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2025
1. J. Lettens et al., “Integration of electrically detected magnetic resonance on a chip (EDMRoC) with charge pumping for low-cost and sensitive defect characterization in silicon carbide metal–oxide–semiconductor field-effect transistors,” Journal of Applied Physics, vol. 137, Art. no. 6, Feb. 2025, doi: 10.1063/5.0245349.
  BibTeX
  @article{Lettens_2025, author = {Lettens, Jan and Avramenko, Marina and Vandevenne, Ilias and Chu, Anh and Hengel, Philipp and Kern, Michal and Anders, Jens and Moens, Peter and Goovaerts, Etienne and Cambré, Sofie}, doi = {10.1063/5.0245349}, issn = {1089-7550}, journal = {Journal of Applied Physics}, month = {02}, number = 6, publisher = {AIP Publishing}, title = {Integration of electrically detected magnetic resonance on a chip (EDMRoC) with charge pumping for low-cost and sensitive defect characterization in silicon carbide metal–oxide–semiconductor field-effect transistors}, url = {http://dx.doi.org/10.1063/5.0245349}, volume = 137, year = 2025 }
  Link
  http://dx.doi.org/10.1063/5.0245349
  DOI
  10.1063/5.0245349
2. H. Lotfi, Q. Yang, T. Elrifai, M. Kern, and J. Anders, “An Energy-Efficient Microwave Magnetic Field Generator for NV Center Quantum Magnetometers Based on an Array of Four Injection-Locked VCOs,” in 2025 9th IEEE Electron Devices Technology & Manufacturing Conference (EDTM), Mar. 2025, pp. 1–3. doi: 10.1109/EDTM61175.2025.11041390.
  - BibTeX
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  BibTeX
  @inproceedings{11041390, abstract = {This paper proposes the use of chip-integrated LC voltage-controlled oscillators (VCOs) as the $B_{1}$ field source in NV diamond-based magnetometers. VCOs provide a compact, energy-efficient solution by directly converting DC power into the microwave $B_{1}$ field required for NV center control, bypassing conventional RF amplification stages. Additionally, the VCO's intrinsic frequency agility, enabled by the varactor inside the LC tank, which simultaneously changes the resonant frequency of the LC resonator and the oscillation frequency, ensures a near-constant $B_{1}$ field across the tuning range. Current state-of-the-art chip-integrated diamond magnetometers, while showing promising results, typically make use of classical transmitter architectures, in general, providing a lower energy efficiency compared to the presented VCO-based approach. With its very good energy efficiency, the proposed VCO-based approach offers a path to scalable, low-power NV-based magnetometers suitable for portable and embedded applications. To provide a sufficiently large active area for typical diamond samples, the presented VCO-based $B_{1}$ generator uses an array of four injection-locked VCOs. An on-chip phase-locked loop (PLL) precisely defines the frequency of the $B_{1}$ field from an external reference. The design is validated using electrical measurements that reflect the key metrics of the target quantum magnetometry application.}, author = {Lotfi, Hadi and Yang, Qing and Elrifai, Tarek and Kern, Michal and Anders, Jens}, booktitle = {2025 9th IEEE Electron Devices Technology & Manufacturing Conference (EDTM)}, doi = {10.1109/EDTM61175.2025.11041390}, month = {03}, pages = {1-3}, title = {An Energy-Efficient Microwave Magnetic Field Generator for NV Center Quantum Magnetometers Based on an Array of Four Injection-Locked VCOs}, year = 2025 }
  DOI
  10.1109/EDTM61175.2025.11041390
3. H. Lotfi, Q. Yang, M. Kern, and J. Anders, “A VCO-based EPR Sensor Featuring a Large 400 µm Coil to Enhance MW B1 Homogeneity and Concentration Sensitivity,” in 2025 IEEE International Symposium on Circuits and Systems (ISCAS), May 2025, pp. 1–5. doi: 10.1109/ISCAS56072.2025.11043483.
  - BibTeX
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  BibTeX
  @inproceedings{11043483, abstract = {We present a voltage-controlled oscillator (VCO)-based electron paramagnetic resonance (EPR) sensor featuring an enhanced sensing area for a high concentration sensitivity and improved homogeneity compared to conventional, chip-integrated planar sensors. Prior designs have relied on VCO-array configurations to expand the sensing area, which comes at the cost of increased power consumption. Here, the relatively small diameters of the individual coil elements limit the homogeneous region in the direction perpendicular to the chip surface. To address these limitations, we propose the use of inductance-capacitance (LC) VCO-based EPR detectors with large coil diameters with a laser-fabricated hole to create a large sensitive volume with high homogeneity of the microwave B1 field inside the coil. Despite the enlarged coil diameter and the correspondingly large inductance, the VCO-based detector achieves a low phase noise (PN) of -116 dBc/Hz at a 1 MHz offset from a center frequency of 6.75 GHz, and a 10 % frequency tuning range. The presented sensor frontend incorporates the VCO-based EPR detector inside an integer-N phase-locked loop (PLL), enabling precise phase and frequency control from an external low-frequency reference. The C-band operation of the presented VCO-based EPR detector is compatible with the static magnetic fields achievable with compact permanent magnets. The proposed sensor is electrically characterized and validated in the target EPR application using standard EPR samples of BDPA (α, γ-bisdiphenylene-β-phenylallyl) and TEM-POL (2,2,6,6-tetramethyl-4-hydroxy-piperidine-1-oxyl), achieving a spin sensitivity of 5 × 109 spins/(G Hz1/2) and concentration sensitivity of 15.6 µM/(G Hz1/2), respectively.}, author = {Lotfi, Hadi and Yang, Qing and Kern, Michal and Anders, Jens}, booktitle = {2025 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS56072.2025.11043483}, issn = {2158-1525}, month = {05}, pages = {1-5}, title = {A VCO-based EPR Sensor Featuring a Large 400 µm Coil to Enhance MW B1 Homogeneity and Concentration Sensitivity}, year = 2025 }
  DOI
  10.1109/ISCAS56072.2025.11043483
4. J. E. McPeak et al., “Operando detection of dissolved oxygen in fluid solution using a submersible rapid scan EPR on a chip dipstick sensor,” Scientific Reports, vol. 15, Art. no. 1, Mar. 2025, doi: 10.1038/s41598-025-93591-4.
  BibTeX
  @article{McPeak2025, abstract = {Electron paramagnetic resonance (EPR) is an accurate and efficient technique to probe unpaired electrons in many applications across materials science, chemistry, and biology. Dynamic processes are investigated using EPR; however, these applications are limited by the use of resonator-based spectrometers such that the entire process must be confined to the resonator. The EPR-on-a-chip (EPRoC) device circumvents this limitation by integrating the entire EPR spectrometer into a single microchip. In this approach, the coil of a voltage-controlled oscillator (VCO) is used as the microwave source and detector simultaneously, operating under a protective coating such that the device may be placed in the sample solution directly. Additionally, improvements in sensitivity via rapid scan EPR (RS-EPR/RS-EPRoC) increase the accessible applications where SNR per measurement time is the fundamental limit. The herein reported device combines a dipstick EPRoC sensor with the enhanced sensitivity of frequency-swept frequency modulated rapid scan to measure triarylmethyl (trityl, Ox071) oxygen-sensitive probes dissolved in aqueous solutions. EPR spectra of Ox071 solutions were recorded using the RS-EPRoC sensor while varying the oxygen concentration of the solution between normal atmosphere and after purging the solution with nitrogen gas. We demonstrate that EPRoC may be employed to monitor dissolved oxygen in fluid solution in an online fashion.}, author = {McPeak, Joseph E. and Segantini, Michele and Marcozzi, Gianluca and Dona, Irene and K{\"u}nstner, Silvio and Chu, Anh and Kern, Michal and Poncelet, Martin and Driesschaert, Benoit and Anders, Jens and Lips, Klaus}, day = 21, doi = {10.1038/s41598-025-93591-4}, issn = {2045-2322}, journal = {Scientific Reports}, month = {03}, number = 1, pages = 9872, title = {Operando detection of dissolved oxygen in fluid solution using a submersible rapid scan EPR on a chip dipstick sensor}, url = {https://doi.org/10.1038/s41598-025-93591-4}, volume = 15, year = 2025 }
  Link
  https://doi.org/10.1038/s41598-025-93591-4
  DOI
  10.1038/s41598-025-93591-4
5. Q. Yang, H. Lotfi, F. Dreyer, M. Kern, B. Blümich, and J. Anders, “A Portable Chip-Based Overhauser DNP Platform for Biomedical Liquid Sample Analysis,” IEEE Transactions on Biomedical Circuits and Systems, vol. 19, Art. no. 2, Apr. 2025, doi: 10.1109/TBCAS.2024.3521033.
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  BibTeX
  @article{10811975, abstract = {Low-field nuclear magnetic resonance (NMR) instruments are an indispensable tool in industrial research and quality control. However, the intrinsically low spin polarization at low magnetic fields severely limits their detection sensitivity and measurement throughput, preventing their widespread use in biomedical analysis. Overhauser dynamic nuclear polarization (ODNP) effectively addresses this problem by transferring the spin polarization from free electrons to protons, significantly enhancing sensitivity. In this paper, we explore the potential of using ODNP for signal enhancement in a custom-designed portable chip-based DNP-enhanced NMR platform, which is centered around a miniaturized microwave (MW) transmitter, a custom-designed NMR-on-a-chip transceiver, and two application-specific ODNP probes. The MW transmitter provides frequency synthesis, signal modulation, and power amplification, providing sufficient output power for efficient polarization transfer. The NMR-on-a-chip transceiver combines a radio frequency (RF) transmitter with a fully differential quadrature receiver, providing pulsed excitation and NMR signal down-conversion and amplification. Two custom-designed ODNP probes are used for proof-of-concept DNP-enhanced NMR relaxometry and spectroscopy measurements. The presented chip-based ODNP platform achieves a maximum MW output power of $34 \textrm{dBm}$, resulting in a signal enhancement of $-162$ using the relaxometry ODNP probe with $1.4 \mu\textrm{L}$ of $10 \textrm{mM}$ non-degassed TEMPOL solution, and an enhancement of $-63$ with the spectroscopy ODNP probe using $50 \textrm{nL}$ of the same solution. The proton polarization was increased from $0.5\times 10^{-6}$ to $81\times 10^{-6}$ at a low field of $0.16 \textrm{T}$. Proof-of-concept measurements on radical-doped tattoo inks and acetic acid verify the potential of our chip-based ODNP platform for the analysis of biologically and medically relevant parameters such as relaxation times, chemical shifts, and hyperfine interactions.}, author = {Yang, Qing and Lotfi, Hadi and Dreyer, Frederik and Kern, Michal and Blümich, Bernhard and Anders, Jens}, doi = {10.1109/TBCAS.2024.3521033}, issn = {1940-9990}, journal = {IEEE Transactions on Biomedical Circuits and Systems}, month = {04}, number = 2, pages = {257-269}, title = {A Portable Chip-Based Overhauser DNP Platform for Biomedical Liquid Sample Analysis}, volume = 19, year = 2025 }
  DOI
  10.1109/TBCAS.2024.3521033
2024
1. A. R. Altenhof, Q. Yang, M. Kern, S. G. Newman, J. Anders, and M. W. Malone, “A high-volume resonator for L-band DNP-NMR,” Journal of Magnetic Resonance, vol. 368, p. 107788, Nov. 2024, doi: 10.1016/j.jmr.2024.107788.
  BibTeX
  @article{Altenhof_2024, author = {Altenhof, Adam R. and Yang, Qing and Kern, Michal and Newman, Shaun G. and Anders, Jens and Malone, Michael W.}, doi = {10.1016/j.jmr.2024.107788}, issn = {1090-7807}, journal = {Journal of Magnetic Resonance}, month = {11}, pages = 107788, publisher = {Elsevier BV}, title = {A high-volume resonator for L-band DNP-NMR}, url = {http://dx.doi.org/10.1016/j.jmr.2024.107788}, volume = 368, year = 2024 }
  Link
  http://dx.doi.org/10.1016/j.jmr.2024.107788
  DOI
  10.1016/j.jmr.2024.107788
2. M. Kern, A. Chu, and J. Anders, “Current Trends in VCO-Based EPR,” Applied Magnetic Resonance, Aug. 2024, doi: 10.1007/s00723-024-01698-0.
  BibTeX
  @article{Kern2024, abstract = {In this article we provide an overview of chip-integrated voltage-controlled oscillator (VCO)-based EPR detection as a new paradigm in EPR sensing. After a brief motivation for this alternative detection method, we provide a self-contained overview of the detection principle, both for continuous-wave and pulsed detection. Based on this introduction, we will highlight the advantages and disadvantages of VCO-based detection compared to conventional resonator-based detection. This is followed by an overview of the current state of the art in VCO-based EPR and interesting emerging applications of the technology. The paper concludes with a brief summary and outlook on future research directions.}, author = {Kern, Michal and Chu, Anh and Anders, Jens}, day = 19, doi = {10.1007/s00723-024-01698-0}, issn = {1613-7507}, journal = {Applied Magnetic Resonance}, month = {08}, title = {Current Trends in VCO-Based EPR}, url = {https://doi.org/10.1007/s00723-024-01698-0}, year = 2024 }
  Link
  https://doi.org/10.1007/s00723-024-01698-0
  DOI
  10.1007/s00723-024-01698-0
3. S. Künstner et al., “Monitoring the state of charge of vanadium redox flow batteries with an EPR-on-a-Chip dipstick sensor,” Phys. Chem. Chem. Phys., vol. 26, Art. no. 25, 2024, doi: 10.1039/D4CP00373J.
  BibTeX
  @article{D4CP00373J, abstract = {The vanadium redox flow battery (VRFB) is considered a promising candidate for large-scale energy storage in the transition from fossil fuels to renewable energy sources. VRFBs store energy by electrochemical reactions of different electroactive species dissolved in electrolyte solutions. The redox couples of VRFBs are VO2+/VO2+ and V2+/V3+{,} the ratio of which to the total vanadium content determines the state of charge (SOC). V(iv) and V(ii) are paramagnetic half-integer spin species detectable and quantifiable with electron paramagnetic resonance spectroscopy (EPR). Common commercial EPR spectrometers{,} however{,} employ microwave cavity resonators which necessitate the use of large electromagnets{,} limiting their application to dedicated laboratories. For an SOC monitoring device for VRFBs{,} a small{,} cost-effective submersible EPR spectrometer{,} preferably with a permanent magnet{,} is desirable. The EPR-on-a-Chip (EPRoC) spectrometer miniaturises the complete EPR spectrometer onto a single microchip by utilising the coil of a voltage-controlled oscillator as both microwave source and detector. It is capable of sweeping the frequency while the magnetic field is held constant enabling the use of small permanent magnets. This drastically reduces the experimental complexity of EPR. Hence{,} the EPRoC fulfils the requirements for an SOC sensor. We{,} therefore{,} evaluate the potential for utilisation of an EPRoC dipstick spectrometer as an operando and continuously online monitor for the SOC of VRFBs. Herein{,} we present quantitative proof-of-principle submersible EPRoC experiments on variably charged vanadium electrolyte solutions. EPR data obtained with a commercial EPR spectrometer are in good agreement with the EPRoC data.}, author = {Künstner, Silvio and McPeak, Joseph E. and Chu, Anh and Kern, Michal and Dinse, Klaus-Peter and Naydenov, Boris and Fischer, Peter and Anders, Jens and Lips, Klaus}, doi = {10.1039/D4CP00373J}, journal = {Phys. Chem. Chem. Phys.}, number = 25, pages = {17785-17795}, publisher = {The Royal Society of Chemistry}, title = {Monitoring the state of charge of vanadium redox flow batteries with an EPR-on-a-Chip dipstick sensor}, url = {http://dx.doi.org/10.1039/D4CP00373J}, volume = 26, year = 2024 }
  Link
  http://dx.doi.org/10.1039/D4CP00373J
  DOI
  10.1039/D4CP00373J
4. S. Künstner et al., “Microwave field mapping for EPR-on-a-chip experiments,” Science Advances, vol. 10, Art. no. 33, 2024, doi: 10.1126/sciadv.ado5467.
  BibTeX
  @article{doi:10.1126/sciadv.ado5467, abstract = {Electron paramagnetic resonance–on-a-chip (EPRoC) devices use small voltage-controlled oscillators (VCOs) for both the excitation and detection of the EPR signal, allowing access to unique sample environments by lifting the restrictions imposed by resonator-based EPR techniques. EPRoC devices have been successfully used at multiple frequencies (7 to 360 gigahertz) and have demonstrated their utility in producing high-resolution spectra in a variety of spin centers. To enable quantitative measurements using EPRoC devices, the spatial distribution of the B1 field produced by the VCOs must be known. As an example, the field distribution of a 12-coil VCO array EPRoC operating at 14 gigahertz is described in this study. The frequency modulation–recorded EPR spectra of a “point”-like and a thin-film sample were investigated while varying the position of both samples in three directions. The results were compared to COMSOL simulations of the B1-field intensity. The EPRoC array sensitive volume was determined to be ~19 nanoliters. Implications for possible EPR applications are discussed. High-resolution spatial mapping of the microwave field enables quantitative EPR on chip measurements.}, author = {Künstner, Silvio and McPeak, Joseph E. and Chu, Anh and Kern, Michal and Wick, Markus and Dinse, Klaus-Peter and Anders, Jens and Naydenov, Boris and Lips, Klaus}, doi = {10.1126/sciadv.ado5467}, eprint = {https://www.science.org/doi/pdf/10.1126/sciadv.ado5467}, journal = {Science Advances}, number = 33, pages = {eado5467}, title = {Microwave field mapping for EPR-on-a-chip experiments}, url = {https://www.science.org/doi/abs/10.1126/sciadv.ado5467}, volume = 10, year = 2024 }
  Link
  https://www.science.org/doi/abs/10.1126/sciadv.ado5467
  DOI
  10.1126/sciadv.ado5467
5. H. Lotfi et al., “An S-band SiGe BiCMOS Transmitter for an NV Center Based Quantum Magnetometer,” in 2024 IEEE International Symposium on Circuits and Systems (ISCAS), May 2024, pp. 1–5. doi: 10.1109/ISCAS58744.2024.10558502.
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  BibTeX
  @inproceedings{10558502, abstract = {The excellent performance of quantum magnetometers based on nitrogen-vacancy (NV) centers in diamond, including their high sensitivity, their wide dynamic range, and the possibility for a calibration-free operation, renders them a very promising alternative to classical magnetic field sensors. However, existing lab prototypes of NV center sensors still suffer from a large volume and non-scalable manufacturing technologies. To mitigate this problem, in this paper, we present a miniaturized and scalable microwave electronics platform for quantum magnetometry based on an S-band SiGe BiCMOS transmitter (TX) chip and a custom-designed resonator manufactured on a microwave printed circuit board. The fabricated TX chip can deliver a high saturated output power of 19dBm at a center frequency of 2.87GHz over a wide relative bandwidth of 38.3% of the center frequency to a 50Ω load while occupying a compact die area of 0.593mm2. To manipulate the spin state of NV centers efficiently, we use two of the presented TX chips to drive a newly proposed differential resonator, which provides microwave magnetic fields of B1=179μT over a large active area of 18.48×104 μm2. Continuous-wave and pulsed optically detected magnetic resonance (ODMR) measurements are used to verify the excellent performance of the proposed platform compared to the state-of-the-art. In these experiments, the presented platform produced Rabi frequencies up to 5.81MHz.}, author = {Lotfi, Hadi and Kern, Michal and Unden, Thomas and Scharpf, Jochen and Schwartz, Ilai and Neumann, Philipp and Anders, Jens}, booktitle = {2024 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS58744.2024.10558502}, issn = {2158-1525}, month = {05}, pages = {1-5}, title = {An S-band SiGe BiCMOS Transmitter for an NV Center Based Quantum Magnetometer}, year = 2024 }
  DOI
  10.1109/ISCAS58744.2024.10558502
6. H. Lotfi et al., “A Four-Channel BiCMOS Transmitter for a Quantum Magnetometer Based on Nitrogen-Vacancy Centers in Diamond,” IEEE Journal of Solid-State Circuits, vol. 59, Art. no. 5, May 2024, doi: 10.1109/JSSC.2024.3350995.
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  BibTeX
  @article{10409187, abstract = {Quantum sensors based on solid-state defects, such as the nitrogen-vacancy (NV) center in diamond, offer very good room-temperature sensitivity, long-term stability, and the potential for calibration-free measurements. However, most quantum sensors still suffer from a bulky size and weight, low energy efficiency, and high costs, prohibiting their widespread use. Here, we present custom-designed chip-integrated microwave (MW) electronics for a miniaturized, low-cost, and highly scalable quantum magnetometer based on NV centers in diamond. The presented electronics include a quadrature phase-locked loop (QPLL) chip to generate the required local oscillator signal at around 7 GHz with a wide tuning range of 22% and a low phase noise (PN) of −122 dBc/Hz at 1-MHz offset from a 7-GHz carrier for broadband low-noise magnetometry. In addition, the magnetometer electronics comprise a 4-channel transmitter chip, which can provide currents up to 412 mApp into a custom-designed inductor over a wide frequency range from 6.4 to 8 GHz. In combination with a custom-designed coil, manufactured on a glass substrate for optical transparency, which features a large active area of ( $\pi { \times } 180 { \times }180~\mu \text {m}^{2}$ ), this current is sufficient to produce strong MW magnetic fields up to $B_{{1}} = (1/2) \cdot B_{\text {ac}} = 170~{\mu \mathrm {T}}$ , enabling pulsed optically detected magnetic resonance (ODMR) experiments. In proof-of-concept ODMR experiments, the presented chip-based spin control system produces fast Rabi oscillations of 5.49 MHz. The measured dc and ac magnetic field limits of detection (LOD) of the presented magnetometer are 32 nT/Hz $^{\text {1/2}}$ and 300 pT/Hz $^{\text {1/2}}$ , respectively.}, author = {Lotfi, Hadi and Kern, Michal and Yang, Qing and Unden, Thomas and Striegler, Nico and Scharpf, Jochen and Schalberger, Patrick and Stöhr, Rainer and Schwartz, Ilai and Neumann, Philipp and Anders, Jens}, doi = {10.1109/JSSC.2024.3350995}, issn = {1558-173X}, journal = {IEEE Journal of Solid-State Circuits}, month = {05}, number = 5, pages = {1421-1432}, title = {A Four-Channel BiCMOS Transmitter for a Quantum Magnetometer Based on Nitrogen-Vacancy Centers in Diamond}, volume = 59, year = 2024 }
  DOI
  10.1109/JSSC.2024.3350995
7. L. Marti et al., “Towards optical MAS magnetic resonance using optical traps,” Journal of Magnetic Resonance Open, vol. 18, p. 100145, 2024, doi: https://doi.org/10.1016/j.jmro.2023.100145.
  BibTeX
  @article{MARTI2024100145, abstract = {Higher magic angle spinning (MAS) frequencies than currently available are desirable to improve spectral resolution in NMR and EPR systems. While conventional strategies employ pneumatic spinning limited by fluid dynamics, this paper demonstrates the development of an optical spinning technique in which vacuum quality dictates the maximum achievable spinning frequency. Using optical traps, we levitated a range of micron-sized samples. Under vacuum we achieved optical rotation of a single ∼10 μm diameter particle of vaterite at several mbar up to hundreds of Hz and of 20 μm diameter SiO2 particles at ≤10−2 mbar at several kHz. At ambient conditions, we optically levitated γ-irradiated alanine particles of 20–50 μm diameter. Additionally, using a single chip EPR detector operating at 11 GHz, we measured the EPR spectrum for a 30 μm γ-irradiated alanine particle in contact with the chip surface (i.e., without optical levitation) in a single scan lasting 92 s. These observations suggest that a γ-irradiated alanine particle having a diameter in the order of 30 μm is a promising candidate for our aim of demonstrating the first magnetic resonance experiment on optically levitated samples. Furthermore, we discuss strategies, limitations, and the potential of implementing MAS with optical traps for NMR and EPR.}, author = {Marti, Lea and {Şahin Solmaz}, Nergiz and Kern, Michal and Chu, Anh and Farsi, Reza and Hengel, Philipp and Gao, Jialiang and Alaniva, Nicholas and Urban, Michael A. and Gunzenhauser, Ronny and Däpp, Alexander and Klose, Daniel and Anders, Jens and Boero, Giovanni and Novotny, Lukas and Frimmer, Martin and Barnes, Alexander B.}, doi = {https://doi.org/10.1016/j.jmro.2023.100145}, issn = {2666-4410}, journal = {Journal of Magnetic Resonance Open}, pages = 100145, title = {Towards optical MAS magnetic resonance using optical traps}, url = {https://www.sciencedirect.com/science/article/pii/S2666441023000535}, volume = 18, year = 2024 }
  Link
  https://www.sciencedirect.com/science/article/pii/S2666441023000535
  DOI
  https://doi.org/10.1016/j.jmro.2023.100145
8. E. Shabratova et al., “Towards an EPR on a Chip Spectrometer for Monitoring Radiation Damage During X-ray Absorption Spectroscopy,” Applied Magnetic Resonance, Sep. 2024, doi: 10.1007/s00723-024-01702-7.
  BibTeX
  @article{Shabratova2024, abstract = {Electron paramagnetic resonance (EPR) spectroscopy is an essential tool to investigate the effects of ionizing radiation, which is routinely administered for reducing contaminations and waste in food products and cosmetics as well as for sterilization in industry and medicine. In materials research, EPR methods are not only employed as a spectroscopic method of structural investigations, but also have been employed for detection of changes in electronic structure due to radiation damage from high energy X-rays, for example, to monitor radical formation inside biomolecules caused by X-ray irradiation at carbon, nitrogen, and oxygen K-edges at synchrotron facilities. Here a compact EPR spectrometer, based on EPR-on-a-chip (EPRoC) sensor and a portable electromagnet, has been developed as a solution for monitoring radiation damage of samples during their investigation by X-ray absorption spectroscopy (XAS) at synchrotron facilities. A portable electromagnet with a soft iron core and forced air temperature stabilization was constructed as the source of the external magnetic field. The sweep range of magnetic field inside the most homogeneous region of the portable electromagnet is 12--290 mT. The compact spectrometer performance was evaluated by placing the EPRoC sensor inside either a commercial electromagnet or the portable electromagnet to record the EPR spectrum of tempol, irradiated alanine, and dilithium phthalocyanine (Li2Pc). The potential performance of the portable spectrometer for the detection of radiation damage in organic compounds and transition metal-containing catalysts during XAS measurements in both fluorescence and transmission modes was calculated with promising implications for measurements after implementation in a synchrotron-based XAS spectrometer.}, author = {Shabratova, Ekaterina and Lotfi, Hadi and Sakr, Ayman and Hassan, Mohamed Atef and Kern, Michal and Neeb, Matthias and Gr{\"u}neberger, Ren{\'e} and Klemke, Bastian and Marcozzi, Gianluca and Kiefer, Klaus and Tsarapkin, Aleksei and H{\"o}flich, Katja and Dittwald, Alina and Denker, Andrea and Anders, Jens and McPeak, Joseph E. and Lips, Klaus}, day = 03, doi = {10.1007/s00723-024-01702-7}, issn = {1613-7507}, journal = {Applied Magnetic Resonance}, month = {09}, title = {Towards an EPR on a Chip Spectrometer for Monitoring Radiation Damage During X-ray Absorption Spectroscopy}, url = {https://doi.org/10.1007/s00723-024-01702-7}, year = 2024 }
  Link
  https://doi.org/10.1007/s00723-024-01702-7
  DOI
  10.1007/s00723-024-01702-7
9. Q. Yang, H. Lotfi, F. Dreyer, M. Kern, and J. Anders, “A Miniaturized Chip-based ODNP Platform,” in 2024 IEEE International Symposium on Circuits and Systems (ISCAS), May 2024, pp. 1–5. doi: 10.1109/ISCAS58744.2024.10558466.
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  BibTeX
  @inproceedings{10558466, abstract = {In this paper, we present a miniaturized chip-based Overhauser dynamic nuclear polarization (ODNP) platform for enhancing detection sensitivity and, thereby, improving the achievable limit of detection. The presented system uses three custom-designed ASICs for the excitation and the detection of the NMR signal as well as the generation and preamplification of the required microwave (MW) signal. A commercial baredie GaN power amplifier is used in addition to achieve the driving strength of up to 26 dBm at 7 GHz required for the target ODNP application. Moreover, the wide bandwidth of the custom-designed, printed MW Alderman-Grant (AG) resonator allows for an indirect measurement of the electron spin resonance (ESR) signal of the utilized DNP agent without the need for an additional ESR spectrometer. Overall, the presented system achieves an ODNP enhancement factor of 50 with an active volume of 500 nL, the latter number improving the state-of-the-art in chip-based ODNP platforms by a factor of 500×.}, author = {Yang, Qing and Lotfi, Hadi and Dreyer, Frederik and Kern, Michal and Anders, Jens}, booktitle = {2024 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS58744.2024.10558466}, issn = {2158-1525}, month = {05}, pages = {1-5}, title = {A Miniaturized Chip-based ODNP Platform}, year = 2024 }
  DOI
  10.1109/ISCAS58744.2024.10558466
10. Q. Yang et al., “A miniaturized dual-mode continuous-wave and pulsed pumping ODNP platform,” Journal of Magnetic Resonance Open, vol. 21, p. 100174, Dec. 2024, doi: 10.1016/j.jmro.2024.100174.
  BibTeX
  @article{Yang_2024, author = {Yang, Qing and Lotfi, Hadi and Kern, Michal and Dreyer, Frederik and Jouda, Mazin and Korvink, Jan. G. and Blümich, Bernhard and Anders, Jens}, doi = {10.1016/j.jmro.2024.100174}, issn = {2666-4410}, journal = {Journal of Magnetic Resonance Open}, month = {12}, pages = 100174, publisher = {Elsevier BV}, title = {A miniaturized dual-mode continuous-wave and pulsed pumping ODNP platform}, url = {http://dx.doi.org/10.1016/j.jmro.2024.100174}, volume = 21, year = 2024 }
  Link
  http://dx.doi.org/10.1016/j.jmro.2024.100174
  DOI
  10.1016/j.jmro.2024.100174
11. Q. Yang et al., “A chip-based C-band ODNP platform,” Journal of Magnetic Resonance, vol. 358, p. 107603, Jan. 2024, doi: 10.1016/j.jmr.2023.107603.
  BibTeX
  @article{Yang_2024, author = {Yang, Qing and Zhao, Jianyu and Dreyer, Frederik and Krüger, Daniel and Chu, Anh and Kern, Michal and Blümich, Bernhard and Anders, Jens}, doi = {10.1016/j.jmr.2023.107603}, issn = {1090-7807}, journal = {Journal of Magnetic Resonance}, month = {01}, pages = 107603, publisher = {Elsevier BV}, title = {A chip-based C-band ODNP platform}, url = {http://dx.doi.org/10.1016/j.jmr.2023.107603}, volume = 358, year = 2024 }
  Link
  http://dx.doi.org/10.1016/j.jmr.2023.107603
  DOI
  10.1016/j.jmr.2023.107603
2023
1. A. Chu, M. Kern, K. Khan, K. LiPS, and J. Anders, “A 263GHz 32-Channel EPR-on-a-Chip Injection-Locked VCO-Array,” in 2023 IEEE International Solid- State Circuits Conference (ISSCC), Feb. 2023, pp. 20–22. doi: 10.1109/ISSCC42615.2023.10067623.
  - BibTeX
  - DOI
  BibTeX
  @inproceedings{10067623, abstract = {Electron paramagnetic resonance (EPR) spectroscopy is a powerful technique that uses the spin of an unpaired electron as a nanoscopic probe inside a molecule to extract information about its chemical structure and composition as well as its surroundings via small changes in its resonance frequency, see Fig. 21.4.1 (left). EPR has applications in studying and monitoring a wide range of materials, starting from defects in semiconductors over free radicals in the blood to metal catalysts in hydrogen fuel production. EPR measurements are typically performed in moderate static magnetic fields around 0.3T, corresponding to EPR frequencies around $9\mathsf{GHz}$. This combination of field and frequency is commonly used due to the relative ease of generation of 0 $3\mathsf{T}$ magnetic fields with sufficient homogeneity as well as the required $9\mathsf{GHz}$ frequency signal. However, access to higher frequencies and fields is strongly desirable due to higher spin polarization (with corresponding increased signal amplitude), higher spectral resolution, which allows, e.g., the determination of electronic and geometric structures of active centers in enzymes, and access to higher energy electronic transitions, such as those found in metal complexes or materials interesting for antiferromagnetic spintronics, explaining the ongoing research towards high-frequency EPR (HFEPR) with operating frequencies beyond $90\mathsf{GHz}$. Here, another strong driver of HFEPR is the field of dynamic nuclear polarization (DNP), a method that can be used to boost the relatively poor sensitivity of nuclear magnetic resonance (NMR) by transferring the intrinsically higher electron polarization to the nuclear spins. Today, there are only a few commercial HFEPR-based DNP spectrometers on the market, with the most popular ones operating at an EPR frequency of $263\mathsf{GHz}(9.4\mathsf{T})$, corresponding to a proton NMR frequency of $400\mathsf{MHz}$. These instruments use gyrotron as the source for the mm-wave magnetic field ($\mathsf{B}_{1}$ field) and cost far beyond 1 million €.}, author = {Chu, Anh and Kern, Michal and Khan, Khubaib and LiPS, Klaus and Anders, Jens}, booktitle = {2023 IEEE International Solid- State Circuits Conference (ISSCC)}, doi = {10.1109/ISSCC42615.2023.10067623}, issn = {2376-8606}, month = {02}, pages = {20-22}, title = {A 263GHz 32-Channel EPR-on-a-Chip Injection-Locked VCO-Array}, year = 2023 }
  DOI
  10.1109/ISSCC42615.2023.10067623
2. F. Dreyer, D. Krüger, S. Baas, A. Velders, and J. Anders, “A 5-780-MHz Transceiver ASIC for Multinuclear NMR Spectroscopy in 0.13-µm BiCMOS,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 70, pp. 3484–3496, Sep. 2023, doi: 10.1109/TCSI.2023.3279495.
  BibTeX
  @article{dreyer20235, author = {Dreyer, Frederik and Kr{\"u}ger, Daniel and Baas, Sander and Velders, Aldrik and Anders, Jens}, doi = {10.1109/TCSI.2023.3279495}, journal = {IEEE Transactions on Circuits and Systems I: Regular Papers}, month = {09}, pages = {3484-3496}, publisher = {IEEE}, title = {A 5-780-MHz Transceiver ASIC for Multinuclear NMR Spectroscopy in 0.13-µm BiCMOS}, url = {https://ieeexplore.ieee.org/document/10143362}, volume = 70, year = 2023 }
  Link
  https://ieeexplore.ieee.org/document/10143362
  DOI
  10.1109/TCSI.2023.3279495
3. F. Dreyer, Q. Yang, B. Alnajjar, D. Krüger, B. Blümich, and J. Anders, “A portable chip-based NMR relaxometry system with arbitrary phase control for point-of-care blood analysis,” IEEE Transactions on Biomedical Circuits and Systems (Early Access), pp. 1–12, 2023, doi: 10.1109/TBCAS.2023.3287281.
  - BibTeX
  - DOI
  BibTeX
  @article{dreyer2023portable, author = {Dreyer, Frederik and Yang, Qing and Alnajjar, Belal and Kr{\"u}ger, Daniel and Bl{\"u}mich, Bernhard and Anders, Jens}, doi = {10.1109/TBCAS.2023.3287281}, journal = {IEEE Transactions on Biomedical Circuits and Systems (Early Access)}, pages = {1-12}, publisher = {IEEE}, title = {A portable chip-based NMR relaxometry system with arbitrary phase control for point-of-care blood analysis}, year = 2023 }
  DOI
  10.1109/TBCAS.2023.3287281
4. M. Kern, T. Klotz, M. Spiess, P. Mavridis, B. Blümich, and J. Anders, “Dead Time-Free Detection of NMR Signals Using Voltage-Controlled Oscillators,” Applied Magnetic Resonance, Aug. 2023, doi: 10.1007/s00723-023-01599-8.
  BibTeX
  @article{Kern2023, abstract = {In this paper, we introduce voltage-controlled oscillators (VCOs) as a new type of nuclear magnetic resonance (NMR) detector, enabling dead time-free detection of NMR signals after an excitation pulse as well as the real-time inductive detection of Rabi oscillations during the pulse. Together with the theory of operation, we present the details of a custom-designed prototype implementation of a VCO-based NMR detector with an operating frequency around 62 MHz. The proof-of-concept measurements obtained with this prototype clearly demonstrate the possibility of performing dead time-free NMR experiments with coherent spin manipulation. Moreover, we also experimentally verified the capability of VCO-based detectors for performing real-time inductive detection of Rabi oscillations during the excitation pulse.}, author = {Kern, Michal and Klotz, Tobias and Spiess, Maximilian and Mavridis, Petros and Bl{\"u}mich, Bernhard and Anders, Jens}, day = 29, doi = {10.1007/s00723-023-01599-8}, issn = {1613-7507}, journal = {Applied Magnetic Resonance}, month = {08}, title = {Dead Time-Free Detection of NMR Signals Using Voltage-Controlled Oscillators}, url = {https://doi.org/10.1007/s00723-023-01599-8}, year = 2023 }
  Link
  https://doi.org/10.1007/s00723-023-01599-8
  DOI
  10.1007/s00723-023-01599-8
5. K. Khan, M. A. Hassan, M. Kern, and J. Anders, “A 12.2 − 14.9 GHz amplitude-sensitive VCO-based EPR-on-a-chip detector achieving a spin sensitivity of 6 × 109 spins/ √ Hz,” in 2023 18th European Microwave Integrated Circuits Conference (EuMIC), IEEE, Sep. 2023. doi: 10.23919/eumic58042.2023.10288693.
  BibTeX
  @inproceedings{Khan_2023, author = {Khan, Khubaib and Hassan, Mohamed Atef and Kern, Michal and Anders, Jens}, booktitle = {2023 18th European Microwave Integrated Circuits Conference (EuMIC)}, doi = {10.23919/eumic58042.2023.10288693}, month = {09}, publisher = {IEEE}, title = {A 12.2 − 14.9 GHz amplitude-sensitive VCO-based EPR-on-a-chip detector achieving a spin sensitivity of 6 × 109 spins/ √ Hz}, url = {http://dx.doi.org/10.23919/EuMIC58042.2023.10288693}, year = 2023 }
  Link
  http://dx.doi.org/10.23919/EuMIC58042.2023.10288693
  DOI
  10.23919/eumic58042.2023.10288693
6. H. Lotfi et al., “A Diamond Quantum Magnetometer Based on a Chip-Integrated 4-way Transmitter in 130-nm SiGe BiCMOS,” in 2023 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Jun. 2023, pp. 253–256. doi: 10.1109/RFIC54547.2023.10186184.
  - BibTeX
  - DOI
  BibTeX
  @inproceedings{10186184, abstract = {Solid-state magnetometers based on color centers in diamond are emerging as one of the leading quantum sensors due to their outstanding room-temperature properties, such as high sensitivity and calibration-free long-term stability. However, their integration into compact systems is still an active area of research. To tackle this challenge, in this paper, we present a quantum magnetometer based on negatively charged nitrogen-vacancy (NV) centers using a custom-designed, chip-integrated 4-way transmitter. In combination with a custom-designed microcoil array, the 4-way transmitter delivers microwave magnetic fields up to 226 µT for carrier frequencies around 7 GHz with a conversion gain of ≥32 dB to NV centers. The local oscillator (LO) signal required to drive the on-chip quadrature upconversion mixer is generated by a custom-designed quadrature PLL, which provides a 22% tuning range between 6.4 and 8 GHz, and a low phase noise of -122 dBc/Hz at 1 MHz offset from a 7 GHz carrier, to enable broadband, low-noise magnetometry. To verify the excellent performance of the integrated electronics, we have embedded them into a widefield diamond magnetometer using off-chip scanning optics, achieving a state-of-the-art AC-magnetic field limit of detection of 300 pT/Hz1/2.}, author = {Lotfi, Hadi and Kern, Michal and Striegler, Nico and Unden, Thomas and Scharpf, Jochen and Schalberger, Patrick and Schwartz, Ilai and Neumann, Philipp and Anders, Jens}, booktitle = {2023 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)}, doi = {10.1109/RFIC54547.2023.10186184}, issn = {2375-0995}, month = {06}, pages = {253-256}, title = {A Diamond Quantum Magnetometer Based on a Chip-Integrated 4-way Transmitter in 130-nm SiGe BiCMOS}, year = 2023 }
  DOI
  10.1109/RFIC54547.2023.10186184
2022
1. A. Buchau and J. Anders, “CHARACTERIZATION OF VECTOR FIELDS BASED ON AN ANALYSIS OF THEIR LOCAL EXPANSIONS,” in WIT Transactions on Engineering Sciences, A. Cheng, Ed., WIT Press, Aug. 2022, pp. 17–29. doi: 10.2495/be450021.
 BibTeX
 @inproceedings{BUCHAU_2022, author = {Buchau, André and Anders, Jens}, booktitle = {WIT Transactions on Engineering Sciences}, doi = {10.2495/be450021}, editor = {Cheng, A.}, month = {08}, pages = {17-29}, publisher = {WIT Press}, title = {CHARACTERIZATION OF VECTOR FIELDS BASED ON AN ANALYSIS OF THEIR LOCAL EXPANSIONS}, url = {https://doi.org/10.2495%2Fbe450021}, volume = 134, year = 2022 }
 Link
 https://doi.org/10.2495%2Fbe450021
 DOI
 10.2495/be450021
2. F. Dreyer, D. Krüger, S. Baas, A. Velders, and J. Anders, “A broadband transceiver ASIC for X-nuclei NMR spectroscopy in 0.13 $\mu$m BiCMOS,” in 2022 20th IEEE Interregional NEWCAS Conference (NEWCAS), IEEE, 2022, pp. 65–69.
 - BibTeX
 BibTeX
 @inproceedings{dreyer2022broadband, author = {Dreyer, Frederik and Kr{\"u}ger, Daniel and Baas, Sander and Velders, Aldrik and Anders, Jens}, booktitle = {2022 20th IEEE Interregional NEWCAS Conference (NEWCAS)}, organization = {IEEE}, pages = {65--69}, title = {A broadband transceiver ASIC for X-nuclei NMR spectroscopy in 0.13 $\mu$m BiCMOS}, year = 2022 }
3. F. Dreyer, D. Krüger, S. Baas, A. Velders, and J. Anders, “A broadband transceiver ASIC for X-nuclei NMR spectroscopy in 0.13 µm BiCMOS,” in 2022 20th IEEE Interregional NEWCAS Conference (NEWCAS), IEEE, 2022, pp. 65–69.
 - BibTeX
 BibTeX
 @inproceedings{dreyer2022broadband, author = {Dreyer, Frederik and Kr{\"u}ger, Daniel and Baas, Sander and Velders, Aldrik and Anders, Jens}, booktitle = {2022 20th IEEE Interregional NEWCAS Conference (NEWCAS)}, organization = {IEEE}, pages = {65--69}, title = {A broadband transceiver ASIC for X-nuclei NMR spectroscopy in 0.13 µm BiCMOS}, year = 2022 }
4. F. Dreyer, Q. Yang, D. Krüger, and J. Anders, “A chip-based NMR relaxometry system for point-of-care analysis,” 2022 IEEE Biomedical Circuits and Systems Conference (BioCAS), pp. 183–187, 2022.
 - BibTeX
 BibTeX
 @article{dreyer2022biocas, author = {Dreyer, Frederik and Yang, Qing and Krüger, Daniel and Anders, Jens}, journal = {2022 IEEE Biomedical Circuits and Systems Conference (BioCAS)}, pages = {183-187}, title = {A chip-based NMR relaxometry system for point-of-care analysis}, year = 2022 }
5. T. Elrifai, A. Sakr, H. Lotfi, M. A. Hassan, K. Lips, and J. Anders, “A 7 GHz VCO-based EPR spectrometer incorporating a UWB data link,” in 2022 20th IEEE Interregional NEWCAS Conference (NEWCAS), Jun. 2022, pp. 280–284. doi: 10.1109/NEWCAS52662.2022.9842254.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9842254, abstract = {This paper presents an electron paramagnetic resonance (EPR) detection system that can wirelessly transmit continuous wave (CW) EPR data over distances up to 30 cm with minimal degradations in SNR. The proposed system comprises a VCO-based EPR-on-a-chip (EPRoC) sensor with a spin sensitivity of $2 \times {10^{12}}\;{\text{spins}}/\sqrt {{\text{Hz}}} $, a 14-bit oversampling ΣΔ-modulator, a 7 GHz bandwidth-tunable ultra-wideband (UWB) transmitter chip, and a custom-designed 2 GHz-bandwidth elliptical dipole antenna. On the receiver side, we directly digitize the antenna signal and recover the EPR signal in the digital domain via a discrete Fourier transform (DFT)-based demodulation scheme. The presented platform is the first wirelessly connected EPR detection system that allows for in-situ EPR experiments using EPRoC detectors under variable operation conditions while enabling direct wireless access to the experimental data. The estimated bit error rate (BER) of the link at a distance of 10 cm from the transmitter is 1×10-7.}, author = {Elrifai, Tarek and Sakr, Ayman and Lotfi, Hadi and Hassan, Mohamed Atef and Lips, Klaus and Anders, Jens}, booktitle = {2022 20th IEEE Interregional NEWCAS Conference (NEWCAS)}, doi = {10.1109/NEWCAS52662.2022.9842254}, month = {06}, pages = {280-284}, title = {A 7 GHz VCO-based EPR spectrometer incorporating a UWB data link}, year = 2022 }
 DOI
 10.1109/NEWCAS52662.2022.9842254
6. H. S. Funk et al., “Composition and magnetic properties of thin films grown by interdiffusion of Mn and Sn-Rich, Ge lattice matched SixGe1-x-ySny layers,” Journal of Magnetism and Magnetic Materials, vol. 546, p. 168731, Mar. 2022, doi: 10.1016/j.jmmm.2021.168731.
 BibTeX
 @article{Funk_2022, author = {Funk, Hannes S. and Kern, Michal and Wei{\ss}haupt, David and Sürgers, Christoph and Fischer, Inga A. and Oehme, Michael and van Slageren, Joris and Schulze, Jörg}, doi = {10.1016/j.jmmm.2021.168731}, journal = {Journal of Magnetism and Magnetic Materials}, month = {03}, pages = 168731, publisher = {Elsevier {BV}}, title = {Composition and magnetic properties of thin films grown by interdiffusion of Mn and Sn-Rich, Ge lattice matched {SixGe}1-x-{ySny} layers}, url = {https://doi.org/10.1016%2Fj.jmmm.2021.168731}, volume = 546, year = 2022 }
 Link
 https://doi.org/10.1016%2Fj.jmmm.2021.168731
 DOI
 10.1016/j.jmmm.2021.168731
7. M. A. Hassan et al., “Towards single-cell pulsed EPR using VCO-based EPR-on-a-chip detectors,” Frequenz, vol. 76, Art. no. 11–12, 2022, doi: doi:10.1515/freq-2022-0096.
 BibTeX
 @article{HassanKernChuKalraShabratovaTsarapkinMacKinnonLipsTeutloffBittlKorvinkAnders+2022+699+717, author = {Hassan, Mohamed Atef and Kern, Michal and Chu, Anh and Kalra, Gatik and Shabratova, Ekaterina and Tsarapkin, Aleksei and MacKinnon, Neil and Lips, Klaus and Teutloff, Christian and Bittl, Robert and Korvink, Jan Gerrit and Anders, Jens}, doi = {doi:10.1515/freq-2022-0096}, journal = {Frequenz}, number = {11-12}, pages = {699--717}, title = {Towards single-cell pulsed EPR using VCO-based EPR-on-a-chip detectors}, url = {https://doi.org/10.1515/freq-2022-0096}, volume = 76, year = 2022 }
 Link
 https://doi.org/10.1515/freq-2022-0096
 DOI
 doi:10.1515/freq-2022-0096
8. K. Khan et al., “A 12.2 to 14.9 GHz injection-locked VCO array with an on-chip 50 MHz BW semi-digital PLL for transient spin manipulation and detection,” in 2022 IEEE 65th International Midwest Symposium on Circuits and Systems (MWSCAS), Aug. 2022, pp. 1–4. doi: 10.1109/MWSCAS54063.2022.9859288.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9859288, abstract = {We present an injection-locked 12.2 to 14.9 GHz VCO array with an on-chip large bandwidth semi-digital PLL for the real-time manipulation and detection of electron spins. With its large bandwidth of 50 MHz, the on-chip PLL allows for the precise control of the phase of the electron spins from an external reference. Moreover, we demonstrate experimentally that the spin signal can be measured with high sensitivity outside the PLL loop bandwidth by FM demodulation of the frequency-divided VCO output signal. The system was manufactured in 40nm bulk CMOS technology and its versatility and performance are verified in continuous-wave, rapid scan, and pulsed EPR experiments. In these experiments, it achieves a competitive spin sensitivity of $6 \times 10^{10}$ spins/$\surd {Hz}$ over a large sensitive volume of 180 nl. Moreover, the presented system, for the first time, allowed for the real-time inductive detection of Rabi oscillations as well as an intrinsically dead-time-free detection of free induction decays (FIDs) after an excitation pulse.}, author = {Khan, Khubaib and Hassan, Mohamed Atef and Kern, Michal and Lips, Klaus and Schwartz, Ilai and Plenio, Martin and Jelezko, Fedor and Anders, Jens}, booktitle = {2022 IEEE 65th International Midwest Symposium on Circuits and Systems (MWSCAS)}, doi = {10.1109/MWSCAS54063.2022.9859288}, issn = {1558-3899}, month = {08}, pages = {1-4}, title = {A 12.2 to 14.9 GHz injection-locked VCO array with an on-chip 50 MHz BW semi-digital PLL for transient spin manipulation and detection}, year = 2022 }
 DOI
 10.1109/MWSCAS54063.2022.9859288
9. H. Lotfi, M. A. Hassan, M. Kern, and J. Anders, “A Compact C-band EPR-on-a-chip Transceiver in 130-nm SiGe BiCMOS,” in 2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME), Jun. 2022, pp. 157–160. doi: 10.1109/PRIME55000.2022.9816822.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9816822, abstract = {We present a chip-integrated C-band transceiver for electron paramagnetic resonance (EPR) spectroscopy, implemented in a 130-nm SiGe BiCMOS technology. The presented EPR-on-a-chip transceiver displays an excellent minimum in-band noise Figure of 0.82 dB and a peak in-band output power $P_{\mathrm{sat}}$ of 9.8 dBm. Furthermore, the presented chip provides a wide operating frequency range from 6 GHz to 8 GHz, which is crucial for detecting wideband EPR signals. The receiver and two-stage four-way combined power amplifier provide (conversion) gains of 32.8 dB and 13 dB, respectively. In proof-of-concept EPR measurements using an off-chip PCB coil as a detector and the standard EPR sample BDPA ($\alpha,\gamma$-bisdiphenylene-$\beta$-phenylallyl), the presented chip achieves a competitive spin sensitivity of $8\times 10^{10}$ spins/$\sqrt{\mathrm{Hz}}$ over an active volume of 31 n1.}, author = {Lotfi, Hadi and Hassan, Mohamed Atef and Kern, Michal and Anders, Jens}, booktitle = {2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)}, doi = {10.1109/PRIME55000.2022.9816822}, month = {06}, pages = {157-160}, title = {A Compact C-band EPR-on-a-chip Transceiver in 130-nm SiGe BiCMOS}, year = 2022 }
 DOI
 10.1109/PRIME55000.2022.9816822
10. A. Mohamed, L. Baumgärtner, J. Zhao, D. Djekic, and J. Anders, “A current-mode Σ∆ modulator with FIR feedback and DC servo loop for an improved dynamic range,” in 2022 IEEE International Symposium on Circuits and Systems (ISCAS), 2022, pp. 1–5.
 - BibTeX
 BibTeX
 @inproceedings{mohamed2022currentmode, abstract = {In this paper, we present a continuous-time current-mode Σ∆ modulator (CT C-SDM) with finite impulse response (FIR) feedback to increase clock jitter robustness while preserving the anti-aliasing filtering (AAF) property of a CT modulator. The modulator also features a newly proposed DC servo loop (DSL) that extends the modulator’s dynamic range in applications with a large DC bias current. This improvement breaks the intrinsic tradeoff between dynamic range and quantization noise floor of C-SDM for applications which require the digitization of AC currents in the presence of strong DC bias currents. Moreover, a resistive-steering DAC is proposed that allows for larger sampling frequencies than conventional resistive DACs while, at the same time, achieving lower noise floors compared to current-steering DACs. The proposed modulator architecture has been manufactured in 180 nm CMOS, and consumes 64 mW from a 3.3 V supply. The chip’s measured peak SNR and SNDR are 77 dB and 76.8 dB, respectively. The modulator can accommodate AC signal currents up to 137 µApp and features an integrated noise of 6.9 nArms over a 200 kHz bandwidth, corresponding to a noise floor of 15 pA/√Hz. An off-chip implementation of the proposed DSL verifies its positive effect on the modulator’s dynamic range (DR) without deteriorating the modulator’s noise performance and/or stability properties.}, author = {Mohamed, A. and Baumgärtner, L. and Zhao, J. and Djekic, D. and Anders, J.}, booktitle = {2022 IEEE International Symposium on Circuits and Systems (ISCAS)}, pages = {1-5}, title = {A current-mode Σ∆ modulator with FIR feedback and DC servo loop for an improved dynamic range}, year = 2022 }
11. A. Mohamed, M. Wagner, H. Heidari, and J. Anders, “A frontend for magnetoresistive sensors with a 2.2 pA/√Hz low-noise current source,” IEEE Solid-State Circuits Letters, p. 1, 2022, doi: 10.1109/LSSC.2022.3148362.
 BibTeX
 @article{9701597, abstract = {In this letter, we present an integrated readout chip for magnetoresistive (MR) sensors consisting of a readout chain that comprises a DC-coupled fully differential difference amplifier (FDDA) followed by a programmable gain amplifier (PGA), as well as a low-noise current biasing scheme for the MR sensor. The current bias scheme features a 10-bit digital-to-analog converter (DAC) to compensate for process variations of the MR sensing element as well as to calibrate for variations in the DC bias field of the sensor. The bias current source achieves a very low current noise floor of 2.2pA/√Hz for bias currents up to 1mA. The readout chip is manufactured in 180nm SOI CMOS and consumes a total power of 38mW. The paper is an extended version of 1, incorporating additional modeling details and measurement results.}, author = {Mohamed, A. and Wagner, M. and Heidari, H. and Anders, J.}, doi = {10.1109/LSSC.2022.3148362}, issn = {2573-9603}, journal = {IEEE Solid-State Circuits Letters}, pages = {1-1}, title = {A frontend for magnetoresistive sensors with a 2.2 pA/√Hz low-noise current source}, url = {https://ieeexplore.ieee.org/document/9701597}, year = 2022 }
 Link
 https://ieeexplore.ieee.org/document/9701597
 DOI
 10.1109/LSSC.2022.3148362
12. A. Mohamed and J. Anders, “An ultra-low-noise frontend for magnetoresistive sensors,” EUROPRACTICE activity report 2021 - 2022, pp. 48–49, Mar. 2022, [Online]. Available: https://europractice-ic.com/wp-content/uploads/2022/03/europractice_ar2021_web_150dpi.pdf
 - BibTeX
 - Link
 BibTeX
 @article{mohamedultralownoise, author = {Mohamed, Ayman and Anders, Jens}, journal = {EUROPRACTICE activity report 2021 - 2022}, month = {03}, pages = {48-49}, title = {An ultra-low-noise frontend for magnetoresistive sensors}, url = {https://europractice-ic.com/wp-content/uploads/2022/03/europractice_ar2021_web_150dpi.pdf}, year = 2022 }
 Link
 https://europractice-ic.com/wp-content/uploads/2022/03/europractice_ar2021_web_150dpi.pdf
13. A. Sakr, M. A. Hassan, K. Khan, M. Kern, and J. Anders, “A distributed amplitude control loop for VCO-array-based EPR-on-a-chip detectors,” in 2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME), Jun. 2022, pp. 13–16. doi: 10.1109/PRIME55000.2022.9816840.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9816840, abstract = {This paper presents an amplitude control loop (ACL) for VCO-array-based electron paramagnetic resonance (EPR) detectors. The proposed ACL enhances the microwave magnetic field (B<inf>1</inf>) stability over the whole VCO frequency sweep range, against different sample environments and at varying experimental conditions. By introducing a distributed amplitude detection scheme, the proposed ACL implementation can regulate B<inf>1</inf> field intensities in injection-locked VCO arrays with reduced loading effects and minimal phase noise degradation. Extracted-level circuit simulations on an example VCO array implementation demonstrate the functionality and excellent achievable performance of the proposed approach.}, author = {Sakr, Ayman and Hassan, Mohamed Atef and Khan, Khubaib and Kern, Michal and Anders, Jens}, booktitle = {2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)}, doi = {10.1109/PRIME55000.2022.9816840}, month = {06}, pages = {13-16}, title = {A distributed amplitude control loop for VCO-array-based EPR-on-a-chip detectors}, year = 2022 }
 DOI
 10.1109/PRIME55000.2022.9816840
14. Q. Yang, J. Zhao, F. Dreyer, D. Krüger, and J. Anders, “A portable NMR platform with arbitrary phase control and temperature compensation,” Magnetic Resonance, vol. 3, Art. no. 1, 2022.
 - BibTeX
 BibTeX
 @article{yang2022portable, author = {Yang, Qing and Zhao, Jianyu and Dreyer, Frederik and Kr{\"u}ger, Daniel and Anders, Jens}, journal = {Magnetic Resonance}, number = 1, pages = {77--90}, publisher = {Copernicus GmbH}, title = {A portable NMR platform with arbitrary phase control and temperature compensation}, volume = 3, year = 2022 }
15. Q. Yang, J. Zhao, F. Dreyer, D. Krüger, and J. Anders, “A CMOS-based NMR platform with arbitrary phase control and temperature compensation,” Magnetic Resonance, vol. 3, Art. no. 1, 2022, doi: 10.5194/mr-3-77-2022.
 BibTeX
 @article{yang2022cmos, author = {Yang, Qing and Zhao, Jianyu and Dreyer, Frederik and Krüger, Daniel and Anders, Jens}, doi = {10.5194/mr-3-77-2022}, journal = {Magnetic Resonance}, number = 1, pages = {77-90}, publisher = {Copernicus GmbH}, title = {A CMOS-based NMR platform with arbitrary phase control and temperature compensation}, url = {https://mr.copernicus.org/articles/3/77/2022/}, volume = 3, year = 2022 }
 Link
 https://mr.copernicus.org/articles/3/77/2022/
 DOI
 10.5194/mr-3-77-2022
16. J. Zhao, Q. Yang, F. Dreyer, D. Krüger, F. Jelezko, and J. Anders, “A Broadband NMR Magnetometer System with Field Searching and Automatic Tuning Function,” IEEE Transactions on Instrumentation and Measurement, 2022, doi: 10.1109/TIM.2022.3222484.
 - BibTeX
 - DOI
 BibTeX
 @article{zhao2022, author = {Zhao, Jianyu and Yang, Qing and Dreyer, Frederik and Krüger, Daniel and Jelezko, Fedor and Anders, Jens}, doi = {10.1109/TIM.2022.3222484}, journal = {IEEE Transactions on Instrumentation and Measurement}, title = {A Broadband NMR Magnetometer System with Field Searching and Automatic Tuning Function}, year = 2022 }
 DOI
 10.1109/TIM.2022.3222484
2021
1. J. Abella et al., “Security, Reliability and Test Aspects of the RISC-V Ecosystem,” in 2021 IEEE European Test Symposium (ETS), May 2021, pp. 1–10. doi: 10.1109/ETS50041.2021.9465449.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9465449, abstract = {RISC-V has emerged as a viable solution on academia and industry. However, to use open source hardware for safety-critical applications, we need a deep understanding of the way in which well established mechanisms for testing and reliability could be integrated and deployed on the RISC-V ecosystem, and we need a clear knowledge on how such an ecosystem can be leveraged to improve security. This paper includes four contributions presenting the potential of RISC-V in security research, the way in which RISC-V can be hardened against power analysis attacks, how to implement, using RISC-V, software and hardware/software solutions for dual core lock step, and how to perform system-level testing in the RISC-V ecosystem.}, author = {Abella, Jaume and Alcaide, Sergi and Anders, Jens and Bas, Francisco and Becker, Steffen and De Mulder, Elke and Elhamawy, Nourhan and Gürkaynak, Frank K. and Handschuh, Helena and Hernandez, Carles and Hutter, Mike and Kosmidis, Leonidas and Polian, Ilia and Sauer, Matthias and Wagner, Stefan and Regazzoni, Francesco}, booktitle = {2021 IEEE European Test Symposium (ETS)}, doi = {10.1109/ETS50041.2021.9465449}, issn = {1558-1780}, month = {05}, pages = {1-10}, title = {Security, Reliability and Test Aspects of the RISC-V Ecosystem}, year = 2021 }
 DOI
 10.1109/ETS50041.2021.9465449
2. B. M. K. Alnajjar, A. Buchau, L. Baumgärtner, and J. Anders, “NMR magnets for portable applications using 3D printed materials,” vol. 326, p. 106934, May 2021, doi: 10.1016/j.jmr.2021.106934.
 BibTeX
 @article{2021, author = {Alnajjar, Belal M.K. and Buchau, Andr{\'{e}} and Baumgärtner, Lars and Anders, Jens}, doi = {10.1016/j.jmr.2021.106934}, month = {05}, pages = 106934, publisher = {Elsevier {BV}}, title = {{NMR} magnets for portable applications using 3D printed materials}, url = {https://doi.org/10.1016%2Fj.jmr.2021.106934}, volume = 326, year = 2021 }
 Link
 https://doi.org/10.1016%2Fj.jmr.2021.106934
 DOI
 10.1016/j.jmr.2021.106934
3. B. M. K. Alnajjar, A. Buchau, L. Baumgártner, and J. Anders, “NMR magnets for portable applications using 3D printed materials,” Journal of Magnetic Resonance, p. 106934, Feb. 2021, doi: 10.1016/j.jmr.2021.106934.
 BibTeX
 @article{alnajjar2021magnets, author = {Alnajjar, Belal M.K. and Buchau, Andr{\'{e}} and Baumg{\'{a}}rtner, Lars and Anders, Jens}, doi = {10.1016/j.jmr.2021.106934}, journal = {Journal of Magnetic Resonance}, month = {02}, pages = 106934, publisher = {Elsevier {BV}}, title = {{NMR} magnets for portable applications using 3D printed materials}, url = {https://doi.org/10.1016%2Fj.jmr.2021.106934}, year = 2021 }
 Link
 https://doi.org/10.1016%2Fj.jmr.2021.106934
 DOI
 10.1016/j.jmr.2021.106934
4. J. Anders, “spins-to-go – Miniaturisierte magnetresonanzspektrometer Die Kernspinresonanzspektroskopie,” 2021, doi: 10.26125/HTFF-4J02.
 BibTeX
 @article{https://doi.org/10.26125/htff-4j02, author = {Anders, Jens}, doi = {10.26125/HTFF-4J02}, language = {de}, publisher = {Deutsche Bunsen-Gesellschaft für physikalische Chemie e.V.}, title = {spins-to-go – Miniaturisierte magnetresonanzspektrometer Die Kernspinresonanzspektroskopie}, url = {https://bunsen.de/bmo/spins-to-go}, year = 2021 }
 Link
 https://bunsen.de/bmo/spins-to-go
 DOI
 10.26125/HTFF-4J02
5. J. Anders, F. Dreyer, D. Krüger, I. Schwartz, M. B. Plenio, and F. Jelezko, “Progress in miniaturization and low-field nuclear magnetic resonance,” Journal of Magnetic Resonance, vol. 322, p. 106860, 2021, doi: 10.1016/j.jmr.2020.106860.
 BibTeX
 @article{anders322progress, author = {Anders, Jens and Dreyer, Frederik and Kr{\"u}ger, Daniel and Schwartz, Ilai and Plenio, Martin B and Jelezko, Fedor}, doi = {10.1016/j.jmr.2020.106860}, journal = {Journal of Magnetic Resonance}, pages = 106860, publisher = {Elsevier}, title = {Progress in miniaturization and low-field nuclear magnetic resonance}, url = {https://www.sciencedirect.com/science/article/pii/S1090780720301786}, volume = 322, year = 2021 }
 Link
 https://www.sciencedirect.com/science/article/pii/S1090780720301786
 DOI
 10.1016/j.jmr.2020.106860
6. J. Anders, F. Dreyer, D. Krüger, I. Schwartz, M. B. Plenio, and F. Jelezko, “Progress in miniaturization and low-field nuclear magnetic resonance,” vol. 322, p. 106860, Jan. 2021, doi: 10.1016/j.jmr.2020.106860.
 BibTeX
 @article{2021, author = {Anders, Jens and Dreyer, Frederik and Krüger, Daniel and Schwartz, Ilai and Plenio, Martin B. and Jelezko, Fedor}, doi = {10.1016/j.jmr.2020.106860}, month = {01}, pages = 106860, publisher = {Elsevier {BV}}, title = {Progress in miniaturization and low-field nuclear magnetic resonance}, url = {https://doi.org/10.1016%2Fj.jmr.2020.106860}, volume = 322, year = 2021 }
 Link
 https://doi.org/10.1016%2Fj.jmr.2020.106860
 DOI
 10.1016/j.jmr.2020.106860
7. B. Blümich and J. Anders, “When the MOUSE leaves the house,” vol. 2, Art. no. 1, Apr. 2021, doi: 10.5194/mr-2-149-2021.
 BibTeX
 @article{2021, author = {Blümich, Bernhard and Anders, Jens}, doi = {10.5194/mr-2-149-2021}, month = {04}, number = 1, pages = {149--160}, publisher = {Copernicus {GmbH}}, title = {When the {MOUSE} leaves the house}, url = {https://doi.org/10.5194%2Fmr-2-149-2021}, volume = 2, year = 2021 }
 Link
 https://doi.org/10.5194%2Fmr-2-149-2021
 DOI
 10.5194/mr-2-149-2021
8. A. Buchau, “ACCURACY ANALYSIS OF THE FAST MULTIPOLE METHOD FOR THREE-DIMENSIONAL BOUNDARY VALUE PROBLEMS BASED ON LAPLACE’S EQUATION,” in WIT Transactions on Engineering Sciences, A. H.-D. Cheng, Ed., WIT Press, Aug. 2021, pp. 3–15. doi: 10.2495/be440011.
 BibTeX
 @inproceedings{2021, author = {Buchau, André}, booktitle = {WIT Transactions on Engineering Sciences}, doi = {10.2495/be440011}, editor = {Cheng, A. H-D}, issn = {1743-3533}, month = {08}, pages = {3-15}, publisher = {{WIT} Press}, title = {{ACCURACY} {ANALYSIS} {OF} {THE} {FAST} {MULTIPOLE} {METHOD} {FOR} {THREE}-{DIMENSIONAL} {BOUNDARY} {VALUE} {PROBLEMS} {BASED} {ON} {LAPLACE}'S {EQUATION}}, url = {https://doi.org/10.2495%2Fbe440011}, volume = 131, year = 2021 }
 Link
 https://doi.org/10.2495%2Fbe440011
 DOI
 10.2495/be440011
9. H. Bürkle, T. Klotz, R. Krapf, and J. Anders, “A 0.1 MHz to 200 MHz high-voltage CMOS transceiver for portable NMR systems with a maximum output current of 2.0 A<inf>pp</inf>,” in ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC), Sep. 2021, pp. 327–330. doi: 10.1109/ESSCIRC53450.2021.9567823.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9567823, abstract = {This paper presents a single-chip high-voltage transceiver ASIC for low-field NMR spectroscopy. The chip integrates an adjustable high-voltage (HV) H-bridge power amplifier (PA) with a PLL frequency synthesizer and a quadrature low intermediate frequency (low-IF) receiver, achieving a measured input-referred voltage noise density of 1.1 nV / ✓Hz. The operating frequency of the chip is from 0.1 MHz to 200 MHz, supporting all relevant Larmor frequencies for low-field mobile and portable NMR. The PA consists of four isolated 50 V NMOS transistors, isolated gate drivers with a digitally adjustable deadtime control, high-frequency level shifters, and a TX-control logic that supports bootstrapping of the integrated high-side drivers. The output current can be defined by an adjustable voltage supply from 0 V to 50 V, delivering a maximum current of 2.0 App into a non-tuned 3 mm NMR coil and up to 8.3 App into a parallel tuned NMR coil. Inside a custom-designed 1.1 T portable NMR magnet, the system achieves a spin sensitivity of 1.1 × 1016spins/ ✓Hz and a concentration sensitivity of 1mM/✓Hz.}, author = {Bürkle, Heiko and Klotz, Tobias and Krapf, Reiner and Anders, Jens}, booktitle = {ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC)}, doi = {10.1109/ESSCIRC53450.2021.9567823}, month = {09}, pages = {327-330}, title = {A 0.1 MHz to 200 MHz high-voltage CMOS transceiver for portable NMR systems with a maximum output current of 2.0 A<inf>pp</inf>}, year = 2021 }
 DOI
 10.1109/ESSCIRC53450.2021.9567823
10. Y. Chae, Y.-S. Shu, J. Anders, V. Schaffer, T. Oshima, and M. Corsi, “F2: Pushing the Frontiers in Accuracy for Data Converters and Analog Circuits,” in 2021 IEEE International Solid- State Circuits Conference (ISSCC), Feb. 2021, pp. 517–519. doi: 10.1109/ISSCC42613.2021.9365818.
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 BibTeX
 @inproceedings{9365818, abstract = {Summary form only given, as follows. The complete presentation was not made available for publication as part of the conference proceedings. The advances in high-precision analog front-end and data conversion circuits have opened up new opportunities in diverse application spaces. To keep fueling the evolution of emerging applications, such as health monitoring, industry 4.0, and internet of things, advanced sensing technology is required to further improve resolution, speed, as well as power and area efficiency of the system. This forum highlights the fundamental challenges with an emphasis on techniques to achieve the ultimate accuracy in analog circuits and data converters. Following an overview of analog-circuit challenges, a series of discussions start with essential high-accuracy voltage and frequency references along with the compensation techniques for their long-term drift, and then move on to the system-level functions of high-precision amplifiers, digital-to-analog converters, as well as overasampling and Nyquist-rate analog-to-digital converters, which are required to construct the overall signal chain.}, author = {Chae, Youngcheol and Shu, Yun-Shiang and Anders, Jens and Schaffer, Viola and Oshima, Takashi and Corsi, Marco}, booktitle = {2021 IEEE International Solid- State Circuits Conference (ISSCC)}, doi = {10.1109/ISSCC42613.2021.9365818}, issn = {2376-8606}, month = {02}, pages = {517-519}, title = {F2: Pushing the Frontiers in Accuracy for Data Converters and Analog Circuits}, volume = 64, year = 2021 }
 DOI
 10.1109/ISSCC42613.2021.9365818
11. A. Chu et al., “On the modeling of amplitude-sensitive electron spin resonance (ESR) detection using voltage-controlled oscillator (VCO)-based ESR-on-a-chip detectors,” Magnetic Resonance, vol. 2, Art. no. 2, Sep. 2021, doi: 10.5194/mr-2-699-2021.
 BibTeX
 @article{2021, author = {Chu, Anh and Schlecker, Benedikt and Kern, Michal and Goodsell, Justin L. and Angerhofer, Alexander and Lips, Klaus and Anders, Jens}, doi = {10.5194/mr-2-699-2021}, journal = {Magnetic Resonance}, month = {09}, number = 2, pages = {699--713}, publisher = {Copernicus {GmbH}}, title = {On the modeling of amplitude-sensitive electron spin resonance ({ESR}) detection using voltage-controlled oscillator ({VCO})-based {ESR}-on-a-chip detectors}, url = {https://doi.org/10.5194%2Fmr-2-699-2021}, volume = 2, year = 2021 }
 Link
 https://doi.org/10.5194%2Fmr-2-699-2021
 DOI
 10.5194/mr-2-699-2021
12. D. Djekic, M. Häberle, A. Mohamed, L. Baumgärtner, and J. Anders, “A 440-kOhm to 150-GOhm Tunable Transimpedance Amplifier Based on Multi-Element Pseudo-Resistors,” in ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC), Sep. 2021, pp. 1–4.
 - BibTeX
 BibTeX
 @inproceedings{djekic2021440kohm, abstract = {We present a widely tunable transimpedance amplifier (TIA) with a dc servo loop and an optional bandwidth extension. All resistors are implemented as multi-element pseudo-resistors, which feature high linearity, robustness against process and temperature, and a very wide tuning range of more than five decades. The TIA features a noise floor of 0.6fA/sqrt(Hz) at its maximum transimpedance of 150GOhm and a bandwidth of 2.9MHz at its minimum transimpedance of 440kOhm. A subsequent inverting amplifier stage provides an optional pole-zero compensation to extend the TIA's overall bandwidth. An additional dc servo loop can be used to compensate large dc currents. }, author = {{Djekic}, D. and {Häberle}, M. and {Mohamed}, A. and {Baumgärtner}, L. and {Anders}, J.}, booktitle = {ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC)}, month = {09}, pages = {1-4}, title = {A 440-kOhm to 150-GOhm Tunable Transimpedance Amplifier Based on Multi-Element Pseudo-Resistors}, year = 2021 }
13. F. Dreyer, D. Krüger, and J. Anders, “Breitbandiger Transceiver ASIC für heteronukleare NMR Spektroskopie,” in MikroSystemTechnik Kongress 2021, VDE Verlag, 2021, pp. 258–261.
 - BibTeX
 BibTeX
 @inproceedings{dreyer2021broadband, author = {Dreyer, Frederik and Kr\"{u}ger, Daniel and Anders, Jens}, booktitle = {MikroSystemTechnik Kongress 2021}, isbn = {978-3-8007-5656-8}, organization = {VDE GMM}, pages = {258-261}, publisher = {VDE Verlag}, title = {Breitbandiger Transceiver ASIC für heteronukleare NMR Spektroskopie}, year = 2021 }
14. M. Elsobky, A. Mohamed, T. Deuble, J. Anders, and J. Burghartz, “A 12-to-15 b, 100-to-25 kS/s Resolution Reconfigurable, Power Scalable Incremental ADC using Ultra-Thin Chips,” IEEE Sensors Letters, p. 1, 2021, doi: 10.1109/LSENS.2021.3051259.
 BibTeX
 @article{9321383, abstract = {Resolution reconfigurable Nyquist-rate analog-to-digital converters (ADCs) are able to deliver an optimized end-to-end power efficiency when a single ADC is time-multiplexed between different sensors. In this paper, a 12-to-15b resolution reconfigurable power scalable Nyquist-rate incremental ΔΣ (I-ΔΣ) ADC, operating at sampling rates from100kS/s to 25kS/s, is proposed. A widely reconfigurable dynamic range (DR) (73-92dB) with fine selection granularity is achieved by incorporating a scalable first integrator and optimally setting the oversampling ratio (OSR) of the ΔΣ modulator. A 2.5x power reduction is measured for the proposed technique in comparison to a pure OSR-based resolution scaling. A Walden figure-of-merit (FoMW) of 880 fJ/conv.-step and Schreier (FoMS) of 160.3dB are measured in the 14b mode. The I-ΔΣ ADC is fabricated in a 180nm CMOS technology and consumes 0.48mW and 0.93mW from a supply voltage of 3V at the 12b and 15b modes, respectively. By exploiting the back-thinning of the ADC chips, the presented 30-μm thick ADC becomes readily available for integration into hybrid flexible sensor systems.}, author = {{Elsobky}, M. and {Mohamed}, A. and {Deuble}, T. and {Anders}, J. and {Burghartz}, J.}, doi = {10.1109/LSENS.2021.3051259}, journal = {IEEE Sensors Letters}, pages = {1-1}, title = {A 12-to-15 b, 100-to-25 kS/s Resolution Reconfigurable, Power Scalable Incremental ADC using Ultra-Thin Chips}, url = {https://ieeexplore.ieee.org/document/9321383}, year = 2021 }
 Link
 https://ieeexplore.ieee.org/document/9321383
 DOI
 10.1109/LSENS.2021.3051259
15. A. V. Funes et al., “Single Molecule Magnet Features in the Butterfly CoIII2LnIII2 Pivalate Family with Alcohol-Amine Ligands,” European Journal of Inorganic Chemistry, vol. 2021, Art. no. 31, 2021, doi: https://doi.org/10.1002/ejic.202100467.
 BibTeX
 @article{https://doi.org/10.1002/ejic.202100467, abstract = {Abstract We are reporting the synthesis and structural characterization of a new family of butterfly complexes with formula [Co2IIILn2III−(μ3−(OR))2] where −OR is an alcohol-amine type ligand, in this case N-methyldiethanolamine (H2mdea) with Ln=Tb, Dy, Ho, Er and Yb. This new family adds to the previously reported one, where the alcohol-amine ligand is triethanolamine (H3tea), and allows a one-to-one comparison between them. From a combined experimental study, that included DC and AC magnetometry as well as HF-EPR measurements, and a theoretical approach based on Broken-Symmetry DFT and CASSCF-SA-SOC ab-initio computations, we discuss the single molecule magnet (SMM) performance in these complexes. We focus in a few key structural parameters that correlate with the magnetization relaxation behaviour observed along the different explored lanthanide ions.}, author = {Funes, Alejandro V. and Perfetti, Mauro and Kern, Michal and Rußegger, Nadine and Carrella, Luca and Rentschler, Eva and van Slageren, Joris and Alborés, Pablo}, doi = {https://doi.org/10.1002/ejic.202100467}, eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/ejic.202100467}, journal = {European Journal of Inorganic Chemistry}, number = 31, pages = {3191-3210}, title = {Single Molecule Magnet Features in the Butterfly [CoIII2LnIII2] Pivalate Family with Alcohol-Amine Ligands}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/ejic.202100467}, volume = 2021, year = 2021 }
 Link
 https://onlinelibrary.wiley.com/doi/abs/10.1002/ejic.202100467
 DOI
 https://doi.org/10.1002/ejic.202100467
16. M. A. Hassan, T. Elrifai, A. Sakr, M. Kern, K. Lips, and J. Anders, “A 14-channel 7 GHz VCO-based EPR-on-a-chip sensor with rapid scan capabilities,” in 2021 IEEE Sensors, Oct. 2021, pp. 1–4. doi: 10.1109/SENSORS47087.2021.9639513.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9639513, abstract = {This paper presents a VCO-based EPR-on-a-chip (EPRoC) sensor for portable, battery-operated electron paramagnetic resonance (EPR) spectrometers. The proposed chip contains an array of 14 injection-locked VCOs as the sensing element for an improved sensitive volume and phase noise performance. By cointegrating a high-bandwidth PLL, the presented design allows for continuous-wave and rapid-scan EPR experiments with a minimum number of external components. The active loop filter introduces an assisted replica charge pump that mitigates the slewing requirements on the loop-filter amplifier. The measured spin sensitivity of 2×109 spins/$\sqrt {{\text{Hz}}} $ together with the large active volume of 210 nl lead to an 8-fold improvement in concentration sensitivity compared to the state-of-the-art in EPRoC detectors.}, author = {Hassan, Mohamed Atef and Elrifai, Tarek and Sakr, Ayman and Kern, Michal and Lips, Klaus and Anders, Jens}, booktitle = {2021 IEEE Sensors}, doi = {10.1109/SENSORS47087.2021.9639513}, issn = {2168-9229}, month = {10}, pages = {1-4}, title = {A 14-channel 7 GHz VCO-based EPR-on-a-chip sensor with rapid scan capabilities}, year = 2021 }
 DOI
 10.1109/SENSORS47087.2021.9639513
17. D. Krüger, F. Dreyer, M. Kern, and J. Anders, “An S-band EPR-on-a-chip Receiver in 0.13 µm BiCMOS,” in 2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), Nov. 2021, pp. 1–5. doi: 10.1109/ICECS53924.2021.9665504.
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 - DOI
 BibTeX
 @inproceedings{9665504, abstract = {In this paper, we present a chip-integrated receiver for electron paramagnetic resonance (EPR), designed for operation in the S-band (2-4 GHz). This EPR-on-a-chip receiver consists of a low-noise amplifier, followed by quadrature downconversion mixers and intermediate-frequency variable gain amplifiers. It also incorporates a frequency generation block. The chip is realized in a <tex>$0.13-\mu \mathrm{m}$</tex> SiGe BiCMOS technology and occupies an area of <tex>$1100 \times 900\ \mu \mathrm{m}^{2}$</tex>. The receiver's measured input-referred voltage noise density within the band of interest is <tex>$720 \text{pV}/\sqrt{\text{Hz}}$</tex>. Proof-of-concept EPR measurements validate the proposed approach.}, author = {Krüger, Daniel and Dreyer, Frederik and Kern, Michal and Anders, Jens}, booktitle = {2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS)}, doi = {10.1109/ICECS53924.2021.9665504}, month = {11}, pages = {1-5}, title = {An S-band EPR-on-a-chip Receiver in 0.13 µm BiCMOS}, year = 2021 }
 DOI
 10.1109/ICECS53924.2021.9665504
18. D. Krüger, F. Dreyer, M. Kern, and J. Anders, “An S-band EPR-on-a-chip Receiver in 0.13 μm BiCMOS,” in 2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), IEEE, Nov. 2021, pp. 1–5. doi: 10.1109/ICECS53924.2021.9665504.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9665504, abstract = {We present a chip-integrated receiver for electron paramagnetic resonance (EPR), designed for operation in the S-band (2-4 GHz). This EPR-on-a-chip receiver consists of a low-noise amplifier, followed by quadrature downconversion mixers and intermediate-frequency variable gain amplifiers. It also incorporates a frequency generation block. The chip is realized in a $0.13-\mu \mathrm{m}$ SiGe BiCMOS technology and occupies an area of $1100 \times 900\ \mu \mathrm{m}^{2}$. The receiver's measured input-referred voltage noise density within the band of interest is $720 \text{pV}/\sqrt{\text{Hz}}$. Proof-of-concept EPR measurements validate the proposed approach.}, author = {Krüger, Daniel and Dreyer, Frederik and Kern, Michal and Anders, Jens}, booktitle = {2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS)}, doi = {10.1109/ICECS53924.2021.9665504}, month = {11}, pages = {1-5}, publisher = {IEEE}, title = {An S-band EPR-on-a-chip Receiver in 0.13 μm BiCMOS}, year = 2021 }
 DOI
 10.1109/ICECS53924.2021.9665504
19. D. Krüger, F. Dreyer, M. Kern, and J. Anders, “An S-band EPR-on-a-chip Receiver in <tex>$0.13\,\mum$</tex> BiCMOS,” in 2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), Nov. 2021, pp. 1–5. doi: 10.1109/ICECS53924.2021.9665504.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9665504, abstract = {In this paper, we present a chip-integrated receiver for electron paramagnetic resonance (EPR), designed for operation in the S-band (2-4 GHz). This EPR-on-a-chip receiver consists of a low-noise amplifier, followed by quadrature downconversion mixers and intermediate-frequency variable gain amplifiers. It also incorporates a frequency generation block. The chip is realized in a <tex>$0.13-\mu \mathrm{m}$</tex> SiGe BiCMOS technology and occupies an area of <tex>$1100 \times 900\ \mu \mathrm{m}^{2}$</tex>. The receiver's measured input-referred voltage noise density within the band of interest is <tex>$720 \text{pV}/\sqrt{\text{Hz}}$</tex>. Proof-of-concept EPR measurements validate the proposed approach.}, author = {Krüger, Daniel and Dreyer, Frederik and Kern, Michal and Anders, Jens}, booktitle = {2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS)}, doi = {10.1109/ICECS53924.2021.9665504}, month = {11}, pages = {1-5}, title = {An S-band EPR-on-a-chip Receiver in <tex>$0.13\,\mu\mathrm{m}$</tex> BiCMOS}, year = 2021 }
 DOI
 10.1109/ICECS53924.2021.9665504
20. S. Künstner et al., “Rapid-scan electron paramagnetic resonance using an EPR-on-a-Chip sensor,” vol. 2, Art. no. 2, Aug. 2021, doi: 10.5194/mr-2-673-2021.
 BibTeX
 @article{2021, author = {Künstner, Silvio and Chu, Anh and Dinse, Klaus-Peter and Schnegg, Alexander and McPeak, Joseph E. and Naydenov, Boris and Anders, Jens and Lips, Klaus}, doi = {10.5194/mr-2-673-2021}, month = {08}, number = 2, pages = {673--687}, publisher = {Copernicus {GmbH}}, title = {Rapid-scan electron paramagnetic resonance using an {EPR}-on-a-Chip sensor}, url = {https://doi.org/10.5194%2Fmr-2-673-2021}, volume = 2, year = 2021 }
 Link
 https://doi.org/10.5194%2Fmr-2-673-2021
 DOI
 10.5194/mr-2-673-2021
21. S. M. Leitao et al., “Time-resolved scanning ion conductance microscopy for three-dimensional tracking of nanoscale cell surface dynamics,” bioRxiv, 2021, doi: 10.1101/2021.05.13.444009.
 BibTeX
 @article{Leitao2021.05.13.444009, abstract = {Nanocharacterization plays a vital role in understanding the complex nanoscale organization of cells and organelles. Understanding cellular function requires high-resolution information about how the cellular structures evolve over time. A number of techniques exist to resolve static nanoscale structure of cells in great detail (super-resolution optical microscopy1, EM2, AFM3). However, time-resolved imaging techniques tend to either have lower resolution, are limited to small areas, or cause damage to the cells thereby preventing long-term time-lapse studies. Scanning probe microscopy methods such as atomic force microscopy (AFM) combine high-resolution imaging with the ability to image living cells in physiological conditions. The mechanical contact between the tip and the sample, however, deforms the cell surface, disturbs the native state, and prohibits long-term time-lapse imaging. Here, we develop a scanning ion conductance microscope (SICM) for high-speed and long-term nanoscale imaging. By utilizing recent advances in nanopositioning4, nanopore fabrication5, microelectronics6, and controls engineering7 we developed a microscopy method that can resolve spatiotemporally diverse three-dimenional processes on the cell membrane at sub-5nm axial resolution. We tracked dynamic changes in live cell morphology with nanometer details and temporal ranges of sub-second to days, imagining diverse processes ranging from endocytosis, micropinocytosis, and mitosis, to bacterial infection and cell differentiation in cancer cells. This technique enables a detailed look at membrane events and may offer insights into cell-cell interactions for infection, immunology, and cancer research.Competing Interest StatementThe authors have declared no competing interest.}, author = {Leitao, Samuel M. and Drake, Barney and Pinjusic, Katarina and Pierrat, Xavier and Navikas, Vytautas and Nievergelt, Adrian P. and Brillard, Charl{\`e}ne and Djekic, Denis and Radenovic, Aleksandra and Persat, Alex and Constam, Daniel B. and Anders, Jens and Fantner, Georg E.}, doi = {10.1101/2021.05.13.444009}, elocation-id = {2021.05.13.444009}, eprint = {https://www.biorxiv.org/content/early/2021/05/15/2021.05.13.444009.full.pdf}, journal = {bioRxiv}, publisher = {Cold Spring Harbor Laboratory}, title = {Time-resolved scanning ion conductance microscopy for three-dimensional tracking of nanoscale cell surface dynamics}, url = {https://www.biorxiv.org/content/early/2021/05/15/2021.05.13.444009}, year = 2021 }
 Link
 https://www.biorxiv.org/content/early/2021/05/15/2021.05.13.444009
 DOI
 10.1101/2021.05.13.444009
22. A. Mohamed, D. Djekic, L. Baumgärtner, and J. Anders, “Noise-aware design methodology of ultra-low-noise transimpedance amplifiers,” in ICECS 2021 - 28th IEEE International Conference on Electronics Circuits and Systems (ICECS), Nov. 2021, pp. 1–4.
 - BibTeX
 BibTeX
 @inproceedings{mohamed2021noiseaware, abstract = {In this paper, we present a detailed analysis of the noise performance of transimpedance amplifiers (TIAs) to enable the design of ultra-low-noise current sensing frontends. While prior research on TIA noise focused on the thermal noise of the differential pair, here, we explicitly include the flicker noise of all noise-critical transistors. Using our analysis, we show that flicker noise of the input differential pair can be a primary noise source under many practically relevant circumstances. Moreover, based on this extended analysis, we propose a complete design methodology for ultra-low-noise TIAs. To this end, we derive analytical noise equations that help to interpret and optimize the noise behavior of a TIA before performing detailed transistor-level simulations. The presented analytical model achieves high accuracy by including BSIM4 parameters of the target technology. The proposed model and design approach are verified by an example design of an ultra-low-noise TIA in a 180nm CMOS SOI technology.}, author = {{Mohamed}, A. and {Djekic}, D. and {Baumgärtner}, L. and {Anders}, J.}, booktitle = {ICECS 2021 - 28th IEEE International Conference on Electronics Circuits and Systems (ICECS)}, month = {11}, pages = {1-4}, title = {Noise-aware design methodology of ultra-low-noise transimpedance amplifiers}, year = 2021 }
23. A. Mohamed, H. Heidari, and J. Anders, “A readout circuit for tunnel magnetoresistive sensors employing an ultra-low-noise current source,” in ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC), Sep. 2021.
 - BibTeX
 BibTeX
 @inproceedings{mohamed2021readout, abstract = {We present a tunneling magnetoresistive (TMR) sensing microsystem consisting of a low flicker noise TMR sensor and a custom integrated readout frontend. The proposed sensor readout circuit introduces a novel ultra-low-noise current biasing scheme for the TMR sensor, which achieves a very low current noise floor of 2.2 pA/sqrt(Hz) for a 1mA biasing current. The TMR output voltage is processed by a differential readout scheme to improve the baseline-to-signal ratio. The microsystem also features an on chip 10-bit current DAC that allows compensating for the large process variations in the TMR base resistance value. The readout chip is manufactured in a 180nm SOI CMOS technology and heterogeneously integrated with the TMR sensor. The readout chain provides a thermal noise floor of 4 nV/sqrt(Hz), while, together with the biasing scheme, consuming a total power of 38mW. The complete sensor system consisting of the TMR and the readout circuit provides a state-of-the-art magnetic field noise floor of 120 pT/sqrt(Hz).}, author = {{Mohamed}, A. and {Heidari}, H. and {Anders}, J.}, booktitle = {ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC)}, month = {09}, title = {A readout circuit for tunnel magnetoresistive sensors employing an ultra-low-noise current source}, year = 2021 }
24. A. Sakr, M. A. Hassan, and J. Anders, “A 93.1-dB SFDR, 90.3-dB DR, and 1-MS/s CT Incremental Sigma-Delta Modulator Incorporating a Resistive Dual-RTZ FIR DAC,” in ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC), Sep. 2021, pp. 211–214. doi: 10.1109/ESSCIRC53450.2021.9567762.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9567762, abstract = {This paper presents a high-bandwidth, high-resolution continuous-time incremental ΣΔ-modulator employing a 6-tap finite impulse response (FIR) feedback digital-to-analog converter (DAC) for improved clock jitter immunity. Resetting the FIR filter internal states in the incremental mode introduces initial transient overshoots, which can cause instability at high input amplitudes. To solve this problem, we propose the use of a purely resistive feedthrough path from the overall input to the second integrator input. This additional path alleviates the large transient swings associated with the incremental operation and extends the modulator's dynamic range (DR). Furthermore, we introduce a novel implementation of a fully differential dual return-to-zero (RTZ) resistive FIR DAC that eliminates inter-symbol interference (ISI) signal-dependent errors and, thereby, improves modulator linearity. The presented design is fabricated in a 180-nm SOI CMOS technology and achieves a DR of 90.3 dB and a peak spurious-free DR of 93.1 dB at a Nyquist conversion rate of 1 MS/s. The power dissipated from a 1.8-V power supply is 8.06 mW, resulting in a Schreier FoM of 168.3 dB.}, author = {Sakr, Ayman and Hassan, Mohamed Atef and Anders, Jens}, booktitle = {ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC)}, doi = {10.1109/ESSCIRC53450.2021.9567762}, month = {09}, pages = {211-214}, title = {A 93.1-dB SFDR, 90.3-dB DR, and 1-MS/s CT Incremental Sigma-Delta Modulator Incorporating a Resistive Dual-RTZ FIR DAC}, year = 2021 }
 DOI
 10.1109/ESSCIRC53450.2021.9567762
25. L. Tesi et al., “Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High-Frequency Electron Paramagnetic Resonance,” Small Methods, p. 2100376, Jul. 2021, doi: 10.1002/smtd.202100376.
 BibTeX
 @article{Tesi_2021, author = {Tesi, Lorenzo and Bloos, Dominik and Hrto{\v{n}}, Martin and Bene{\v{s}}, Adam and Hentschel, Mario and Kern, Michal and Leavesley, Alisa and Hillenbrand, Rainer and K{\v{r}}{\'{a}}pek, Vlastimil and {\v{S}}ikola, Tom{\'{a}}{\v{s}} and Slageren, Joris}, doi = {10.1002/smtd.202100376}, journal = {Small Methods}, month = {07}, pages = 2100376, publisher = {Wiley}, title = {Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High-Frequency Electron Paramagnetic Resonance}, url = {https://doi.org/10.1002%2Fsmtd.202100376}, year = 2021 }
 Link
 https://doi.org/10.1002%2Fsmtd.202100376
 DOI
 10.1002/smtd.202100376
26. D. Weißhaupt et al., “Weak localization and weak antilocalization in doped Ge 1- y Sn y layers with up to 8% Sn,” Journal of Physics: Condensed Matter, vol. 33, Art. no. 8, 2021, doi: 10.1088/1361-648X/abcb68.
 BibTeX
 @article{weisshaupt2021localization, abstract = {Low-temperature magnetoresistance measurements of n- and p-doped germanium–tin (Ge1-ySny) layers with Sn concentrations up to 8% show contributions arising from effects of weak localization for n-type and weak antilocalization for p-type doped samples independent of the Sn concentration. Calculations of the magnetoresistance using the Hikami–Larkin–Nagaoka model for two-dimensional transport allow us to extract the phase-coherence length for all samples as well as the spin–orbit length for the p-type doped samples. For pure Ge, we find phase-coherence lengths as long as (349.0 ± 1.4) nm and (614.0 ± 0.9) nm for n-type and p-type doped samples, respectively. The phase-coherence length decreases with increasing Sn concentration. From the spin–orbit scattering length, we determine the spin-diffusion scattering length in the range of 20–30 nm for all highly degenerate p-type doped samples irrespective of Sn concentration. These results show that Ge1-ySny is a promising material for future spintronic applications.}, author = {Weißhaupt, David and Funk, Hannes Simon and Kern, Michal and Dettling, Marco M. and Schwarz, Daniel and Oehme, Michael and Sürgers, Christoph and van Slageren, Joris and Fischer, Inga Anita and Schulze, Jörg}, doi = {10.1088/1361-648X/abcb68}, journal = {Journal of Physics: Condensed Matter}, number = 8, pages = 085703, title = {Weak localization and weak antilocalization in doped Ge 1- y Sn y layers with up to 8% Sn}, url = {https://iopscience.iop.org/article/10.1088/1361-648X/abcb68}, volume = 33, year = 2021 }
 Link
 https://iopscience.iop.org/article/10.1088/1361-648X/abcb68
 DOI
 10.1088/1361-648X/abcb68
2020
1. J. Anders, F. Dreyer, and D. Krüger, “On-Chip Nuclear Magnetic Resonance,” in Handbook of Biochips: Integrated Circuits and Systems for Biology and Medicine, M. Sawan, Ed., New York, NY: Springer New York, 2020, pp. 1–32. doi: 10.1007/978-1-4614-6623-9_23-1.
 BibTeX
 @inbook{Anders2020, abstract = {Nuclear magnetic resonance (NMR) is one of the prime modalities for probing molecular structure in the biomedical context and analyzing bulk material properties for quality control, food product analysis, and nondestructive testing. Conventional state-of-the-art NMR spectroscopy systems utilize bulky superconducting magnets, have a room-filling size, and cost millions of euros. Over the past decade, advances in permanent magnet technology have led to the availability of benchtop NMR spectrometers and even smaller NMR relaxometers for analyzing bulk material properties and performing immunoassays. With the availability of these smaller NMR magnets, NMR electronics have entered the focus of attention as a key component for miniaturized, portable NMR devices. Here, the on-chip NMR approach, in which all required electronics are realized on a single integrated circuit, allows for a realization in an ultra-small form factor and offers great promise for reducing the overall system cost. In this chapter, a comprehensive and self-contained overview of the on-chip NMR approach in the biomedical context will be given. After an introduction into the topic, the physical origin of the NMR signal will be discussed together with means of exciting and detecting it. This is followed by a review of conventional NMR electronics, including its key performance metrics. In the main part of this chapter, the NMR-on-a-chip approach is introduced, and its advantages and disadvantages are highlighted. Finally, the chapter is concluded with a summary and an outlook on the possibility of enhancing the achievable performance of the NMR-on-a-chip approach with on-chip dynamic nuclear polarization (DNP) capabilities.}, address = {New York, NY}, author = {Anders, Jens and Dreyer, Frederik and Kr{\"u}ger, Daniel}, booktitle = {Handbook of Biochips: Integrated Circuits and Systems for Biology and Medicine}, doi = {10.1007/978-1-4614-6623-9_23-1}, editor = {Sawan, Mohamad}, isbn = {978-1-4614-6623-9}, pages = {1--32}, publisher = {Springer New York}, title = {On-Chip Nuclear Magnetic Resonance}, url = {https://doi.org/10.1007/978-1-4614-6623-9_23-1}, year = 2020 }
 Link
 https://doi.org/10.1007/978-1-4614-6623-9_23-1
 DOI
 10.1007/978-1-4614-6623-9_23-1
2. M. Brunet Cabré, D. Djekic, T. Romano, N. Hanna, J. Anders, and K. McKelvey, “Microscale Electrochemical Cell on a Custom CMOS Transimpedance Amplifier for High Temporal Resolution Single Entity Electrochemistry**,” ChemElectroChem, vol. 7, Art. no. 23, 2020, doi: https://doi.org/10.1002/celc.202001083.
 BibTeX
 @article{https://doi.org/10.1002/celc.202001083, abstract = {Abstract Stochastic collision electrochemistry requires high-resolution and high-bandwidth current amplification due to the low magnitude and short duration of the current signals. However, increasing the current amplifier bandwidth leads to increased current noise levels, which in turn obscures the current signal generated from stochastic collision electrochemistry experiments. The key to minimizing current noise is an experimental configuration that minimizes the input capacitance to the current amplifier. Here, we report a new strategy to minimize the input capacitance to a current amplifier by using a movable microscale electrochemical cell, formed at the end of a micropipette using a scanning electrochemical cell microscopy approach, to conduct electrochemical experiments in close proximity (∼300 μm) to a transimpedance amplifier. We demonstrated this via electro-oxidation of single Ag nanoparticles detected at a bandwidth of 1 MHz.}, author = {Brunet Cabré, Marc and Djekic, Denis and Romano, Timothée and Hanna, Nadim and Anders, Jens and McKelvey, Kim}, doi = {https://doi.org/10.1002/celc.202001083}, eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/celc.202001083}, journal = {ChemElectroChem}, number = 23, pages = {4724-4729}, title = {Microscale Electrochemical Cell on a Custom CMOS Transimpedance Amplifier for High Temporal Resolution Single Entity Electrochemistry**}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/celc.202001083}, volume = 7, year = 2020 }
 Link
 https://onlinelibrary.wiley.com/doi/abs/10.1002/celc.202001083
 DOI
 https://doi.org/10.1002/celc.202001083
3. M. Brunet Cabré, D. Djekic, T. Romano, N. Hanna, J. Anders, and K. McKelvey, “Cover Feature: Microscale Electrochemical Cell on a Custom CMOS Transimpedance Amplifier for High Temporal Resolution Single Entity Electrochemistry (ChemElectroChem 23/2020),” ChemElectroChem, vol. 7, Art. no. 23, 2020, doi: https://doi.org/10.1002/celc.202001360.
 BibTeX
 @article{https://doi.org/10.1002/celc.202001360, abstract = {The Cover Feature shows high bandwidth single entity electrochemistry. More information can be found in the Article by M. Brunet Cabré et al.}, author = {Brunet Cabré, Marc and Djekic, Denis and Romano, Timothée and Hanna, Nadim and Anders, Jens and McKelvey, Kim}, doi = {https://doi.org/10.1002/celc.202001360}, eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/celc.202001360}, journal = {ChemElectroChem}, number = 23, pages = {4692-4692}, title = {Cover Feature: Microscale Electrochemical Cell on a Custom CMOS Transimpedance Amplifier for High Temporal Resolution Single Entity Electrochemistry (ChemElectroChem 23/2020)}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/celc.202001360}, volume = 7, year = 2020 }
 Link
 https://onlinelibrary.wiley.com/doi/abs/10.1002/celc.202001360
 DOI
 https://doi.org/10.1002/celc.202001360
4. H. Bürkle, K. Schmid, T. Klotz, R. Krapf, and J. Anders, “A High Voltage CMOS Transceiver for Low-Field NMR with a Maximum Output Current of 1.4 App,” in 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Oct. 2020, pp. 1–5. doi: 10.1109/ISCAS45731.2020.9181025.
 BibTeX
 @inproceedings{9181025, abstract = {In this paper, we present a fully integrated transceiver ASIC for low field NMR spectroscopy. The chip integrates a conventional low intermediate frequency (low-IF) receiver together with a high-voltage (HV) H-bridge power amplifier (PA) and a PLL frequency synthesizer. The receiver consists of a low noise amplifier (LNA), a quadrature down-conversion mixer and a baseband amplifier. It achieves a measured input-referred voltage noise density of 1.1 nV/√Hz;. The integrated PLL frequency synthesizer supports operating frequencies between 4 MHz and 100 MHz, covering all relevant Larmor frequencies of benchtop and portable NMR. The on-chip PA can drive up to 1.4 App into a 1Ω resistor and 1.6 App into a 3mm, parallel-tuned NMR coil. When operating with a 3mm NMR coil inside a 1.45T unshimmed NMR magnet, the system achieves a spin sensitivity of 9.2 × 1015 spins/√Hz and a concentration sensitivity of 1.79 mM/√Hz.}, author = {{Bürkle}, H. and {Schmid}, K. and {Klotz}, T. and {Krapf}, R. and {Anders}, J.}, booktitle = {2020 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS45731.2020.9181025}, issn = {2158-1525}, month = {10}, pages = {1-5}, title = {A High Voltage CMOS Transceiver for Low-Field NMR with a Maximum Output Current of 1.4 App}, url = {https://ieeexplore.ieee.org/document/9181025/}, year = 2020 }
 Link
 https://ieeexplore.ieee.org/document/9181025/
 DOI
 10.1109/ISCAS45731.2020.9181025
5. H. Bürkle, K. Schmid, T. Klotz, R. Krapf, and J. Anders, “A High Voltage CMOS Transceiver for Low-Field NMR with a Maximum Output Current of 1.4 A<inf>pp</inf>,” in 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Oct. 2020, pp. 1–5. doi: 10.1109/ISCAS45731.2020.9181025.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9181025, abstract = {In this paper, we present a fully integrated transceiver ASIC for low field NMR spectroscopy. The chip integrates a conventional low intermediate frequency (low-IF) receiver together with a high-voltage (HV) H-bridge power amplifier (PA) and a PLL frequency synthesizer. The receiver consists of a low noise amplifier (LNA), a quadrature down-conversion mixer and a baseband amplifier. It achieves a measured input-referred voltage noise density of 1.1 nV/√Hz;. The integrated PLL frequency synthesizer supports operating frequencies between 4 MHz and 100 MHz, covering all relevant Larmor frequencies of benchtop and portable NMR. The on-chip PA can drive up to 1.4 App into a 1Ω resistor and 1.6 App into a 3mm, parallel-tuned NMR coil. When operating with a 3mm NMR coil inside a 1.45T unshimmed NMR magnet, the system achieves a spin sensitivity of 9.2 × 1015 spins/√Hz and a concentration sensitivity of 1.79 mM/√Hz.}, author = {Bürkle, Heiko and Schmid, Kevin and Klotz, Tobias and Krapf, Reiner and Anders, Jens}, booktitle = {2020 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS45731.2020.9181025}, issn = {2158-1525}, month = {10}, pages = {1-5}, title = {A High Voltage CMOS Transceiver for Low-Field NMR with a Maximum Output Current of 1.4 A<inf>pp</inf>}, year = 2020 }
 DOI
 10.1109/ISCAS45731.2020.9181025
6. M. Eder et al., “A Signal Acquisition Setup for Ultrashort Echo Time Imaging Operating in Parallel on Unmodified Clinical MRI Scanners Achieving an Acquisition Delay of $3~\mus$,” IEEE Transactions on Medical Imaging, vol. 39, Art. no. 1, Jan. 2020, doi: 10.1109/TMI.2019.2924057.
 BibTeX
 @article{8742612, abstract = {Ultrashort echo time imaging on clinical systems is still limited by the rather long radio frequency switching times achievable with standard front end concepts. In this contribution, an independent parallel receive-only system is interfaced to an unmodified clinical MRI system, enabling imaging of species with ultrashort relaxation times, such as bone, tendon, teeth, or lung tissue. Synchronization of the system is achieved by an electronically decoupled one-way trigger line, a clock reference signal, and RF pulse tracking, thus ensuring minimal interference with the host system. With the proposed system, an acquisition delay of ${3}~{\mu \text {s}}$ is experimentally demonstrated.}, author = {{Eder}, M. and {Horneff}, A. and {Paul}, J. and {Storm}, A. and {Wunderlich}, A. and {Hell}, E. and {Ulrici}, J. and {Anders}, J. and {Rasche}, V.}, doi = {10.1109/TMI.2019.2924057}, issn = {1558-254X}, journal = {IEEE Transactions on Medical Imaging}, month = {01}, number = 1, pages = {218-225}, title = {A Signal Acquisition Setup for Ultrashort Echo Time Imaging Operating in Parallel on Unmodified Clinical MRI Scanners Achieving an Acquisition Delay of $\text{3}~{\mu}\text{s}$ }, url = {https://ieeexplore.ieee.org/document/8742612/}, volume = 39, year = 2020 }
 Link
 https://ieeexplore.ieee.org/document/8742612/
 DOI
 10.1109/TMI.2019.2924057
7. L. Gohlke, F. Dreyer, M. P. Álvarez, and J. Anders, “An IoT based low-cost heart rate measurement system employing PPG sensors,” in 2020 IEEE SENSORS, Oct. 2020, pp. 1–4. doi: 10.1109/SENSORS47125.2020.9278844.
 - BibTeX
 - DOI
 BibTeX
 @inproceedings{9278844, abstract = {In this paper, we present a low-cost system for heart rate measurements. The device is easily usable without medical knowledge or training, and it works without prior calibration. The sensor mainly targets for health monitoring people in rural areas of emerging countries, who do not have easy access to medical examinations. While there are already many devices on the market that can perform heart rate and blood pressure measurements, the focus of the presented work is on reducing the cost while maintaining sufficient accuracy and providing online access to the measured data for medical personnel. The presented prototype uses commercial PPG sensors and can measure heart rates between 30bpm and 200bpm with an absolute accuracy of ±10bpm. The total cost of the prototype is below 30USD.}, author = {Gohlke, Lena and Dreyer, Frederik and Álvarez, Monica Pimiento and Anders, Jens}, booktitle = {2020 IEEE SENSORS}, doi = {10.1109/SENSORS47125.2020.9278844}, issn = {2168-9229}, month = {10}, pages = {1-4}, title = {An IoT based low-cost heart rate measurement system employing PPG sensors}, year = 2020 }
 DOI
 10.1109/SENSORS47125.2020.9278844
8. L. Gohlke, F. Dreyer, M. P. Alvarez, and J. Anders, “An IoT based low-cost heart rate measurement system employing PPG sensors,” in 2020 IEEE Sensors, IEEE, 2020, pp. 1–4. doi: 10.1109/SENSORS47125.2020.9278844.
 BibTeX
 @inproceedings{gohlke2020iot, author = {Gohlke, Lena and Dreyer, Frederik and Alvarez, Monica Pimiento and Anders, Jens}, booktitle = {2020 IEEE Sensors}, doi = {10.1109/SENSORS47125.2020.9278844}, organization = {IEEE}, pages = {1--4}, title = {An IoT based low-cost heart rate measurement system employing PPG sensors}, url = {https://ieeexplore.ieee.org/abstract/document/9278844}, year = 2020 }
 Link
 https://ieeexplore.ieee.org/abstract/document/9278844
 DOI
 10.1109/SENSORS47125.2020.9278844
9. M. Kern et al., “Hybrid Spintronic Materials from Conducting Polymers with Molecular Quantum Bits,” Advanced Functional Materials, 2020, doi: 10.1002/adfm.202006882.
 BibTeX
 @article{noauthororeditor, abstract = {Hybrid materials consisting of organic semiconductors and molecular quantum bits promise to provide a novel platform for quantum spintronic applications. However, investigations of such materials, elucidating both the electrical and quantum dynamical properties of the same material have never been reported. Here the preparation of hybrid materials consisting of conducting polymers and molecular quantum bits is reported. Organic field-effect transistor measurements demonstrate that the favorable electrical properties are preserved in the presence of the qubits. Chemical doping introduces charge carriers into the material, and variable-temperature charge transport measurements reveal the existence of mobile charge carriers at temperatures as low as 15 K. Importantly, quantum coherence of the qubit is shown to be preserved up to temperatures of at least 30 K, that is, in the presence of mobile charge carriers. These results pave the way for employing such hybrid materials in novel molecular quantum spintronic architectures.}, author = {Kern, Michal and Tesi, Lorenzo and Neusser, David and Rußegger, Nadine and Winkler, Mario and Allgaier, Alexander and Gross, Yannic M and Bechler, Stefan and Funk, Hannes S and Chang, Li-te and Schulze, Jörg and Ludwigs, Sabine and Slageren, Joris Van}, doi = {10.1002/adfm.202006882}, journal = {Advanced Functional Materials}, title = {Hybrid Spintronic Materials from Conducting Polymers with Molecular Quantum Bits}, url = {https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.202006882}, year = 2020 }
 Link
 https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.202006882
 DOI
 10.1002/adfm.202006882
10. A. Mohamed and J. Anders, “Stability Analysis of Incremental ΣΔ Modulators using Mixed-Logic Dynamical Systems and Optimal Control Theory,” in 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Oct. 2020, pp. 1–5. doi: 10.1109/ISCAS45731.2020.9180952.
 BibTeX
 @inproceedings{9180952, abstract = {In this paper, we present a mixed-logic dynamical (MLD) system model that allows for an iron-clad prediction of the stability of Incremental Sigma Delta (I-ΣΔ) modulators. The model extends the mixed logic dynamical description of freely-running Sigma-Delta (ΣΔ) modulators with single-bit quantizers presented in [1] to the multibit case. Moreover, we use the derived model to compare I-ΣΔs with different loop filter orders and different number of quantizer levels concerning their stability.}, author = {{Mohamed}, A. and {Anders}, J.}, booktitle = {2020 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS45731.2020.9180952}, issn = {2158-1525}, month = {10}, pages = {1-5}, title = {Stability Analysis of Incremental ΣΔ Modulators using Mixed-Logic Dynamical Systems and Optimal Control Theory}, url = {https://ieeexplore.ieee.org/document/9180952/}, year = 2020 }
 Link
 https://ieeexplore.ieee.org/document/9180952/
 DOI
 10.1109/ISCAS45731.2020.9180952
11. A. Mohamed, M. Schmid, A. Tanwear, H. Heidari, and J. Anders, “A Low Noise CMOS Sensor Frontend for a TMR-based Biosensing Platform,” in 2020 IEEE SENSORS Conference, Oct. 2020.
 - BibTeX
 BibTeX
 @conference{noauthororeditor2020noise, abstract = {In this paper, we propose a low noise CMOS frontend for a Point-of-Care (PoC) biosensing platform based on tunnel magnetoresistance (TMR) as sensors. The integration of a low noise and low power integrated circuit (IC) with the TMR sensors reduces power consumption compared to a realization with discrete electronics, and thereby paves the way towards a portable diagnostic system. The FDDA features a gain of around 60 dB with a suitable offset calibration scheme to deal with the large DC offsets caused by TMR and/or magnetic field variations. The ability to deal with changing DC fields is crucial for a portable setup that is intended to be used in unshielded environments outside the lab. The offset cancellation is achieved by two on-chip current steering DACs that can accommodate TMR resistances between 535Ω and 4.7 kΩ. }, author = {{Mohamed}, A. and {Schmid}, M. and {Tanwear}, A. and {Heidari}, H. and {Anders}, J.}, booktitle = {2020 IEEE SENSORS Conference}, month = {10}, title = {A Low Noise CMOS Sensor Frontend for a TMR-based Biosensing Platform}, year = 2020 }
12. D. Neusser, C. Malacrida, M. Kern, Y. M. Gross, J. van Slageren, and S. Ludwigs, “High Conductivities of Disordered P3HT Films by an Electrochemical Doping Strategy,” Chemistry of Materials, vol. 32, Art. no. 14, Jul. 2020, doi: 10.1021/acs.chemmater.0c01293.
 BibTeX
 @article{Neusser_2020, author = {Neusser, David and Malacrida, Claudia and Kern, Michal and Gross, Yannic M. and van Slageren, Joris and Ludwigs, Sabine}, doi = {10.1021/acs.chemmater.0c01293}, journal = {Chemistry of Materials}, month = {07}, number = 14, pages = {6003--6013}, publisher = {American Chemical Society ({ACS})}, title = {High Conductivities of Disordered P3HT Films by an Electrochemical Doping Strategy}, url = {https://doi.org/10.1021%2Facs.chemmater.0c01293}, volume = 32, year = 2020 }
 Link
 https://doi.org/10.1021%2Facs.chemmater.0c01293
 DOI
 10.1021/acs.chemmater.0c01293
13. I. Polian et al., “Exploring the mysteries of system-level test.,” in to appear in Proceedings of the 29th IEEE Asian Test Symposium (ATS′20), Nov. 2020.
 - BibTeX
 BibTeX
 @inproceedings{polian2020exploring, abteilung = {hocos}, author = {Polian, Ilia and Anders, Jens and Becker, Stefan and Bernardi, Paolo and Chakrabarty, Krishnendu and Elhamawy, Nourhan and Sauer, Matthias and Singh, Adith and Sonza Reorda, Matteo and Wagner, Stefan}, booktitle = {to appear in Proceedings of the 29th IEEE Asian Test Symposium (ATS'20)}, month = {11}, title = {Exploring the mysteries of system-level test.}, year = 2020 }
14. J. Zhao, A. Mohamed, and J. Anders, “An Active CMOS NMR Field Probe with Custom Transceiver and ΣΔ Modulator ASICs and an Optical Link,” in 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Oct. 2020, pp. 1–5. doi: 10.1109/ISCAS45731.2020.9181026.
 BibTeX
 @inproceedings{9181026, abstract = {In this paper, we present a CMOS-based miniaturized magnetic resonance (MR) system for magnetic field and trajectory mapping incorporating an electromagnetic interference (EMI) robust optical link. The system consists of a custom-designed, CMOS-based active NMR field probe, a custom-designed, single-bit ΣΔ modulator and a commercial optical link. The low-IF architecture of the transceiver ASIC, reduces the required bandwidth in the digitizer to a few hundred kilohertz, enabling the use of a single-bit ΣΔ modulator, whose high frequency, one bit data stream is ideally suited for feeding the following optical link. The custom ΣΔ modulator uses a third order loop filter and employs a 12-tap FIR DAC to increase its robustness against clock jitter. It is manufactured in a 0.18 μm CMOS technology and achieves an SNDR of 72.19 dB over a Nyquist bandwidth of 800 kHz. In the proposed setup, the 1-bit output stream of the ΣΔ modulator directly feeds the driver of a commercial optical fiber link to transmit the NMR data from inside the NMR magnet to the remotely located digital signal processing unit with a very high robustness against EMI. In-situ NMR experiments with a 1.45 T benchtop magnet using a silicone sample demonstrate the very good performance of the overall system, achieving a frequency resolution of 12.6 Hz or 200 ppb in the estimation of the sample's NMR resonance frequency. This corresponds to an effective magnetic field resolution of 290 nT.}, author = {{Zhao}, J. and {Mohamed}, A. and {Anders}, J.}, booktitle = {2020 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS45731.2020.9181026}, issn = {2158-1525}, month = {10}, pages = {1-5}, title = {An Active CMOS NMR Field Probe with Custom Transceiver and ΣΔ Modulator ASICs and an Optical Link}, url = {https://ieeexplore.ieee.org/document/9181026/}, year = 2020 }
 Link
 https://ieeexplore.ieee.org/document/9181026/
 DOI
 10.1109/ISCAS45731.2020.9181026
2019
1. B. M. K. Alnajjar, A. Buchau, J. Anders, and B. Blümich, “An H-shaped low-field magnet for NMR spectroscopy designed using the finite element method,” International Journal of Applied Electromagnetics and Mechanics, vol. 60, pp. S3–S14, May 2019, doi: 10.3233/JAE-191101.
 BibTeX
 @article{Alnajjar_Buchau_Anders_Blümich_2019, author = {Alnajjar, Belal M.K. and Buchau, André and Anders, Jens and Blümich, Bernhard}, doi = {10.3233/JAE-191101}, issn = {1383-5416}, journal = {International Journal of Applied Electromagnetics and Mechanics}, month = {05}, pages = {S3–S14}, publisher = {IOS Press}, title = {An H-shaped low-field magnet for NMR spectroscopy designed using the finite element method}, url = {http://doi.org/10.3233/JAE-191101}, volume = 60, year = 2019 }
 Link
 http://doi.org/10.3233/JAE-191101
 DOI
 10.3233/JAE-191101
2. J. Anders and K. Lips, “MR to go,” Journal of Magnetic Resonance, vol. 306, pp. 118–123, 2019, doi: 10.1016/j.jmr.2019.07.007.
 BibTeX
 @article{RN72, author = {Anders, J. and Lips, K.}, doi = {10.1016/j.jmr.2019.07.007}, issn = {1090-7807}, journal = {Journal of Magnetic Resonance}, pages = {118-123}, title = {MR to go}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000481413400017}, volume = 306, year = 2019 }
 Link
 /brokenurl#://WOS:000481413400017
 DOI
 10.1016/j.jmr.2019.07.007
3. A. Buchau, “Precise and Robust Magnetic Field Computations for High-End Smart Sensor Applications,” in Boundary Elements and other Mesh Reduction Methods XLII, WIT Press, Southampton UK, Sep. 2019. doi: 10.2495/be420071.
 BibTeX
 @inproceedings{BUCHAU_2019, author = {Buchau, André}, booktitle = {Boundary Elements and other Mesh Reduction Methods {XLII}}, doi = {10.2495/be420071}, month = {09}, publisher = {{WIT} Press, Southampton {UK}}, title = {Precise and Robust Magnetic Field Computations for High-End Smart Sensor Applications}, url = {https://doi.org/10.2495%2Fbe420071}, year = 2019 }
 Link
 https://doi.org/10.2495%2Fbe420071
 DOI
 10.2495/be420071
4. H. Elmar, K. Leonhard, and K. M. K. U. Hassan, “Digital-Analog-Umsetzer mit in Reihe geschalteten Kapazitäten,” DE: 10 2018 206 453.9, 2019
 - BibTeX
 BibTeX
 @patent{elmar2019digitalanalogumsetzer, author = {Elmar, Herzer and Leonhard, Klein and Hassan, Khan Muhammad Khubaib Ul}, number = {DE: 10 2018 206 453.9}, organization = {Fraunhofer Society for the Promotion of Applied Research eV, 80686 Munich, DE}, title = {Digital-Analog-Umsetzer mit in Reihe geschalteten Kapazitäten}, year = 2019 }
5. M. Eschelbach et al., “Comparison of prospective head motion correction with NMR field probes and an optical tracking system,” Magnetic Resonance in Medicine, vol. 81, Art. no. 1, 2019, doi: 10.1002/mrm.27343.
 BibTeX
 @article{doi:10.1002/mrm.27343, author = {Eschelbach, Martin and Aghaeifar, Ali and Bause, Jonas and Handwerker, Jonas and Anders, Jens and Engel, Eva-Maria and Thielscher, Axel and Scheffler, Klaus}, doi = {10.1002/mrm.27343}, eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/mrm.27343}, journal = {Magnetic Resonance in Medicine}, number = 1, pages = {719-729}, title = {Comparison of prospective head motion correction with NMR field probes and an optical tracking system}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/mrm.27343}, volume = 81, year = 2019 }
 Link
 https://onlinelibrary.wiley.com/doi/abs/10.1002/mrm.27343
 DOI
 10.1002/mrm.27343
6. J. Handwerker et al., “A CMOS NMR needle for probing brain physiology with high spatial and temporal resolution,” Nature Methods, vol. 17, Art. no. 1, Nov. 2019, doi: 10.1038/s41592-019-0640-3.
 BibTeX
 @article{Handwerker_2019, author = {Handwerker, Jonas and P{\'{e}}rez-Rodas, Marlon and Beyerlein, Michael and Vincent, Franck and Beck, Armin and Freytag, Nicolas and Yu, Xin and Pohmann, Rolf and Anders, Jens and Scheffler, Klaus}, doi = {10.1038/s41592-019-0640-3}, journal = {Nature Methods}, month = {11}, number = 1, pages = {64--67}, publisher = {Springer Science and Business Media {LLC}}, title = {A {CMOS} {NMR} needle for probing brain physiology with high spatial and temporal resolution}, url = {https://doi.org/10.1038%2Fs41592-019-0640-3}, volume = 17, year = 2019 }
 Link
 https://doi.org/10.1038%2Fs41592-019-0640-3
 DOI
 10.1038/s41592-019-0640-3
7. H. Heidari, P. Mak, J. Anders, and D. Hall, “Guest Editorial Special Issue on Magnetic Sensing Systems for Biomedical Application,” IEEE Sensors Journal, vol. 19, Art. no. 20, Oct. 2019, doi: 10.1109/JSEN.2019.2929887.
 BibTeX
 @article{8844208, abstract = {Magnetic field sensors have been of great interest due to their possible applications in biomedical application over the past decade. Miniaturizing magnetic based sensing systems for biological and chemical assays offer a prospect to modernize the large laboratory instruments into easy-to-use lab-on-a-chip platforms, bringing down the cost, size, and sample use by orders of magnitude. Such sensing systems need to provide fast response, high-sensitivity, and low-cost to be considered viable products. These devices can serve as high-performance diagnostic platforms in a wide range of applications from home healthcare over epidemic disease control and environmental monitoring to biothreat detection.}, author = {{Heidari}, H. and {Mak}, P. and {Anders}, J. and {Hall}, D.}, doi = {10.1109/JSEN.2019.2929887}, issn = {2379-9153}, journal = {IEEE Sensors Journal}, month = {10}, number = 20, pages = {8970-8970}, title = {Guest Editorial Special Issue on Magnetic Sensing Systems for Biomedical Application}, url = {https://ieeexplore.ieee.org/document/8844208/}, volume = 19, year = 2019 }
 Link
 https://ieeexplore.ieee.org/document/8844208/
 DOI
 10.1109/JSEN.2019.2929887
8. A. Horneff et al., “A New CMOS Broadband, High Impedance LNA for MRI Achieving an Input Referred Voltage Noise Spectral Density of 200pV/Hz√,” in 2019 IEEE International Symposium on Circuits and Systems (ISCAS), May 2019, pp. 1–5. doi: 10.1109/ISCAS.2019.8702445.
 BibTeX
 @inproceedings{8702445, abstract = {In this paper, we present a new architecture for the receive-chain in clinical X-nuclei magnetic resonance imaging (MRI) experiments. The proposed architecture requires only a single tuning capacitor to tune the MRI receive coil to the Larmor frequency of the nucleus of interest. The tuning capacitor provides a noise-free preamplification of the MR signal, allowing for relaxed noise constraints in the design of the following high impedance low noise amplifier (LNA). Together with the new architecture, we present a custom designed CMOS LNA with a passband between 1.5 MHz and 90 MHz, covering all clinically relevant nuclei in a 1.5 T MRI system. The custom designed LNA comprises two amplification stages providing a measured total gain of 44 dB and an on-chip DC servo loop to mitigate the effect of offsets in the presence of the large on-chip DC gain. The DC servo loop introduces a measured lower passband frequency at 1.5 MHz. The LNA displays a measured low input referred voltage noise spectral density of 200 pV/√Hz. X-nuclei MRI experiments performed on proton and fluor samples demonstrate the excellent performance of the proposed architecture and LNA implementation.}, author = {{Horneff}, A. and {Schlecker}, B. and {Häberle}, M. and {Hell}, E. and {Ulrici}, J. and {Rasche}, V. and {Anders}, J.}, booktitle = {2019 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2019.8702445}, issn = {2158-1525}, month = {05}, pages = {1-5}, title = {A New CMOS Broadband, High Impedance LNA for MRI Achieving an Input Referred Voltage Noise Spectral Density of 200pV/Hz√}, url = {https://ieeexplore.ieee.org/document/8702445/}, year = 2019 }
 Link
 https://ieeexplore.ieee.org/document/8702445/
 DOI
 10.1109/ISCAS.2019.8702445
9. J. Hrubý et al., “A graphene-based hybrid material with quantum bits prepared by the double Langmuir–Schaefer method,” RSC Adv., vol. 9, Art. no. 42, 2019, doi: 10.1039/C9RA04537F.
 BibTeX
 @article{C9RA04537F, abstract = {The scalability and stability of molecular qubits deposited on surfaces is a crucial step for incorporating them into upcoming electronic devices. Herein{,} we report on the preparation and characterisation of a molecular quantum bit{,} copper(ii)dibenzoylmethane [Cu(dbm)2]{,} deposited by a modified Langmuir–Schaefer (LS) technique onto a graphene-based substrate. A double LS deposition was used for the preparation of a few-layer-graphene (FLG) on a Si/SiO2 substrate with subsequent deposition of the molecules. Magnetic properties were probed by high-frequency electron spin resonance (HF-ESR) spectroscopy and found maintained after deposition. Additional spectroscopic and imaging techniques{,} such as Raman spectroscopy (RS){,} X-ray photoelectron spectroscopy (XPS){,} atomic force microscopy (AFM){,} and scanning electron microscopy (SEM) were performed to characterise the deposited sample. Our approach demonstrated the possibility to utilise a controlled wet-chemistry protocol to prepare an array of potential quantum bits on a disordered graphene-based substrate. The deployed spectroscopic techniques showed unambiguously the robustness of our studied system with a potential to fabricate large-scale{,} intact{,} and stable quantum bits.}, author = {Hrubý, Jakub and Santana, Vinicius T. and Kostiuk, Dmytro and Bouček, Martin and Lenz, Samuel and Kern, Michal and Šiffalovič, Peter and van Slageren, Joris and Neugebauer, Petr}, doi = {10.1039/C9RA04537F}, journal = {RSC Adv.}, number = 42, pages = {24066-24073}, publisher = {The Royal Society of Chemistry}, title = {A graphene-based hybrid material with quantum bits prepared by the double Langmuir–Schaefer method}, url = {http://dx.doi.org/10.1039/C9RA04537F}, volume = 9, year = 2019 }
 Link
 http://dx.doi.org/10.1039/C9RA04537F
 DOI
 10.1039/C9RA04537F
10. M. Häberle et al., “Comparison of Different Precision Pseudo Resistor Realizations in the DC-Feedback of Capacitive Transimpedance Amplifiers,” in 2019 26th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Nov. 2019, pp. 699–702. doi: 10.1109/ICECS46596.2019.8965196.
 BibTeX
 @inproceedings{8965196, abstract = {In this paper, three different pseudo resistor (PR) realizations are compared regarding their noise and linearity performance within the DC feedback loop of an integrator-differentiator transimpedance amplifier (I-D-TIA). Thanks to its intrinsic shot noise suppression, the multi-element pseudo resistor (MEPR) shows the best SNDR for small AC signals around a large DC current. In contrast, for large AC signals around comparably small DC currents, the transconductor based PR introduced by Ferrari et al. in [1] displays a rail-to-rail signal swing capability and a small THD of 0.4% resulting in the best achievable SNDR value. All simulations have been performed on transistor level in a 180 nm SOI CMOS technology with a 1.8 V supply.}, author = {{Häberle}, M. and {Djekic}, D. and {Rajabzadeh}, M. and {Fantner}, G. E. and {Lips}, K. and {Ortmanns}, M. and {Anders}, J.}, booktitle = {2019 26th IEEE International Conference on Electronics, Circuits and Systems (ICECS)}, doi = {10.1109/ICECS46596.2019.8965196}, month = {11}, pages = {699-702}, title = {Comparison of Different Precision Pseudo Resistor Realizations in the DC-Feedback of Capacitive Transimpedance Amplifiers}, url = {https://ieeexplore.ieee.org/document/8965196/}, year = 2019 }
 Link
 https://ieeexplore.ieee.org/document/8965196/
 DOI
 10.1109/ICECS46596.2019.8965196
11. A. Köllner et al., “A 2x2 Pixel Array Camera based on a Backside Illuminated Ge-on-Si Photodetector,” in 2019 IEEE SENSORS, Oct. 2019, pp. 1–4. doi: 10.1109/SENSORS43011.2019.8956731.
 BibTeX
 @inproceedings{8956731, abstract = {This paper proposes a new concept of a Near-Infrared (NIR) micro-system camera with a backside illuminated Germanium-on-Silicon (Ge-on-Si) photodetector. The performance of this photodetector is analyzed and compared to frontside illuminated Ge-on-Si photodetectors. An enhanced responsivity of 0.4 A/W at 1310 nm for the backside illuminated diode is achieved, which is equal to commercial solutions. With the help of zero-biasing, the critical dark current density can be reduced by more than a factor of 80 000 compared to standard biasing with -1 V. By using a backside illuminated diode, reflections of the metal layer are eliminated and the pixel fill factor is increased. Additionally, a proof of concept micro-system with a 2 × 2 pixel array of Ge-on-Si backside illuminated photodetectors and a custom readout ASIC is demonstrated. This proves the functionality of the proposed photodetector and readout concept for NIR camera applications.}, author = {{Köllner}, A. and {Yu}, Z. and {Oehme}, M. and {Anders}, J. and {Kaschel}, M. and {Schulze}, J. and {Burghartz}, J. N.}, booktitle = {2019 IEEE SENSORS}, doi = {10.1109/SENSORS43011.2019.8956731}, issn = {2168-9229}, month = {10}, pages = {1-4}, title = {A 2x2 Pixel Array Camera based on a Backside Illuminated Ge-on-Si Photodetector}, url = {https://ieeexplore.ieee.org/document/8956731/}, year = 2019 }
 Link
 https://ieeexplore.ieee.org/document/8956731/
 DOI
 10.1109/SENSORS43011.2019.8956731
12. P. Lu et al., “Introduction to the Special Issue on the 2019 IEEE European Solid-State Circuits Conference (ESSCIRC),” IEEE Solid-State Circuits Letters, vol. 2, Art. no. 9, Sep. 2019, doi: 10.1109/LSSC.2019.2944716.
 BibTeX
 @article{8877493, abstract = {This Special Issue of the IEEE Solid-State Circuits Letters is dedicated to the selected best papers from the 2019 IEEE European Solid-State Circuits Conference (ESSCIRC) that took place on September 23–26, 2019, in Kraków, Poland. This issue covers papers from all tracks. They are introduced in the following paragraphs.}, author = {{Lu}, P. and {Anders}, J. and {Gielen}, G. and {Klumperink}, E. and {Tavernier}, F. and {Henderson}, R. and {Gemmeke}, T. and {Shor}, J.}, doi = {10.1109/LSSC.2019.2944716}, issn = {2573-9603}, journal = {IEEE Solid-State Circuits Letters}, month = {09}, number = 9, pages = {61-62}, title = {Introduction to the Special Issue on the 2019 IEEE European Solid-State Circuits Conference (ESSCIRC)}, url = {https://ieeexplore.ieee.org/document/8877493/}, volume = 2, year = 2019 }
 Link
 https://ieeexplore.ieee.org/document/8877493/
 DOI
 10.1109/LSSC.2019.2944716
13. R. Magnall et al., “Photolytic and Reductive Activations of 2-Arsaethynolate in a Uranium–Triamidoamine Complex: Decarbonylative Arsenic-Group Transfer Reactions and Trapping of a Highly Bent and Reduced Form,” Chemistry - A European Journal, vol. 25, Art. no. 62, 2019, doi: 10.1002/chem.201903973.
 - BibTeX
 - DOI
 BibTeX
 @article{Magnall2019, abstract = {Little is known about the chemistry of the 2-arsaethynolate anion, but to date it has exclusively undergone fragmentation reactions when reduced. Herein, we report the synthesis of [U(TrenTIPS)(OCAs)] (2, TrenTIPS=N(CH2CH2NSiiPr3)3), which is the first isolable actinide-2-arsaethynolate linkage. UV-photolysis of 2 results in decarbonylation, but the putative [U(TrenTIPS)(As)] product was not isolated and instead only [{\{}U(TrenTIPS){\}}2($\mu$-$\eta$2:$\eta$2-As2H2)] (3) was formed. In contrast, reduction of 2 with [U(TrenTIPS)] gave the mixed-valence arsenido [{\{}U(TrenTIPS){\}}2($\mu$-As)] (4) in very low yield. Complex 4 is unstable which precluded full characterisation, but these photolytic and reductive reactions testify to the tendency of 2-arsaethynolate to fragment with CO release and As transfer. However, addition of 2 to an electride mixture of potassium-graphite and 2,2,2-cryptand gives [{\{}U(TrenTIPS){\}}2{\{}$\mu$-$\eta$2(OAs):$\eta$2(CAs)-OCAs{\}}][K(2,2,2-cryptand)] (5). The coordination mode of the trapped 2-arsaethynolate in 5 is unique, and derives from a new highly reduced and bent form of this ligand with the most acute O-C-As angle in any complex to date (O-C-As {\textless} ≈128°). The trapping rather than fragmentation of this highly reduced O-C-As unit is unprecedented, and quantum chemical calculations reveal that reduction confers donor–acceptor character to the O-C-As unit.}, author = {Magnall, Rosie and Bal{\'{a}}zs, G{\'{a}}bor and Lu, Erli and Kern, Michal and van Slageren, Joris and Tuna, Floriana and Wooles, Ashley J. and Scheer, Manfred and Liddle, Stephen T.}, doi = {10.1002/chem.201903973}, file = {:C$\backslash$:/Users/iismike/Downloads/chem.201903973.pdf:pdf}, issn = {15213765}, journal = {Chemistry - A European Journal}, number = 62, pages = {14246--14252}, pmid = {31478589}, title = {Photolytic and Reductive Activations of 2-Arsaethynolate in a Uranium–Triamidoamine Complex: Decarbonylative Arsenic-Group Transfer Reactions and Trapping of a Highly Bent and Reduced Form}, volume = 25, year = 2019 }
 DOI
 10.1002/chem.201903973
14. A. Mohamed, A. Sakr, and J. Anders, “FIR Feedback in Continuous- Time Incremental Sigma-Delta ADCs,” in 2019 17th IEEE International New Circuits and Systems Conference (NEWCAS), Jun. 2019, pp. 1–4. doi: 10.1109/NEWCAS44328.2019.8961214.
 BibTeX
 @inproceedings{8961214, abstract = {In this paper, we present a new method to include finite-impulse-response (FIR) feedback digital-to-analog converters (DACs) in continuous-time (CT) Incremental Sigma-Delta (I-ΣΔ) analog-to-digital converters (ADC), which minimizes transient overshoots and thereby maximizes the modulator's stability. More specifically, it can be shown that increasing the number of FIR taps in I-ΣΔ feedback DACs could lead to instability or a reduced maximum stable amplitude (MSA), even when using a proper compensation path. However, by presetting the FIR feedback to a voltage close to the input signal, a larger number of FIR taps can be used, increasing the jitter robustness of the CT I-ΣΔ. This presetting is achieved using a low resolution Nyquist rate ADC to preset the FIR taps. Moreover, presetting the FIR feedback slightly increases the modulator's MSA and signal-to-noise ratio compared to a non-return-to-zero (NRZ) feedback. To validate the proposed presetting approach, a third-order I-ΣΔ-ADC employing a 12-tap FIR DAC with presetting using a 4-bit flash ADC is compared against a conventional NRZ DAC and a conventional FIR DAC without presetting in MATLAB/Simulink.}, author = {{Mohamed}, A. and {Sakr}, A. and {Anders}, J.}, booktitle = {2019 17th IEEE International New Circuits and Systems Conference (NEWCAS)}, doi = {10.1109/NEWCAS44328.2019.8961214}, month = {06}, pages = {1-4}, title = {FIR Feedback in Continuous- Time Incremental Sigma-Delta ADCs}, url = {https://ieeexplore.ieee.org/document/8961214/}, year = 2019 }
 Link
 https://ieeexplore.ieee.org/document/8961214/
 DOI
 10.1109/NEWCAS44328.2019.8961214
15. B. Schlecker, A. Hoffmann, A. Chu, M. Ortmanns, K. Lips, and J. Anders, “Towards Low-Cost, High-Sensitivity Point-of-Care Diagnostics Using VCO-Based ESR-on-a-Chip Detectors,” IEEE Sensors Journal, vol. 19, Art. no. 20, Oct. 2019, doi: 10.1109/JSEN.2018.2875767.
 BibTeX
 @article{8490671, abstract = {In this paper, we present a new architecture for a voltage-controlled oscillator (VCO)-based electron spin resonance (ESR) detection for a future use in portable, point-of-care ESR spectrometers. The proposed architecture is centered around an application-specified integrated circuit (ASIC) containing a VCO-based ESR detector with two distinct tuning ports with largely different VCO gains to enable wide frequency sweeps and small-signal frequency modulations while keeping the requirements on the digital-to-analog converter driving the ports manageable. In addition, the proposed ASIC features a second VCO for an on-chip frequency downconversion via mixing. To allow for a precise derivation of the operating frequency from an external reference as it is required for quantitative ESR experiments, the two on-chip VCOs are embedded into an offset phase-locked loop. The proposed architecture is verified with ESR experiments on commonly used ESR standard samples (DPPH and BDPA). In these experiments, a spin sensitivity of 1.7 × 109 spins/(G√Hz) has been achieved at B0 = 450mT, which is comparable to the state of the art, using a permanent magnet and low-cost signal processing on an field-programmable gate array. The presented proof-of-concept experiments clearly demonstrate the potential of the proposed VCO-based ESR detection system for future point-of-care applications.}, author = {{Schlecker}, B. and {Hoffmann}, A. and {Chu}, A. and {Ortmanns}, M. and {Lips}, K. and {Anders}, J.}, doi = {10.1109/JSEN.2018.2875767}, issn = {1558-1748}, journal = {IEEE Sensors Journal}, month = {10}, number = 20, pages = {8995-9003}, title = {Towards Low-Cost, High-Sensitivity Point-of-Care Diagnostics Using VCO-Based ESR-on-a-Chip Detectors}, url = {https://ieeexplore.ieee.org/document/8490671/}, volume = 19, year = 2019 }
 Link
 https://ieeexplore.ieee.org/document/8490671/
 DOI
 10.1109/JSEN.2018.2875767
16. M. Spiess, A. Buchau, and J. Anders, “Precision finite element method simulations of a chip-integrated magnetic resonance coil for in-situ MR applications,” in 2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG), Jul. 2019, pp. 1–4. doi: 10.1109/COMPUMAG45669.2019.9032724.
 BibTeX
 @inproceedings{9032724, abstract = {With the latest advances in system miniaturization, magnetic resonance (MR) is gaining interest as a tool for material characterization and chemical process control applications. Monolithically integrating both the receiver coil and the active MR electronics reduces the system size and cost. Moreover, the short interconnects avoid wave effects in the connecting cables, leading to a greatly increased design flexibility in the matching network. However, an integrated coil introduces several tradeoffs, which need to be understood well to still be able to achieve an excellent overall system performance. As shown in this paper, precision finite element method electromagnetic simulations are a suitable tool to extract the planar coil's nonidealities quantitatively and, thereby, devise suitable countermeasures to improve the overall system performance.}, author = {{Spiess}, M. and {Buchau}, A. and {Anders}, J.}, booktitle = {2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)}, doi = {10.1109/COMPUMAG45669.2019.9032724}, month = {07}, pages = {1-4}, title = {Precision finite element method simulations of a chip-integrated magnetic resonance coil for in-situ MR applications}, url = {https://ieeexplore.ieee.org/document/9032724/}, year = 2019 }
 Link
 https://ieeexplore.ieee.org/document/9032724/
 DOI
 10.1109/COMPUMAG45669.2019.9032724
2018
1. A. AlMarashli, J. Anders, J. Becker, and M. Ortmanns, “A Nyquist Rate SAR ADC Employing Incremental Sigma Delta DAC Achieving Peak SFDR = 107 dB at 80 kS/s,” IEEE Journal of Solid-State Circuits, vol. 53, Art. no. 5, May 2018, doi: 10.1109/JSSC.2017.2776299.
 BibTeX
 @article{8207772, abstract = {This paper introduces an architecture and design for high-resolution high-linearity Nyquist rate successive approximation register (SAR) analog-to-digital converters (ADCs) using a hybrid capacitive and incremental ΣA digital-to-analog converter (DAC). The proposed architecture benefits from an intrinsically linear 1.5-bit ΣA DAC to resolve the fine bits of the SAR ADC after a coarse conversion phase with a monotonically switched capacitive DAC (CDAC). The achieved linearity relies neither on a highly matched CDAC nor on any dynamic linearization techniques but on a single calibration of the coarse CDAC using the available ΣA DAC at startup. Therefore, the CDAC can be sized solely upon noise requirements. The SAR ADC employs two parallel dynamic comparators for improved power efficiency. A prototype was fabricated in a 40-nm CMOS, with power supplies of 1.1 and 2.5 V. It occupies an active area of only 0.074 mm2. The prototype achieves a measured peak spurious free dynamic range (SFDR) of 107 dB and peak signal to noise and distortion ratio (SNDR) of 84.8 dB dB at 80kS/s Nyquist rate operation with 5.3-kHz input. The measured performance at the Nyquist frequency, limited by signal source quality, is SFDR = 99.5 dB and SNDR = 83.5 dB. The core power consumption is 110 μW. In oversampling mode, the ADC achieves an SNDR above 90 dB over a 5-kHz bandwidth.}, author = {{AlMarashli}, A. and {Anders}, J. and {Becker}, J. and {Ortmanns}, M.}, doi = {10.1109/JSSC.2017.2776299}, issn = {1558-173X}, journal = {IEEE Journal of Solid-State Circuits}, month = {05}, number = 5, pages = {1493-1507}, title = {A Nyquist Rate SAR ADC Employing Incremental Sigma Delta DAC Achieving Peak SFDR = 107 dB at 80 kS/s}, url = {https://ieeexplore.ieee.org/document/8207772/}, volume = 53, year = 2018 }
 Link
 https://ieeexplore.ieee.org/document/8207772/
 DOI
 10.1109/JSSC.2017.2776299
2. S. Bader, M. Ortmanns, and J. Anders, “Nonlinear Energy-Efficient Noise-Aware Design of CMOS LC Tank Oscillators,” 2018 Ieee International Symposium on Circuits and Systems (Iscas), 2018, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000451218703083
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 @article{RN10, author = {Bader, S. and Ortmanns, M. and Anders, J.}, issn = {0271-4302}, journal = {2018 Ieee International Symposium on Circuits and Systems (Iscas)}, title = {Nonlinear Energy-Efficient Noise-Aware Design of CMOS LC Tank Oscillators}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000451218703083}, year = 2018 }
 Link
 /brokenurl#://WOS:000451218703083
3. S. Bechler et al., “Formation of Mn5Ge3 by thermal annealing of evaporated Mn on doped Ge on Si(111),” Semiconductor Science and Technology, vol. 33, Art. no. 9, 2018, doi: 10.1088/1361-6641/aad4cf.
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 BibTeX
 @article{Bechler2018, abstract = {Mn5Ge3 can be used as a ferromagnetic contact material to fabricate spintronic devices. Here, we show that Mn5Ge3 can be fabricated with a simple germanidation process by evaporating Mn on undoped and doped Ge on Si followed by a thermal annealing step to form the ferromagnetic Mn5Ge3 phase. This solid phase preparation of Mn5Ge3 is a robust process with a minor dependence on the annealing parameters. The formation of Mn5Ge3 can be realized using undoped as well as highly doped p-Ge and n-Ge with different doping levels. The interface of Mn5Ge3 is atomically sharp which leads to very low contact resistivities < 1 × 10−7 Ωcm2.}, author = {Bechler, Stefan and Kern, Michal and Funk, Hannes Simon and Colston, Gerard and Fischer, Inga Anita and Wei{\ss}haupt, David and Myronov, Maksym and {Van Slageren}, Joris and Schulze, J{\"{o}}rg}, doi = {10.1088/1361-6641/aad4cf}, file = {:C$\backslash$:/Users/iismike/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Bechler et al. - 2018 - Formation of Mn5Ge3 by thermal annealing of evaporated Mn on doped Ge on Si(111).pdf:pdf}, issn = {13616641}, journal = {Semiconductor Science and Technology}, number = 9, pages = 95008, title = {Formation of Mn5Ge3 by thermal annealing of evaporated Mn on doped Ge on Si(111)}, volume = 33, year = 2018 }
 DOI
 10.1088/1361-6641/aad4cf
4. A. Buchau and M. Jüttner, “A concept of separated numerical formulations for the solution and evaluation of complex field problems,” International Journal of Computational Methods and Experimental Measurements, vol. 6, Art. no. 6, Jan. 2018, doi: 10.2495/cmem-v6-n6-1008-1018.
 BibTeX
 @article{Buchau_2018, author = {Buchau, André and Jüttner, Matthias}, doi = {10.2495/cmem-v6-n6-1008-1018}, journal = {International Journal of Computational Methods and Experimental Measurements}, month = {01}, number = 6, pages = {1008--1018}, publisher = {{WITPRESS} {LTD}.}, title = {A concept of separated numerical formulations for the solution and evaluation of complex field problems}, url = {https://doi.org/10.2495%2Fcmem-v6-n6-1008-1018}, volume = 6, year = 2018 }
 Link
 https://doi.org/10.2495%2Fcmem-v6-n6-1008-1018
 DOI
 10.2495/cmem-v6-n6-1008-1018
5. A. Chu, B. Schlecker, K. Lips, M. Ortmanns, and J. Anders, “An 8-channel 13GHz ESR-on-a-Chip injection-locked vco-array achieving 200μM-concentration sensitivity,” in 2018 IEEE International Solid - State Circuits Conference - (ISSCC), Feb. 2018, pp. 354–356. doi: 10.1109/ISSCC.2018.8310330.
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 @inproceedings{8310330, abstract = {Thanks to their unmatched specificity, methods based on magnetic resonance effects are amongst the most powerful spectroscopic techniques available today. Out of these methods, due to the availability of improved electronics at the required frequencies in the tens of GHz region, electron spin resonance (ESR) spectroscopy is gaining significant attention in the research community as a tool in life science and materials science research.}, author = {{Chu}, A. and {Schlecker}, B. and {Lips}, K. and {Ortmanns}, M. and {Anders}, J.}, booktitle = {2018 IEEE International Solid - State Circuits Conference - (ISSCC)}, doi = {10.1109/ISSCC.2018.8310330}, issn = {2376-8606}, month = {02}, pages = {354-356}, title = {An 8-channel 13GHz ESR-on-a-Chip injection-locked vco-array achieving 200μM-concentration sensitivity}, url = {https://ieeexplore.ieee.org/document/8310330/}, year = 2018 }
 Link
 https://ieeexplore.ieee.org/document/8310330/
 DOI
 10.1109/ISSCC.2018.8310330
6. D. Djekic, G. Fantner, K. Lips, M. Ortmanns, and J. Anders, “A 0.1% THD, 1-M $Ømega$ to 1-G $Ømega$ Tunable, Temperature-Compensated Transimpedance Amplifier Using a Multi-Element Pseudo-Resistor,” IEEE Journal of Solid-State Circuits, vol. 53, Art. no. 7, Jul. 2018, doi: 10.1109/JSSC.2018.2820701.
 BibTeX
 @article{8345577, abstract = {In this paper, a transimpedance amplifier (TIA) is presented that utilizes a modified pseudo-resistor (PR) with improved robustness against temperature and process variations, enhanced linearity, and reduced parasitics. Using a biasing scheme named pseudo current mirror, the conventional dependence on absolute process parameters is reduced to a dependence on matching of alike devices. The linearity and noise performance as well as the immunity against process variations of the presented TIA are improved by the series connection of multiple PR elements. Moreover, it is shown how implementing the design in a silicon-on-insulator (SOI) technology reduces critical parasitics, which in turn enables the use of the multi-element PR in highspeed, high-gain, and low-distortion TIAs. A prototype realization in a 180-nm CMOS SOI technology achieves a tunability in transimpedance of three orders of magnitude from 1 GΩ down to 1 MΩ with corresponding bandwidths from 8 kHz to 2 MHz. By design, the contribution of shot noise is rendered negligible and the white noise floor of the prototype realization approaches the theoretical thermal noise limit, e.g., 5.5 fA/√(Hz) for a transimpedance of 1 GΩ and 140 fA/√(Hz) for 1 MΩ. Total Hz for a harmonic distortion values of less than 0.1% are achieved for an input amplitude of 300 pAp-p for 1 GΩ, 4.0 nAp-p for 100 MΩ, and 40 nAp-p for 10 MΩ, and less than 1% is achieved for an input amplitude of 550 nAp-p for 1 MΩ. The presented TIA consumes an area of 0.07 mm2 and dissipates a power of 9.3 mW for the opamp and a maximum power of 0.2 mW for the PR from a 1.8-V supply.}, author = {{Djekic}, D. and {Fantner}, G. and {Lips}, K. and {Ortmanns}, M. and {Anders}, J.}, doi = {10.1109/JSSC.2018.2820701}, issn = {1558-173X}, journal = {IEEE Journal of Solid-State Circuits}, month = {07}, number = 7, pages = {1913-1923}, title = {A 0.1% THD, 1-M $\Omega$ to 1-G $\Omega$ Tunable, Temperature-Compensated Transimpedance Amplifier Using a Multi-Element Pseudo-Resistor}, url = {https://ieeexplore.ieee.org/document/8345577/}, volume = 53, year = 2018 }
 Link
 https://ieeexplore.ieee.org/document/8345577/
 DOI
 10.1109/JSSC.2018.2820701
7. S. Grabmaier, M. Jüttner, and W. Rucker, “Coupling of finite element method and integral formulation for vector Helmholtz equation,” Compel : international journal for computation and mathematics in electrical and electronic engineering, vol. 37, Art. no. 4, SI, 2018, doi: 10.1108/COMPEL-08-2017-0346.
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 BibTeX
 @article{grabmaier2018coupling, affiliation = {Grabmaier, S (Reprint Author), Univ Stuttgart, Inst Theory Elect Engn, Stuttgart, Germany. Grabmaier, Sebastian; Juettner, Matthias; Rucker, Wolfgang, Univ Stuttgart, Inst Theory Elect Engn, Stuttgart, Germany.}, author = {Grabmaier, Sebastian and Jüttner, Matthias and Rucker, Wolfgang}, doi = {10.1108/COMPEL-08-2017-0346}, issn = {0332-1649}, journal = {Compel : international journal for computation and mathematics in electrical and electronic engineering}, language = {eng}, number = {4, SI}, pages = {1405-1417}, publisher = {Emerald}, research-areas = {Computer Science; Engineering; Mathematics}, title = {Coupling of finite element method and integral formulation for vector Helmholtz equation}, unique-id = {ISI:000447495900010}, volume = 37, year = 2018 }
 DOI
 10.1108/COMPEL-08-2017-0346
8. M. Haberle, D. Djekic, G. E. Fantner, K. Lips, M. Ortmanns, and J. Anders, “An integrator-differentiator TIA using a multi-element pseudo-resistor in its DC servo loop for enhanced noise performance,” Esscirc 2018 - Ieee 44th European Solid State Circuits Conference (Esscirc), pp. 294–297, 2018, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000448159800077
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 BibTeX
 @article{RN35, author = {Haberle, M. and Djekic, D. and Fantner, G. E. and Lips, K. and Ortmanns, M. and Anders, J.}, issn = {1930-8833}, journal = {Esscirc 2018 - Ieee 44th European Solid State Circuits Conference (Esscirc)}, pages = {294-297}, title = {An integrator-differentiator TIA using a multi-element pseudo-resistor in its DC servo loop for enhanced noise performance}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000448159800077}, year = 2018 }
 Link
 /brokenurl#://WOS:000448159800077
9. A. Horneff et al., “An EM Simulation-Based Design Flow for Custom-Built MR Coils Incorporating Signal and Noise,” IEEE Transactions on Medical Imaging, vol. 37, Art. no. 2, Feb. 2018, doi: 10.1109/TMI.2017.2764160.
 BibTeX
 @article{8070983, abstract = {Developing custom-built MR coils is a cumbersome task, in which an a priori prediction of the coils' SNR performance, their sensitivity pattern, and their depth of penetration helps to greatly speed up the design process by reducing the required hardware manufacturing iterations. The simulation-based design flow presented in this paper takes the entire MR imaging process into account. That is, it includes all geometric and material properties of the coil and the phantom, the thermal noise as well as the target MR sequences. The proposed simulationdriven design flow is validated using a manufactured prototype coil, whose performance was optimized regarding its SNR performance, based on the presented design flow, by comparing the coil's measured performance against the simulated results. In these experiments, the mean and the standard deviation of the relative error between the simulated and measured coil sensitivity pattern were found to be μ = 1.79% and σ = 3.15%. Moreover, the peak deviation between the simulated and measured voxel SNR was found to be less than 4%, indicating that simulations are in good accordance with the measured results, validating the proposed software-based design approach.}, author = {{Horneff}, A. and {Eder}, M. and {Hell}, E. and {Ulrici}, J. and {Felder}, J. and {Rasche}, V. and {Anders}, J.}, doi = {10.1109/TMI.2017.2764160}, issn = {1558-254X}, journal = {IEEE Transactions on Medical Imaging}, month = {02}, number = 2, pages = {527-535}, title = {An EM Simulation-Based Design Flow for Custom-Built MR Coils Incorporating Signal and Noise}, url = {https://ieeexplore.ieee.org/document/8070983/}, volume = 37, year = 2018 }
 Link
 https://ieeexplore.ieee.org/document/8070983/
 DOI
 10.1109/TMI.2017.2764160
10. M. Häberle, D. Djekic, G. E. Fantner, K. Lips, M. Ortmanns, and J. Anders, “An Integrator-Differentiator TIA Using a Multi-Element Pseudo-Resistor in its DC Servo Loop for Enhanced Noise Performance,” in ESSCIRC 2018 - IEEE 44th European Solid State Circuits Conference (ESSCIRC), Sep. 2018, pp. 294–297. doi: 10.1109/ESSCIRC.2018.8494290.
 BibTeX
 @inproceedings{8494290, abstract = {In this paper, we present an integrator-differentiator transimpedance amplifier (TIA) featuring a multielement pseudo-resistor (MEPR) in the DC feedback path for improved noise performance in the presence of non-zero DC input currents. The presented prototype is implemented in a standard 180 nm CMOS technology and achieves an inband transimpedance of 10 MΩ over a 2.7 MHz signal bandwidth. The MEPR resistor in the DC servo loop can be tuned between 700 k Ω and 100 MΩ enabling a precise adjustment of the TIA's lower cutoff frequency. For a DC feedback resistance of 700 k Ω, the TIA provides an input referred noise floor of 180 fA/√Hz at zero input current, which only marginally increases to 220 fA/√Hz for the maximum bias current of 1 μA. The TIA consumes 0.6 mm2 of chip area and 18.5 mW of power from a 1.8 V supply.}, author = {{Häberle}, M. and {Djekic}, D. and {Fantner}, G. E. and {Lips}, K. and {Ortmanns}, M. and {Anders}, J.}, booktitle = {ESSCIRC 2018 - IEEE 44th European Solid State Circuits Conference (ESSCIRC)}, doi = {10.1109/ESSCIRC.2018.8494290}, issn = {1930-8833}, month = {09}, pages = {294-297}, title = {An Integrator-Differentiator TIA Using a Multi-Element Pseudo-Resistor in its DC Servo Loop for Enhanced Noise Performance}, url = {https://ieeexplore.ieee.org/document/8494290/}, year = 2018 }
 Link
 https://ieeexplore.ieee.org/document/8494290/
 DOI
 10.1109/ESSCIRC.2018.8494290
11. F. Moro et al., “Room Temperature Uniaxial Magnetic Anisotropy Induced By Fe-Islands in the InSe Semiconductor Van Der Waals Crystal,” Advanced Science, vol. 5, Art. no. 7, 2018, doi: 10.1002/advs.201800257.
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 BibTeX
 @article{Moro2018, abstract = {The controlled manipulation of the spin and charge of electrons in a semiconductor has the potential to create new routes to digital electronics beyond Moore's law, spintronics, and quantum detection and imaging for sensing applications. These technologies require a shift from traditional semiconducting and magnetic nanostructured materials. Here, a new material system is reported, which comprises the InSe semiconductor van der Waals crystal that embeds ferromagnetic Fe-islands. In contrast to many traditional semiconductors, the electronic properties of InSe are largely preserved after the incorporation of Fe. Also, this system exhibits ferromagnetic resonances and a large uniaxial magnetic anisotropy at room temperature, offering opportunities for the development of functional devices that integrate magnetic and semiconducting properties within the same material system.}, author = {Moro, Fabrizio and Bhuiyan, Mahabub A. and Kudrynskyi, Zakhar R. and Puttock, Robert and Kazakova, Olga and Makarovsky, Oleg and Fay, Michael W. and Parmenter, Christopher and Kovalyuk, Zakhar D. and Fielding, Alistar J. and Kern, Michal and van Slageren, Joris and Patan{\`{e}}, Amalia}, doi = {10.1002/advs.201800257}, file = {:P$\backslash$:/Work-Archive/Papers/InSeFe/advs.201800257.pdf:pdf}, issn = {21983844}, journal = {Advanced Science}, number = 7, title = {Room Temperature Uniaxial Magnetic Anisotropy Induced By Fe-Islands in the InSe Semiconductor Van Der Waals Crystal}, volume = 5, year = 2018 }
 DOI
 10.1002/advs.201800257
12. P. Neugebauer et al., “Ultra-broadband EPR spectroscopy in field and frequency domains,” Phys. Chem. Chem. Phys., vol. 20, Art. no. 22, 2018, doi: 10.1039/C7CP07443C.
 BibTeX
 @article{C7CP07443C, abstract = {Electron paramagnetic resonance (EPR) is a powerful technique to investigate the electronic and magnetic properties of a wide range of materials. We present the first combined terahertz (THz) field and frequency domain electron paramagnetic resonance (HFEPR/FDMR) spectrometer designed to investigate the electronic structure and magnetic properties of molecular systems{,} thin films and solid state materials in a very broad frequency range of 85–1100 GHz. In this paper{,} we show high resolution frequency-field (Zeeman) maps (170–380 GHz by 0–15 T) recorded on two single-molecule magnets{,} [Mn2(saltmen)2(ReO4)2] and [Mn2(salpn)2(H2O)2](ClO4)2{,} which give direct access to the field-dependence of the energy level diagram. Furthermore{,} supression of standing waves in the described system and the sensitivity in field and frequency domain operations is evaluated and discussed.}, author = {Neugebauer, P. and Bloos, D. and Marx, R. and Lutz, P. and Kern, M. and Aguilà, D. and Vaverka, J. and Laguta, O. and Dietrich, C. and Clérac, R. and van Slageren, J.}, doi = {10.1039/C7CP07443C}, journal = {Phys. Chem. Chem. Phys.}, number = 22, pages = {15528-15534}, publisher = {The Royal Society of Chemistry}, title = {Ultra-broadband EPR spectroscopy in field and frequency domains}, url = {http://dx.doi.org/10.1039/C7CP07443C}, volume = 20, year = 2018 }
 Link
 http://dx.doi.org/10.1039/C7CP07443C
 DOI
 10.1039/C7CP07443C
13. M. Rajabzadeh, D. Djekic, M. Haeberle, J. Becker, J. Anders, and M. Ortmanns, “Comparison Study of Integrated Potentiostats: Resistive-TIA, Capacitive-TIA, CT ΣΔ Modulator,” in 2018 IEEE International Symposium on Circuits and Systems (ISCAS), May 2018, pp. 1–5. doi: 10.1109/ISCAS.2018.8351029.
 BibTeX
 @inproceedings{8351029, abstract = {In this paper, a comparison between three different current readouts for micro-potentiostats is presented: resistive transimpedance amplifier (R-TIA), capacitive transimpedance amplifier (C-TIA), and current-mode continuous-time sigma-delta modulator (Current-CTSDM). The comparison is carried out on the signal transfer function, the required amplifier gain-bandwidth (GBW), its input referred noise current, required area and power, and dynamic range. Each approach and its limitations are separately discussed. The three systems have been simulated using VerilogA models and the results are compared. It is shown that each system comes with its own limitations, however current-mode CTSDM are more beneficial due to their intrinsic digitization.}, author = {{Rajabzadeh}, M. and {Djekic}, D. and {Haeberle}, M. and {Becker}, J. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2018 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2018.8351029}, issn = {2379-447X}, month = {05}, pages = {1-5}, title = {Comparison Study of Integrated Potentiostats: Resistive-TIA, Capacitive-TIA, CT ΣΔ Modulator}, url = {https://ieeexplore.ieee.org/document/8351029/}, year = 2018 }
 Link
 https://ieeexplore.ieee.org/document/8351029/
 DOI
 10.1109/ISCAS.2018.8351029
14. M. Rajabzadeh, D. Djekic, M. Haeberle, J. Becker, J. Anders, and M. Ortmanns, “Comparison Study of Integrated Potentiostats: Resistive-TIA, Capacitive-TIA, CT Sigma Delta Modulator,” 2018 Ieee International Symposium on Circuits and Systems (Iscas), 2018, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000451218700141
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 BibTeX
 @article{RN51, author = {Rajabzadeh, M. and Djekic, D. and Haeberle, M. and Becker, J. and Anders, J. and Ortmanns, M.}, issn = {0271-4302}, journal = {2018 Ieee International Symposium on Circuits and Systems (Iscas)}, title = {Comparison Study of Integrated Potentiostats: Resistive-TIA, Capacitive-TIA, CT Sigma Delta Modulator}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000451218700141}, year = 2018 }
 Link
 /brokenurl#://WOS:000451218700141
15. D. Vögeli, S. Grabmaier, M. Jüttner, M. Weyrich, P. Göhner, and W. M. Rucker, “Intelligent and Distributed Solving of Multiphysics Problems Coordinated by Software Agents - An Intelligent Approach for Decentralized Simulations,” in Proceedings of the 10th International Conference on Agents and Artificial Intelligence, SCITEPRESS - Science and Technology Publications, 2018, pp. 200–207. doi: 10.5220/0006590402000207.
 BibTeX
 @inproceedings{Voegeli_2018, abstract = {This paper presents an intelligent approach to support engineers with performing computational simulation of new developments and prototypes. With multiple interacting physical effects and large three dimensional models the choice of the right solution strategy is crucial for a correct solution and an acceptable calculation time. The presented multi-agent system can solve these simulation tasks using distributed heterogeneous computation resources with the objective to reduce the calculation time. An important factor for the criterion time is the choice of the linear solver. Here a case-based reasoning concept is introduced to improve the decisions in the multi-agent system. Allowing each agent to solve its problem part by using appropriate solution methods, a decentralized architecture with autonomous software agents is provided.}, author = {Vögeli, Desir{\'{e}}e and Grabmaier, Sebastian and Jüttner, Matthias and Weyrich, Michael and Göhner, Peter and Rucker, Wolfgang M.}, booktitle = {Proceedings of the 10th International Conference on Agents and Artificial Intelligence}, doi = {10.5220/0006590402000207}, isbn = {978-989-758-275-2}, pages = {200-207}, publisher = {{SCITEPRESS} - Science and Technology Publications}, title = {Intelligent and Distributed Solving of Multiphysics Problems Coordinated by Software Agents - An Intelligent Approach for Decentralized Simulations}, url = {https://doi.org/10.5220%2F0006590402000207}, volume = 1, year = 2018 }
 Link
 https://doi.org/10.5220%2F0006590402000207
 DOI
 10.5220/0006590402000207
16. P. Zhang et al., “Exchange coupling and single molecule magnetism in redox-active tetraoxolene-bridged dilanthanide complexes,” Chem. Sci., vol. 9, Art. no. 5, 2018, doi: 10.1039/C7SC04873D.
 BibTeX
 @article{C7SC04873D, abstract = {Tetraoxolene radical-bridged lanthanide SMM systems were prepared for the first time by reduction of the respective neutral compounds. Magnetic measurements reveal the profound influence of the radical center on magnetic behavior. Strong magnetic couplings are revealed in the radical species{,} which switch on SMM behavior under zero applied field for DyIII and TbIII compounds. HFEPR spectra unravel the contributions of the magnetic coupling and the magnetic anisotropy. For GdIII this results in much more accurate magnetic coupling parameters with respect to bulk magnetic measurements.}, author = {Zhang, Peng and Perfetti, Mauro and Kern, Michal and Hallmen, Philipp P. and Ungur, Liviu and Lenz, Samuel and Ringenberg, Mark R. and Frey, Wolfgang and Stoll, Hermann and Rauhut, Guntram and van Slageren, Joris}, doi = {10.1039/C7SC04873D}, journal = {Chem. Sci.}, number = 5, pages = {1221-1230}, publisher = {The Royal Society of Chemistry}, title = {Exchange coupling and single molecule magnetism in redox-active tetraoxolene-bridged dilanthanide complexes}, url = {http://dx.doi.org/10.1039/C7SC04873D}, volume = 9, year = 2018 }
 Link
 http://dx.doi.org/10.1039/C7SC04873D
 DOI
 10.1039/C7SC04873D
17. A. Øwre, M. Vinum, M. Kern, J. van Slageren, J. Bendix, and M. Perfetti, “Chiral, Heterometallic Lanthanide–Transition Metal Complexes by Design,” Inorganics, vol. 6, Art. no. 3, Jul. 2018, doi: 10.3390/inorganics6030072.
 BibTeX
 @article{_wre_2018, abstract = {Achieving control over coordination geometries in lanthanide complexes remains a challenge to the coordination chemist. This is particularly the case in the field of molecule-based magnetism, where barriers for magnetic relaxation processes as well as tunneling pathways are strongly influenced by the lanthanide coordination geometry. Addressing the challenge of design of 4f-element coordination environments, the ubiquitous Ln(hfac)3 moieties have been shown to be applicable as Lewis acids coordinating transition metal acetylacetonates facially leading to simple, chiral lanthanide–transition metal heterodinuclear complexes. The broad scope of this approach is illustrated by the synthesis of a range of such complexes LnM: LnM(hfac)3(μ2-acac-O,O,O′)3 (Ln = La, Pr, Gd; M = Cr, Fe, Ga), with approximate three-fold symmetry. The complexes have been crystallographically characterized and exhibit polymorphism for some combinations of 4f and 3d metal centers. However, an isostructural set of systems spanning several lanthanides which exhibit spontaneous resolution in the orthorhombic Sohncke space group P212121 is presented here. The electronic structure and ensuing magnetic properties have been studied by EPR spectroscopy and magnetometry. The GdFe, PrFe, and PrCr complexes exhibit ferromagnetic coupling, while GdCr exhibits antiferromagnetic coupling. GdGa exhibits slow relaxation of the magnetization in applied static fields.}, author = {{\O}wre, Anders and Vinum, Morten and Kern, Michal and van Slageren, Joris and Bendix, Jesper and Perfetti, Mauro}, doi = {10.3390/inorganics6030072}, journal = {Inorganics}, month = {07}, number = 3, pages = 72, publisher = {{MDPI} {AG}}, title = {Chiral, Heterometallic Lanthanide{\textendash}Transition Metal Complexes by Design}, url = {https://doi.org/10.3390%2Finorganics6030072}, volume = 6, year = 2018 }
 Link
 https://doi.org/10.3390%2Finorganics6030072
 DOI
 10.3390/inorganics6030072
2017
1. A. AlMarashli, J. Anders, J. Becker, and M. Ortmanns, “A 107 dB SFDR, 80 kS/s Nyquist-rate SAR ADC using a hybrid capacitive and incremental ΣΔ DAC,” in 2017 Symposium on VLSI Circuits, Jun. 2017, pp. C240–C241. doi: 10.23919/VLSIC.2017.8008494.
 BibTeX
 @inproceedings{8008494, abstract = {This paper introduces an architecture and design for high resolution, high linearity Nyquist rate SAR ADCs requiring only a single simple calibration at startup. The proposed architecture benefits from an intrinsically linear 1.5 bit ΣΔ DAC to resolve the fine bits of the SAR ADC after a coarse conversion phase with a monotonically switched capacitive DAC. The ΣΔ DAC is also used for a single shot calibration of the coarse CDAC which therefore does not require good matching and can be sized solely upon noise requirements. A prototype was fabricated in 40 nm CMOS, with power supplies of 1.1 V and 2.5 V. It occupies an active area of only 0.074mm2. The prototype achieves a measured peak SFDR of 107 dB and a noise limited SNDR of 84.8 dB at 80 kS/s Nyquist rate operation. The core power consumption is 101 μW at 80 kS/s. In oversampling mode, the ADC achieves an SNDR above 90 dB over a 5 kHz bandwidth.}, author = {{AlMarashli}, A. and {Anders}, J. and {Becker}, J. and {Ortmanns}, M.}, booktitle = {2017 Symposium on VLSI Circuits}, doi = {10.23919/VLSIC.2017.8008494}, month = {06}, pages = {C240-C241}, title = {A 107 dB SFDR, 80 kS/s Nyquist-rate SAR ADC using a hybrid capacitive and incremental ΣΔ DAC}, url = {https://ieeexplore.ieee.org/document/8008494/}, year = 2017 }
 Link
 https://ieeexplore.ieee.org/document/8008494/
 DOI
 10.23919/VLSIC.2017.8008494
2. A. AlMarashli, J. Anders, J. Becker, and M. Ortmanns, “A 107 dB SFDR, 80 kS/s Nyquist-rate SAR ADC using a hybrid capacitive and incremental Sigma Delta DAC,” 2017 Symposium on Vlsi Circuits, pp. C240–C241, 2017, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000428759000093
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 BibTeX
 @article{RN1, author = {AlMarashli, A. and Anders, J. and Becker, J. and Ortmanns, M.}, journal = {2017 Symposium on Vlsi Circuits}, pages = {C240-C241}, title = {A 107 dB SFDR, 80 kS/s Nyquist-rate SAR ADC using a hybrid capacitive and incremental Sigma Delta DAC}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000428759000093}, year = 2017 }
 Link
 /brokenurl#://WOS:000428759000093
3. J. Anders et al., “A-245 dB FOM 48 fs rms jitter semi-digital PLL with intrinsic temperature compensation in 130 nm CMOS,” 2017 Ieee Asian Solid-State Circuits Conference (a-Sscc), pp. 325–328, 2017, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000426511300082
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 BibTeX
 @article{RN6, author = {Anders, J. and Bader, S. and Dietl, M. and Sareen, P. and Rombach, G. and Tambouris, S. and Ortmanns, M.}, journal = {2017 Ieee Asian Solid-State Circuits Conference (a-Sscc)}, pages = {325-328}, title = {A-245 dB FOM 48 fs rms jitter semi-digital PLL with intrinsic temperature compensation in 130 nm CMOS}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000426511300082}, year = 2017 }
 Link
 /brokenurl#://WOS:000426511300082
4. A. Buchau and W. M. Rucker, “A meshfree isosurface computation method for boundary element methods,” International Journal of Computational Methods and Experimental Measurements, vol. 5, Art. no. 5, Jun. 2017, doi: 10.2495/cmem-v5-n5-647-658.
 BibTeX
 @article{buchau2017meshfree, author = {Buchau, André and Rucker, Wolfgang M.}, doi = {10.2495/cmem-v5-n5-647-658}, journal = {International Journal of Computational Methods and Experimental Measurements}, month = {06}, number = 5, pages = {647--658}, publisher = {{WITPRESS} {LTD}.}, title = {A meshfree isosurface computation method for boundary element methods}, url = {https://doi.org/10.2495%2Fcmem-v5-n5-647-658}, volume = 5, year = 2017 }
 Link
 https://doi.org/10.2495%2Fcmem-v5-n5-647-658
 DOI
 10.2495/cmem-v5-n5-647-658
5. J. Chi, J. Wagner, J. Anders, and M. Ortmanns, “Digital interferer suppression and jitter reduction in continuous-time bandpass ΣΔ modulators,” in 2017 IEEE International Symposium on Circuits and Systems (ISCAS), May 2017, pp. 1–4. doi: 10.1109/ISCAS.2017.8050482.
 BibTeX
 @inproceedings{8050482, abstract = {Clock jitter sensitivity is a well-known drawback of continuous-time ΣΔ modulators. Although there exist various methods to alleviate the jitter influence, most are only effective in reducing noise incurred by out-of-band quantization noise. However, due to the steadily increasing signal frequency in receiver applications, the dominant jitter influence rather originates from the mixing between the close to in-band interferers and the close-in clock phase noise, either in a mixer or in the DAC of a bandpass ΣΔ modulator. This mixing results in additional in-band noise which cannot be reduced by existing solutions. In this paper, we use a reconfigurable digital filtering method for close to in-band interferer suppression in bandpass ΣΔ modulators, and demonstrate its effectiveness in improving phase noise tolerance through simulation. Additionally, a technique to simplify the implementation of the digital filters is proposed.}, author = {{Chi}, J. and {Wagner}, J. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2017 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2017.8050482}, issn = {2379-447X}, month = {05}, pages = {1-4}, title = {Digital interferer suppression and jitter reduction in continuous-time bandpass ΣΔ modulators}, url = {https://ieeexplore.ieee.org/document/8050482/}, year = 2017 }
 Link
 https://ieeexplore.ieee.org/document/8050482/
 DOI
 10.1109/ISCAS.2017.8050482
6. J. Z. Chi, J. Wagner, J. Anders, and M. Ortmanns, “Digital Interferer Suppression and Jitter Reduction in Continuous-Time Bandpass Sigma Delta Modulators,” 2017 Ieee International Symposium on Circuits and Systems (Iscas), 2017, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000424890101003
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 BibTeX
 @article{RN18, author = {Chi, J. Z. and Wagner, J. and Anders, J. and Ortmanns, M.}, issn = {0271-4302}, journal = {2017 Ieee International Symposium on Circuits and Systems (Iscas)}, title = {Digital Interferer Suppression and Jitter Reduction in Continuous-Time Bandpass Sigma Delta Modulators}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000424890101003}, year = 2017 }
 Link
 /brokenurl#://WOS:000424890101003
7. D. Djekic, G. Fantner, J. Behrends, K. Lips, M. Ortmanns, and J. Anders, “A transimpedance amplifier using a widely tunable PVT-independent pseudo-resistor for high-performance current sensing applications,” in ESSCIRC 2017 - 43rd IEEE European Solid State Circuits Conference, Sep. 2017, pp. 79–82. doi: 10.1109/ESSCIRC.2017.8094530.
 BibTeX
 @inproceedings{8094530, abstract = {In this paper, we present a pseudo-resistor-based transimpedance amplifier (TIA) whose transimpedance value is PVT-independent and continuously tuneable over a wide range. The nonlinearity of the pseudo-resistors is mitigated by connecting a large number of elements in series and the effect of process variations on the pseudo-resistor is canceled by a biasing network based on a pseudo current mirror. The design is also first order temperature compensated exploiting the PTAT behavior of the proposed pseudo-resistor and using a PTAT current reference for its biasing. The proposed architecture is verified using a prototype manufactured in a 0.18 μm CMOS SOI technology. In this prototype, the transimpedance can be adjusted between approximately 1MΩ and 1 GΩ. The achievable bandwidth varies inversely proportional with the transimpedance value from around 7 kHz for a value of 1 GΩ up to an opamp-limited maximum of 2 MHz. In the white region, the input referred noise is equal to that of a TIA using an equivalent ohmic resistor. A minimum value of 5 fA/√Hz is achieved for a transimpedance of 1 GΩ. Over a temperature range from -40 °C to 125 °C, the transimpedance varies less than 10% for 1MΩ. The TIA occupies a chip area of 0.07 mm2. At room temperature, the power consumption is 9.5 mW from a single 1.8 V supply of which the pseudo-resistor consumes 0.2 mW.}, author = {{Djekic}, D. and {Fantner}, G. and {Behrends}, J. and {Lips}, K. and {Ortmanns}, M. and {Anders}, J.}, booktitle = {ESSCIRC 2017 - 43rd IEEE European Solid State Circuits Conference}, doi = {10.1109/ESSCIRC.2017.8094530}, month = {09}, pages = {79-82}, title = {A transimpedance amplifier using a widely tunable PVT-independent pseudo-resistor for high-performance current sensing applications}, url = {https://ieeexplore.ieee.org/document/8094530/}, year = 2017 }
 Link
 https://ieeexplore.ieee.org/document/8094530/
 DOI
 10.1109/ESSCIRC.2017.8094530
8. F. Dreyer et al., “Schottky-Fotodioden basierend auf laserkristallisierten Germanium-Schichten,” in Kleinheubacher Tagung, U.R.S.I. Landesausschuss in der Bundesrepublik Deutschland e.V, Miltenberg, Germany, 2017, pp. KH2017–Di.
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 @inproceedings{dreyer2017, address = {Miltenberg, Germany}, author = {Dreyer, Frederik and Hoppe, Niklas and K{\"o}hler, J{\"u}rgen and Vogel, Wolfgang and Dahlinger, Morris and {F{\'e}lix Rosa}, Mar{\'i}a and Rathgeber, Lotte and Werner, J{\"u}rgen and Berroth, Manfred}, booktitle = {Kleinheubacher Tagung, U.R.S.I. Landesausschuss in der Bundesrepublik Deutschland e.V}, pages = {KH2017-Di-D2-04}, title = {Schottky-Fotodioden basierend auf laserkristallisierten Germanium-Schichten}, year = 2017 }
9. S. Grabmaier, M. Jüttner, and W. M. Rucker, “Coupling of Finite Element Method and Integral Formulation for Vector Helmholtz Equation,” in ISTET, Ilmenau, 2017.
 - BibTeX
 BibTeX
 @inproceedings{grabmaier2017coupling, address = {Ilmenau}, author = {Grabmaier, Sebastian and Jüttner, Matthias and Rucker, Wolfgang M.}, booktitle = {ISTET}, title = {Coupling of Finite Element Method and Integral Formulation for Vector Helmholtz Equation}, year = 2017 }
10. M. Haas, B. Schweizer, J. Anders, and M. Ortmanns, “A miniaturized UWB antenna for implantable data telemetry,” in 2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Jul. 2017, pp. 1086–1089. doi: 10.1109/EMBC.2017.8037016.
 BibTeX
 @inproceedings{8037016, abstract = {This paper presents a miniaturized impulse radio ultra-wideband (IR-UWB) antenna which is designed for transcutaneous, short-distance data communication used in multichannel neural recording. In these systems, with the increasing number of recording channels, data rates of 10-100 Mbit/s must be transmitted with very limited power and area. Therefore, the antennas are designed as planar, ellipsoidal dipoles on a high permittivity substrate with εr = 10.2 to achieve high radiation efficiency with small physical size. In order to increase the robustness against misalignment, a circularly polarized antenna is used at the external receiver unit, reducing the signal power variation under angular misalignment. For the transmitting antenna a miniaturized prototype with an integrated pulse generator was designed on a round shaped PCB with a diameter of only 14mm. Measurements through porcine skin in the frequency domain show an attenuation of less than 30dB in the intended frequency band between 6 and 8.5GHz. Additional evaluations in the time domain prove possible pulse repetition rates of up to 100MHz at a transmission distance of 1.5cm.}, author = {{Haas}, M. and {Schweizer}, B. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)}, doi = {10.1109/EMBC.2017.8037016}, issn = {1558-4615}, month = {07}, pages = {1086-1089}, title = {A miniaturized UWB antenna for implantable data telemetry}, url = {https://ieeexplore.ieee.org/document/8037016/}, year = 2017 }
 Link
 https://ieeexplore.ieee.org/document/8037016/
 DOI
 10.1109/EMBC.2017.8037016
11. J. Handwerker, M. Perez-Rodas, M. Ortmanns, K. Scheffler, and J. Anders, “Towards CMOS-based In-vivo NMR Spectroscopy and Microscopy,” 2017 Ieee International Symposium on Circuits and Systems (Iscas), pp. 2–5, 2017, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000424890100002
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 @article{RN38, author = {Handwerker, J. and Perez-Rodas, M. and Ortmanns, M. and Scheffler, K. and Anders, J.}, issn = {0271-4302}, journal = {2017 Ieee International Symposium on Circuits and Systems (Iscas)}, pages = {2-5}, title = {Towards CMOS-based In-vivo NMR Spectroscopy and Microscopy}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000424890100002}, year = 2017 }
 Link
 /brokenurl#://WOS:000424890100002
12. J. Handwerker, B. Schlecker, M. Ortmanns, and J. Anders, “Integrated Circuit Technology for Next Generation Point-of-Care Spectroscopy Applications,” IEEE Communications Magazine, vol. 55, Art. no. 10, Oct. 2017, doi: 10.1109/MCOM.2017.1700092.
 BibTeX
 @article{8067702, abstract = {Point-of-care personalized medicine and home diagnostics are emerging topics that can help to master the challenges of aging societies. Magnetic resonance spectroscopy is one of the most promising sensing principles because it enables the detection of proteins, metabolites, and reactive oxygen species, which play crucial roles in a large number of diseases, with high specificity. To provide a self-contained introduction to the topic, this article starts with a description of the basic working principle of magnetic resonance spectroscopy, highlighting the similarities and differences compared to conventional impedance spectroscopy methods. Focusing on the two specific techniques of NMR and ESR spectroscopy, we explain how miniaturized systems co-integrating detectors and the signal processing electronics on a single chip are a key enabler for portable, low-cost spectrometry systems. These systems bear many similarities to conventional communication transceivers and can therefore largely benefit from recent advances in communication circuits as well as entirely new detection principles such as VCObased detection, which are enabled by the use of modern nanometer-scaled integrated circuit technologies. An overview of the current state of the art of such miniaturized magnetic resonance spectrometers is presented, which both highlights the excellent new possibilities associated with these systems and at the same time outlines the current challenges and future research directions in this emerging field of research.}, author = {{Handwerker}, J. and {Schlecker}, B. and {Ortmanns}, M. and {Anders}, J.}, doi = {10.1109/MCOM.2017.1700092}, issn = {1558-1896}, journal = {IEEE Communications Magazine}, month = {10}, number = 10, pages = {143-151}, title = {Integrated Circuit Technology for Next Generation Point-of-Care Spectroscopy Applications}, url = {https://ieeexplore.ieee.org/document/8067702/}, volume = 55, year = 2017 }
 Link
 https://ieeexplore.ieee.org/document/8067702/
 DOI
 10.1109/MCOM.2017.1700092
13. S. A. Jawed, S. S. Afridi, M. A. Anjum, and K. Khan, “IO circuit design for 2.5 D through-silicon-interposer interconnects,” International Journal of Circuit Theory and Applications, vol. 45, Art. no. 3, 2017.
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 @article{jawed2017io, author = {Jawed, Syed Arsalan and Afridi, Sohaib Saadat and Anjum, Muhammad Arslan and Khan, Khubaib}, journal = {International Journal of Circuit Theory and Applications}, number = 3, pages = {376--391}, publisher = {Wiley Online Library}, title = {IO circuit design for 2.5 D through-silicon-interposer interconnects}, volume = 45, year = 2017 }
14. S. A. Jawed et al., “A configurable 2-Gbps LVDS transceiver in 150-nm CMOS with pre-emphasis, equalization, and slew rate control,” International Journal of Circuit Theory and Applications, vol. 45, Art. no. 10, 2017.
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 BibTeX
 @article{jawed2017configurable, author = {Jawed, Syed Arsalan and Asghar, Ali and Khan, Khubaib and Abbasi, Shahbaz and Naveed, Muhammad and Siddiqi, Yasir and Siddiqi, Waqas}, journal = {International Journal of Circuit Theory and Applications}, number = 10, pages = {1369--1381}, publisher = {Wiley Online Library}, title = {A configurable 2-Gbps LVDS transceiver in 150-nm CMOS with pre-emphasis, equalization, and slew rate control}, volume = 45, year = 2017 }
15. M. Jüttner et al., “A Distributed Method for Transient Simulations that Dynamically Considers Suplementary Results from Autonomous Software Agents,” in ISTET, Ilmenau, 2017.
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 BibTeX
 @inproceedings{juttner2017distributed, address = {Ilmenau}, author = {Jüttner, Matthias and Grabmaier, Sebastian and Rohloff, Jonas and Vögeli, Desirée and Rucker, Wolfgang M. and Göhner, Peter and Weyrich, Michael}, booktitle = {ISTET}, title = {A Distributed Method for Transient Simulations that Dynamically Considers Suplementary Results from Autonomous Software Agents}, year = 2017 }
16. A. V. Matheoud et al., “Single-chip electron spin resonance detectors operating at 50 GHz, 92 GHz, and 146 GHz,” Journal of Magnetic Resonance, vol. 278, pp. 113–121, 2017, doi: 10.1016/j.jmr.2017.03.013.
 BibTeX
 @article{RN58, author = {Matheoud, A. V. and Gualco, G. and Jeong, M. and Zivkovic, I. and Brugger, J. and Ronnow, H. M. and Anders, J. and Boero, G.}, doi = {10.1016/j.jmr.2017.03.013}, issn = {1090-7807}, journal = {Journal of Magnetic Resonance}, pages = {113-121}, title = {Single-chip electron spin resonance detectors operating at 50 GHz, 92 GHz, and 146 GHz}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000400723900013}, volume = 278, year = 2017 }
 Link
 /brokenurl#://WOS:000400723900013
 DOI
 10.1016/j.jmr.2017.03.013
17. I. Nemec, R. Herchel, M. Kern, P. Neugebauer, J. van Slageren, and Z. Trávnícek, “Magnetic anisotropy and field-induced slow relaxation of magnetization in tetracoordinate Co$^II$ compound Co(CH$_3$(-im)$_2$Cl$_2$,” Materials, vol. 10, Art. no. 3, 2017, doi: 10.3390/ma10030249.
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 BibTeX
 @article{Nemec2017a, abstract = {Static and dynamic magnetic properties of the tetracoordinate CoII complex [Co(CH3-im)2Cl2], (1, CH3-im = N-methyl-imidazole), studied using thorough analyses of magnetometry, and High-Frequency and -Field EPR (HFEPR) measurements, are reported. The study was supported by ab initio complete active space self-consistent field (CASSCF) calculations. It has been revealed that 1 possesses a large magnetic anisotropy with a large rhombicity (magnetometry: D = -13.5 cm-1, E/D = 0.33; HFEPR: D = -14.5(1) cm-1, E/D = 0.16(1)). These experimental results agree well with the theoretical calculations (D = -11.2 cm-1, E/D = 0.18). Furthermore, it has been revealed that 1 behaves as a field-induced single-ion magnet with a relatively large spin-reversal barrier (Ueff = 33.5 K). The influence of the Cl-Co-Cl angle on magnetic anisotropy parameters was evaluated using the CASSCF calculations.}, author = {Nemec, Ivan and Herchel, Radovan and Kern, Michal and Neugebauer, Petr and van Slageren, Joris and Tr{\'{a}}vn{\'{i}}{\v{c}}ek, Zden{\v{e}}k}, doi = {10.3390/ma10030249}, file = {:P$\backslash$:/Work-Archive/Papers/DC39/materials-10-00249-v3.pdf:pdf}, issn = {19961944}, journal = {Materials}, number = 3, pages = {1--14}, title = {Magnetic anisotropy and field-induced slow relaxation of magnetization in tetracoordinate Co$^{II}$ compound [Co(CH$_3$(-im)$_2$Cl$_2$]}, volume = 10, year = 2017 }
 DOI
 10.3390/ma10030249
18. M. Ostroushko, A. Buchau, and W. M. Rucker, “Design and simulation of the electromagnetic heating of a biological tissue,” COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING, vol. 36, Art. no. 2, 2017, doi: 10.1108/COMPEL-05-2016-0220.
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 @article{ostroushko2017design, affiliation = {Ostroushko, M (Reprint Author), Univ Stuttgart, Inst Theory Elect Engn, Stuttgart, Germany. Ostroushko, Mykola; Buchau, Andre; Rucker, Wolfgang, Univ Stuttgart, Inst Theory Elect Engn, Stuttgart, Germany.}, author = {Ostroushko, Mykola and Buchau, André and Rucker, Wolfgang M.}, da = {2018-07-20}, doi = {10.1108/COMPEL-05-2016-0220}, issn = {0332-1649}, journal = {COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING}, language = {English}, number = 2, pages = {408-416}, publisher = {EMERALD GROUP PUBLISHING LTD}, research-areas = {Computer Science; Engineering; Mathematics}, title = {Design and simulation of the electromagnetic heating of a biological tissue}, type = {Publication}, unique-id = {ISI:000399047400003}, volume = 36, year = 2017 }
 DOI
 10.1108/COMPEL-05-2016-0220
19. B. Schlecker et al., “VCO-based ESR-on-a-chip as a tool for low-cost, high-sensitivity point-of-care diagnostics,” 2017 Ieee Sensors, pp. 88–90, 2017, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000427677500030
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 @article{RN53, author = {Schlecker, B. and Chu, A. and Handwerker, J. and Kunstner, S. and Ortmanns, M. and Lips, K. and Anders, J.}, issn = {1930-0395}, journal = {2017 Ieee Sensors}, pages = {88-90}, title = {VCO-based ESR-on-a-chip as a tool for low-cost, high-sensitivity point-of-care diagnostics}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000427677500030}, year = 2017 }
 Link
 /brokenurl#://WOS:000427677500030
20. B. Schlecker et al., “Live Demonstration: A VCO-based point-of-care ESR spectrometer,” 2017 Ieee Sensors, p. 473, 2017, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000427677500163
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 @article{RN52, author = {Schlecker, B. and Chu, A. and Handwerker, J. and Kunstner, S. and Ortmanns, M. and Lips, K. and Anders, J.}, issn = {1930-0395}, journal = {2017 Ieee Sensors}, pages = {473-473}, title = {Live Demonstration: A VCO-based point-of-care ESR spectrometer}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000427677500163}, year = 2017 }
 Link
 /brokenurl#://WOS:000427677500163
21. D. Vögeli et al., “Softwareagenten zur zuverlässigen Durchführung dezentraler multiphysikalischer Simulationen,” at - Automatisierungstechnik, vol. 65, Art. no. 11, Nov. 2017, doi: 10.1515/auto-2017-0065.
 BibTeX
 @article{vogeli2017softwareagenten, abstract = {Zur Ermittlung des Systemverhaltens werden beim Engineering in Kombination mit der modellgestützten Entwicklung häufig Simulationen eingesetzt. Dieser Beitrag stellt einen agentenkoordinierten Ansatz für die parallele Simulation von multiphysikalischen Problemstellungen auf heterogenen Rechenressourcen vor. Durch die unterschiedlichen eingesetzten Simulationsmethoden steigt hierbei die Zuverlässigkeit beim Erreichen der Ergebnisse.}, author = {Vögeli, Desirée and Jazdi, Nasser and Grabmaier, Sebastian and Jüttner, Matthias and Weyrich, Michael and Göhner, Peter and Rucker, Wolfgang M.}, doi = {10.1515/auto-2017-0065}, issn = {2196-677X}, journal = {at - Automatisierungstechnik}, month = {11}, number = 11, pages = { 793-803}, title = {Softwareagenten zur zuverlässigen Durchführung dezentraler multiphysikalischer Simulationen}, url = {http://doi.org/10.1515/auto-2017-0065}, volume = 65, year = 2017 }
 Link
 http://doi.org/10.1515/auto-2017-0065
 DOI
 10.1515/auto-2017-0065
22. M. Wick, M. Jüttner, and W. M. Rucker, “Harmonic balanced Jiles-Atherton hysteresis implementation for finite element simulation,” Compel : international journal for computation and mathematics in electrical and electronic engineering, vol. 36, Art. no. 5, 2017, doi: 10.1108/COMPEL-02-2017-0098.
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 @article{wick2017harmonic, affiliation = {Wick, M (Reprint Author), Univ Stuttgart, Inst Theory Elect Engn, Stuttgart, Germany. Wick, Markus; Juettner, Matthias; Rucker, Wolfgang M., Univ Stuttgart, Inst Theory Elect Engn, Stuttgart, Germany.}, author = {Wick, Markus and Jüttner, Matthias and Rucker, Wolfgang M.}, doi = {10.1108/COMPEL-02-2017-0098}, issn = {0332-1649}, journal = {Compel : international journal for computation and mathematics in electrical and electronic engineering}, language = {eng}, number = 5, pages = {1386-1395}, publisher = {Emerald}, research-areas = {Computer Science; Engineering; Mathematics}, title = {Harmonic balanced Jiles-Atherton hysteresis implementation for finite element simulation}, unique-id = {ISI:000412359000006}, volume = 36, year = 2017 }
 DOI
 10.1108/COMPEL-02-2017-0098
23. D. Yasser, M. A. ElGamal, M. Atef, O. Hamada, A. H. Hassan, and H. Mostafa, “A comparative analysis of optimized low-power comparators for biomedical-ADCs,” in 2017 29th International Conference on Microelectronics (ICM), 2017, pp. 1–4.
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 @inproceedings{8268879, author = {{Yasser}, D. and {ElGamal}, M. A. and {Atef}, M. and {Hamada}, O. and {Hassan}, A. H. and {Mostafa}, H.}, booktitle = {2017 29th International Conference on Microelectronics (ICM)}, pages = {1-4}, title = {A comparative analysis of optimized low-power comparators for biomedical-ADCs}, year = 2017 }
2016
1. A. AlMarashli, J. Anders, and M. Ortmanns, “A hybrid comparator for high resolution SAR ADC,” in 2016 IEEE International Symposium on Circuits and Systems (ISCAS), May 2016, pp. 1050–1053. doi: 10.1109/ISCAS.2016.7527424.
 BibTeX
 @inproceedings{7527424, abstract = {Together with the increasingly demanding DAC, the design of the comparator introduces a big challenge for the implementation of high resolution SAR ADCs. Therefore, several state of the art works investigated improved comparator architectures aiming for higher resolution. However, those architectures in most cases resulted either in excessive power consumption or compromised conversion speed. For improved performance and power efficiency this paper proposes the use of two dynamic comparators in a 14-bit SAR ADC. The first coarse decisions are made by a low power comparator, while the second comparator applies an automatic noise reduction technique to perform accurate decisions around the LSB. The proposal includes SAR conversion which applies two switching schemes a monotonic and a differential one. The design is partially implemented and simulated on transistor level using a 40 nm CMOS technology. The ADC is operated with a sampling frequency of 1.6 MS/s and features an SNDR above 81 dB and an SFDR above 97 dB. The estimated power consumption of the two comparators is 44 μW and about 27 μW for the DAC reference.}, author = {{AlMarashli}, A. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2016 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2016.7527424}, issn = {2379-447X}, month = {05}, pages = {1050-1053}, title = {A hybrid comparator for high resolution SAR ADC}, url = {https://ieeexplore.ieee.org/document/7527424/;jsessionid=SrwWseLuzSHViZUHaGwRUwjRNfXcVjC7KVnbpRuN5b1NqNp-f4K-!794090673?reason=concurrency}, year = 2016 }
 Link
 https://ieeexplore.ieee.org/document/7527424/;jsessionid=SrwWseLuzSHViZUHaGwRUwjRNfXcVjC7KVnbpRuN5b1NqNp-f4K-!794090673?reason=concurrency
 DOI
 10.1109/ISCAS.2016.7527424
2. J. Anders, J. Handwerker, M. Ortmanns, and G. Boero, “A low-power high-sensitivity single-chip receiver for NMR microscopy,” Journal of Magnetic Resonance, vol. 266, pp. 41–50, 2016, doi: 10.1016/j.jmr.2016.03.004.
 BibTeX
 @article{RN8, author = {Anders, J. and Handwerker, J. and Ortmanns, M. and Boero, G.}, doi = {10.1016/j.jmr.2016.03.004}, issn = {1090-7807}, journal = {Journal of Magnetic Resonance}, pages = {41-50}, title = {A low-power high-sensitivity single-chip receiver for NMR microscopy}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000375510100005}, volume = 266, year = 2016 }
 Link
 /brokenurl#://WOS:000375510100005
 DOI
 10.1016/j.jmr.2016.03.004
3. J. Becker, J. Anders, and M. Ortmanns, “A Continuous-Time Field Programmable Analog Array with 1 GHz GBW,” 23rd Ieee International Conference on Electronics Circuits and Systems (Icecs 2016), pp. 209–212, 2016, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000399230200053
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 BibTeX
 @article{RN11, author = {Becker, J. and Anders, J. and Ortmanns, M.}, journal = {23rd Ieee International Conference on Electronics Circuits and Systems (Icecs 2016)}, pages = {209-212}, title = {A Continuous-Time Field Programmable Analog Array with 1 GHz GBW}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000399230200053}, year = 2016 }
 Link
 /brokenurl#://WOS:000399230200053
4. J. Chi, R. Ritter, J. Wagner, J. Anders, and M. Ortmanns, “Phase noise vs. jitter analysis in continuous-time LP and BP ΣΔ modulators with interferers,” in 2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS), Dec. 2016, pp. 476–479. doi: 10.1109/ICECS.2016.7841242.
 BibTeX
 @inproceedings{7841242, abstract = {Continuous-time (CT) ΣΔ modulators are well-known for their sensitivity to jitter. This paper intends to compare and clarify the effect of both colored phase noise and white jitter as measures for non-ideal clocks on the performance of CT ΣΔ modulators, which becomes of utmost importance under the influence of strong out-of-band (OOB) interferers. The jitter-induced noise is shown to be a convolution in the frequency domain between the clock phase noise and the CT derivative of the modulator output. Simulations on lowpass and bandpass modulators show that depending on the shape of the phase noise, the SNR of the modulator is limited by the input signal or the quantization noise. In the scenario where the SNR is limited by the input signal, techniques regarding feedback DAC waveforms cannot reduce the impact of jitter, and the SNR is further reduced in the presence of OOB interferers. Consequently, a realistic clock phase noise should be specified to allow frequency-domain analysis and thus an accurate estimation on the output spectrum and performance of CT ΣΔ modulators. Moreover, interferer attenuation techniques should be applied to reduce the clock jitter influence.}, author = {{Chi}, J. and {Ritter}, R. and {Wagner}, J. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS)}, doi = {10.1109/ICECS.2016.7841242}, month = {12}, pages = {476-479}, title = {Phase noise vs. jitter analysis in continuous-time LP and BP ΣΔ modulators with interferers}, url = {https://ieeexplore.ieee.org/document/7841242/}, year = 2016 }
 Link
 https://ieeexplore.ieee.org/document/7841242/
 DOI
 10.1109/ICECS.2016.7841242
5. J. Z. Chi, R. Ritter, J. Wagner, J. Anders, and M. Ortmanns, “Phase Noise vs. Jitter Analysis in Continuous-Time LP and BP Sigma triangle Modulators with Interferers,” 23rd Ieee International Conference on Electronics Circuits and Systems (Icecs 2016), pp. 476–479, 2016, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000399230200125
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 BibTeX
 @article{RN17, author = {Chi, J. Z. and Ritter, R. and Wagner, J. and Anders, J. and Ortmanns, M.}, journal = {23rd Ieee International Conference on Electronics Circuits and Systems (Icecs 2016)}, pages = {476-479}, title = {Phase Noise vs. Jitter Analysis in Continuous-Time LP and BP Sigma triangle Modulators with Interferers}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000399230200125}, year = 2016 }
 Link
 /brokenurl#://WOS:000399230200125
6. D. Djekic, M. Ortmanns, G. Fantner, and J. Anders, “A Tunable, Robust Pseudo-Resistor with Enhanced Linearity for Scanning Ion-Conductance Microscopy,” 2016 Ieee International Symposium on Circuits and Systems (Iscas), pp. 842–845, 2016, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000390094700218
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 BibTeX
 @article{RN24, author = {Djekic, D. and Ortmanns, M. and Fantner, G. and Anders, J.}, issn = {0271-4302}, journal = {2016 Ieee International Symposium on Circuits and Systems (Iscas)}, pages = {842-845}, title = {A Tunable, Robust Pseudo-Resistor with Enhanced Linearity for Scanning Ion-Conductance Microscopy}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000390094700218}, year = 2016 }
 Link
 /brokenurl#://WOS:000390094700218
7. M. Dörfel et al., “Torque-Detected Electron Spin Resonance as a Tool to Investigate Magnetic Anisotropy in Molecular Nanomagnets,” Magnetochemistry, vol. 2, Art. no. 2, 2016, doi: 10.3390/magnetochemistry2020025.
 BibTeX
 @article{magnetochemistry2020025, abstract = {The method of choice for in-depth investigation of the magnetic anisotropy in molecular nanomagnets is high-frequency electron spin resonance (HFESR) spectroscopy. It has the benefits of high resolution and facile access to large energy splittings. However, the sensitivity is limited to about 107 spins for a reasonable data acquisition time. In contrast, methods based on the measurement of the deflection of a cantilever were shown to enable single spin magnetic resonance sensitivity. In the area of molecular nanomagnets, the technique of torque detected electron spin resonance (TDESR) has been used sporadically. Here, we explore the applicability of that technique by investigating molecular nanomagnets with different types of magnetic anisotropy. We also assess different methods for the detection of the magnetic torque. We find that all types of samples are amenable to these studies, but that sensitivities do not yet rival those of HFESR.}, author = {Dörfel, María and Kern, Michal and Bamberger, Heiko and Neugebauer, Petr and Bader, Katharina and Marx, Raphael and Cornia, Andrea and Mitra, Tamoghna and Müller, Achim and Dressel, Martin and Bogani, Lapo and van Slageren, Joris}, doi = {10.3390/magnetochemistry2020025}, issn = {2312-7481}, journal = {Magnetochemistry}, number = 2, pages = 25, title = {Torque-Detected Electron Spin Resonance as a Tool to Investigate Magnetic Anisotropy in Molecular Nanomagnets}, url = {http://www.mdpi.com/2312-7481/2/2/25}, volume = 2, year = 2016 }
 Link
 http://www.mdpi.com/2312-7481/2/2/25
 DOI
 10.3390/magnetochemistry2020025
8. A. Elkafrawy, J. Anders, and M. Ortmanns, “Design and validation of a 10-bit current mode SAR ADC with 58.4 dB SFDR at 50 MS/s in 90 nm CMOS,” Analog Integrated Circuits and Signal Processing, vol. 89, Art. no. 2, 2016, doi: 10.1007/s10470-016-0788-z.
 BibTeX
 @article{RN30, author = {Elkafrawy, A. and Anders, J. and Ortmanns, M.}, doi = {10.1007/s10470-016-0788-z}, issn = {0925-1030}, journal = {Analog Integrated Circuits and Signal Processing}, number = 2, pages = {283-295}, title = {Design and validation of a 10-bit current mode SAR ADC with 58.4 dB SFDR at 50 MS/s in 90 nm CMOS}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000387770900003}, volume = 89, year = 2016 }
 Link
 /brokenurl#://WOS:000387770900003
 DOI
 10.1007/s10470-016-0788-z
9. S. Grabmaier, H. Li, M. Jüttner, and W. M. Rucker, “Efficient Magnetic Field Calculation based on a novel Domain Decomposition Approach,” in 17th International IGTE Symposium, Graz, Austria, 2016, pp. 102–108.
 - BibTeX
 BibTeX
 @inproceedings{grabmaier2016efficient, address = {Graz, Austria}, author = {Grabmaier, Sebastian and Li, Hua and Jüttner, Matthias and Rucker, Wolfgang M.}, booktitle = {17th International IGTE Symposium}, pages = {102-108}, title = {Efficient Magnetic Field Calculation based on a novel Domain Decomposition Approach}, year = 2016 }
10. M. Haas, J. Anders, and M. Ortmanns, “A bidirectional neural interface featuring a tunable recorder and electrode impedance estimation,” in 2016 IEEE Biomedical Circuits and Systems Conference (BioCAS), Oct. 2016, pp. 372–375. doi: 10.1109/BioCAS.2016.7833809.
 BibTeX
 @inproceedings{7833809, abstract = {This paper presents an improved, bi-directional neural interface with a tunable lower cut-off frequency and an online electrode impedance estimation. Each channel features a low voltage (LV) recorder and a high voltage (HV) stimulator, separated by a HV protection network. The recorder utilizes a 3-Bit switched capacitor (SC), serial DAC to adjust the resistance of a MOS-bipolar pseudo-resistor in the neural recorder. Thereby, its lower cut-off frequency can be adjusted between 15mHz and 70 Hz, with a logarithmic scaling. Additionally a low-gain mode is implemented which together with the HV stimulator allows for an estimation of the electrode impulse response. From this impulse response the parameters of a simplified electrode model can be calculated, with a simulated accuracy of ±15%. A single channel prototype has been layouted and is currently manufactured in a 180 nm HV CMOS technology. The prototype occupies an area of 715 μm × 580 μm. It has a simulated power consumption of 58 μW per channel of which 11 μW are consumed in the tunable Low Noise Amplifier (LNA). The simulated, input referred noise of the LNA ranges between 3.2 μVrms (70 Hz-7.5 kHz) and 4.5 μVrms (0.1 Hz-7.5 kHz) depending on the adjusted value of the lower cut-off frequency.}, author = {{Haas}, M. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2016 IEEE Biomedical Circuits and Systems Conference (BioCAS)}, doi = {10.1109/BioCAS.2016.7833809}, month = {10}, pages = {372-375}, title = {A bidirectional neural interface featuring a tunable recorder and electrode impedance estimation}, url = {https://ieeexplore.ieee.org/document/7833809/}, year = 2016 }
 Link
 https://ieeexplore.ieee.org/document/7833809/
 DOI
 10.1109/BioCAS.2016.7833809
11. M. Haas, U. Bihr, J. Anders, and M. Ortmanns, “A bidirectional neural interface IC with high voltage compliance and spectral separation,” in 2016 IEEE International Symposium on Circuits and Systems (ISCAS), May 2016, pp. 2743–2746. doi: 10.1109/ISCAS.2016.7539160.
 BibTeX
 @inproceedings{7539160, abstract = {This paper presents a fully integrated, bidirectional, neural interface, which is composed of a high voltage (HV) stimulator and a low voltage (LV) neural front-end with active, spectral separation. The stimulator uses a supply of ±9V in order to achieve a high voltage compliance (VC), whereas the recorder has a supply voltage of 3 V for high power efficiency. By using a HV transistor to separate the two parts, a safe operation of stimulator and recorder with different supply voltages can be guaranteed. Thereby the presented architecture can deliver a maximum stimulation current of ±10mA with a dynamic range of 50 dB and a VC of ±8.2 V. The implemented recording part consumes 52 μW and achieves a simulated input referred noise of 2.5μVrms in the low frequency band from 0.1 Hz to 200 Hz and 3.1 μVrms in the high frequency band from 200 Hz to 7.5 kHz. The combined recorder/stimulator requires 0.378 mm2 per channel. A prototype of the interface has been implemented and manufactured in a standard 0.18 μm HV CMOS technology.}, author = {{Haas}, M. and {Bihr}, U. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2016 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2016.7539160}, issn = {2379-447X}, month = {05}, pages = {2743-2746}, title = {A bidirectional neural interface IC with high voltage compliance and spectral separation}, url = {https://ieeexplore.ieee.org/document/7539160/?arnumber=7539160&tag=1}, year = 2016 }
 Link
 https://ieeexplore.ieee.org/document/7539160/?arnumber=7539160&tag=1
 DOI
 10.1109/ISCAS.2016.7539160
12. J. Handwerker et al., “An Array of Fully-Integrated Quadrature TX/RX NMR Field Probes for MRI Trajectory Mapping,” Esscirc Conference 2016, pp. 217–220, 2016, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000386656300052
 - BibTeX
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 BibTeX
 @article{RN36, author = {Handwerker, J. and Eder, M. and Tibiletti, M. and Rasche, V. and Scheffler, K. and Becker, J. and Ortmanns, M. and Anders, J.}, issn = {1930-8833}, journal = {Esscirc Conference 2016}, pages = {217-220}, title = {An Array of Fully-Integrated Quadrature TX/RX NMR Field Probes for MRI Trajectory Mapping}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000386656300052}, year = 2016 }
 Link
 /brokenurl#://WOS:000386656300052
13. J. Handwerker, B. Schlecker, U. Wachter, P. Radermacher, M. Ortmanns, and J. Anders, “28.2 A 14GHz battery-operated point-of-care ESR spectrometer based on a 0.13µm CMOS ASIC,” in 2016 IEEE International Solid-State Circuits Conference (ISSCC), Jan. 2016, pp. 476–477. doi: 10.1109/ISSCC.2016.7418114.
 BibTeX
 @inproceedings{7418114, abstract = {Thanks to its unique ability to deliver information about the structure, spatial distribution, and even dynamics of paramagnetic species, electron spin resonance (ESR) spectroscopy is one of the most powerful analytical techniques in modern life sciences. Recently, the method has gained significant attention as a tool to study oxidative stress, i.e., a state in which the number of reactive oxygen species (ROS) exceeds the physiological antioxidative potential of the cells, which plays an important role in the development of many chronic diseases as well as acute stress conditions.}, author = {{Handwerker}, J. and {Schlecker}, B. and {Wachter}, U. and {Radermacher}, P. and {Ortmanns}, M. and {Anders}, J.}, booktitle = {2016 IEEE International Solid-State Circuits Conference (ISSCC)}, doi = {10.1109/ISSCC.2016.7418114}, issn = {2376-8606}, month = {01}, pages = {476-477}, title = {28.2 A 14GHz battery-operated point-of-care ESR spectrometer based on a 0.13µm CMOS ASIC}, url = {https://ieeexplore.ieee.org/document/7418114/}, year = 2016 }
 Link
 https://ieeexplore.ieee.org/document/7418114/
 DOI
 10.1109/ISSCC.2016.7418114
14. J. Handwerker, B. Schlecker, U. Wachter, P. Radermacher, M. Ortmanns, and J. Anders, “A 14GHz Battery-Operated Point-of-Care ESR Spectrometer Based on a 0.13 mu m CMOS ASIC,” 2016 Ieee International Solid-State Circuits Conference (Isscc), vol. 59, pp. 476–U670, 2016, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000382151400198
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 BibTeX
 @article{RN40, author = {Handwerker, J. and Schlecker, B. and Wachter, U. and Radermacher, P. and Ortmanns, M. and Anders, J.}, issn = {0193-6530}, journal = {2016 Ieee International Solid-State Circuits Conference (Isscc)}, pages = {476-U670}, title = {A 14GHz Battery-Operated Point-of-Care ESR Spectrometer Based on a 0.13 mu m CMOS ASIC}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000382151400198}, volume = 59, year = 2016 }
 Link
 /brokenurl#://WOS:000382151400198
15. M. Jüttner, A. Buchau, D. Vögeli, W. M. Rucker, and P. Göhner, “Iterative Software Agent Based Solution of Multiphysics Problems,” in Scientific Computing in Electrical Engineering, A. Bartel, M. Clemens, M. Günther, and E. J. W. ter Maten, Eds., Cham: Springer International Publishing, 2016, pp. 123–131.
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 BibTeX
 @inproceedings{10.1007/978-3-319-30399-4_13, abstract = {A novel approach is presented using software agents for an iterative and distributed solution of multiphysics problems. Overall convergence is achieved by using the individual capabilities of interworking agents. Every agent solves a partial single physics problem based on specialized, commercial or in-house code. The autonomy of each agent allows a physics adapted solution process without the need of a predefined solver sequence. The applied software agents are described in detail. Here, we focus on weak uni- and bidirectional field coupled multiphysics problems. This framework can also be used for node or boundary coupling as well as for optimising partial physics simulation. A coupled 3D electromagnetic wave propagation and heat transfer problem inside a waveguide is examined as numerical example.}, address = {Cham}, author = {J{\"u}ttner, Matthias and Buchau, Andr{\'e} and V{\"o}geli, Desir{\'e}e and Rucker, Wolfgang M. and G{\"o}hner, Peter}, booktitle = {Scientific Computing in Electrical Engineering}, editor = {Bartel, Andreas and Clemens, Markus and G{\"u}nther, Michael and ter Maten, E. Jan W.}, isbn = {978-3-319-30399-4}, pages = {123--131}, publisher = {Springer International Publishing}, title = {Iterative Software Agent Based Solution of Multiphysics Problems}, year = 2016 }
16. M. Jüttner, S. Grabmaier, D. Vögeli, W. M. Rucker, and P. Göhner, “Coupled Multiphysics Problems as Market Place for Competing Autonomous Software Agents,” in 17th Biennial Conference on Electromagnetic Field Computation (CEFC) 13.-16.11.2016 Florida, USA, IEEE, 2016. doi: 10.1109/CEFC.2016.7815942.
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 BibTeX
 @inproceedings{juttner2016coupled, abstract = {A novel approach is presented applying capabilities of software agent based programming to numerical field computations. Distributed and autonomous calculation resources are used in analogy to a machine to machine system application for setting up and solve coupled simulations respecting the individual machine capabilities. Within the presented system the involved machines interact cooperatively and comparatively. Redundant resources do automatically and proactively add variance to the solution process by modifying their partial tasks based on negotiations between the involved resources. In that way different numerical methods, solution strategies and solver configurations are automatically evaluated as examples of the variety of coupled simulations and dynamically integrated into an overall solver sequence shown for the coupled electric field computation of a patch antenna array. A quick provision of results contemplating changes at calculation resource and vague user decisions is shown for a nonlinear and bi-directionally coupled simulation of a 3d multiphysics problem.}, author = {Jüttner, Matthias and Grabmaier, Sebastian and Vögeli, Desirée and Rucker, Wolfgang M. and Göhner, Peter}, booktitle = {17th Biennial Conference on Electromagnetic Field Computation (CEFC) 13.-16.11.2016 Florida, USA}, doi = {10.1109/CEFC.2016.7815942}, publisher = {IEEE}, title = {Coupled Multiphysics Problems as Market Place for Competing Autonomous Software Agents}, year = 2016 }
 DOI
 10.1109/CEFC.2016.7815942
17. R. Koerner et al., “The Zener-Emitter: A novel superluminescent Ge optical waveguide-amplifier with 4.7 dB gain at 92 mA based on free-carrier modulation by direct Zener tunneling monolithically integrated on Si,” in 2016 IEEE International Electron Devices Meeting (IEDM), Dec. 2016, p. 22. doi: 10.1109/IEDM.2016.7838474.
 BibTeX
 @inproceedings{7838474, abstract = {We report on the first experimental demonstration of a monolithic integrated Group-IV Ge semiconductor optical amplifier (SOA) - the Ge Zener-Emitter (ZE). The ZE is a device featuring light amplification up to 4.7 dB (92 mA) at center wavelength of 1700 nm and gain-bandwidth of 98 nm on Si (100). Our novel direct Zener band-to-band tunneling (BTBT) injection method enables low-voltage electron emission beyond the Boltzmann-limit (38 mV/dec at 1.55 K, 88 mV/dec at 300 K), achieving population-inversion at 0.45 V (41 mA). The ZE possesses a Si-Ge-Si hetero-structure with excellent CMOS integration compatibility by planar device design (550 nm) and an ultra-thin (100 nm) Ge virtual substrate (VS) on Si (100). Moreover, the ZE shows superior light emission properties with pulsed lasing at 1667 nm and superluminescent LED characteristic (150 cm-1 max. gain at 270 K, 100 cm-1 max. gain at 300 k). The developed ZE device presents a promising feature to monolithic Si-photonics filling the gap for energy-efficient light emission and amplification in a small footprint (1 mm) integrated waveguide-amplifier.}, author = {{Koerner}, R. and {Schwaiz}, D. and {Fischer}, I. A. and {Augel}, L. and {Bechler}, S. and {Haenel}, L. and {Kern}, M. and {Oehme}, M. and {Rolseth}, E. and {Schwartz}, B. and {Weisshaupt}, D. and {Zhang}, W. and {Schulze}, J.}, booktitle = {2016 IEEE International Electron Devices Meeting (IEDM)}, doi = {10.1109/IEDM.2016.7838474}, issn = {2156-017X}, month = {12}, pages = {22.5.1-22.5.4}, title = {The Zener-Emitter: A novel superluminescent Ge optical waveguide-amplifier with 4.7 dB gain at 92 mA based on free-carrier modulation by direct Zener tunneling monolithically integrated on Si}, url = {https://ieeexplore.ieee.org/document/7838474/}, year = 2016 }
 Link
 https://ieeexplore.ieee.org/document/7838474/
 DOI
 10.1109/IEDM.2016.7838474
18. H. Li and W. M. Rucker, “A Hybrid Method for the Calculation of the Inductances of Coils with and without deformed Turns,” COMPEL, vol. 35, Art. no. 4, 2016.
 - BibTeX
 BibTeX
 @article{li2016hybrid, author = {Li, Hua and Rucker, Wolfgang M.}, journal = {COMPEL}, number = 4, title = {A Hybrid Method for the Calculation of the Inductances of Coils with and without deformed Turns}, volume = 35, year = 2016 }
19. H. Li and W. M. Rucker, “An Accurate and Efficient Hybrid Method for the Calculation of the Equivalent Capacitance of an Arbitrary-Shaped Coil,” IEEE Transactions on Magnetics, vol. 52, Art. no. 3, Mar. 2016.
 - BibTeX
 BibTeX
 @article{li2016accurate, author = {Li, Hua and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, month = {03}, number = 3, title = {An Accurate and Efficient Hybrid Method for the Calculation of the Equivalent Capacitance of an Arbitrary-Shaped Coil}, volume = 52, year = 2016 }
20. A. S. Sakr, A. H. Madian, and S. H. Ismail, “Full implementation of a capacitance-to-digital converter system based on SAR logic and charge redistribution technique,” in 2016 28th International Conference on Microelectronics (ICM), Dec. 2016, pp. 245–248. doi: 10.1109/ICM.2016.7847861.
 BibTeX
 @inproceedings{7847861, abstract = {This paper demonstrates a low power 6-bit single-ended voltage-based Capacitance-to-Digital Converter (CDC) circuit based on a charge redistribution technique and Successive Approximation Register (SAR) logic operating at 370 kHz sampling rate. A proposed realization of a SAR logic control unit integrated with a low power comparator is introduced where the system blocks are entirely built on the transistor level. The system, which is fully automated with a universal clock signal, is tested for real time Cadence simulations using a 130nm model from which static and dynamic parameters are extracted. The average static and dynamic current consumption becomes in the order of 200μA using a 1.2V power supply. The tested specifications are compared with a similar CDC implementation and proved an overall enhancement and superiority on both power consumption and conversion rate performance metrics.}, author = {{Sakr}, A. S. and {Madian}, A. H. and {Ismail}, S. H.}, booktitle = {2016 28th International Conference on Microelectronics (ICM)}, doi = {10.1109/ICM.2016.7847861}, month = {12}, pages = {245-248}, title = {Full implementation of a capacitance-to-digital converter system based on SAR logic and charge redistribution technique}, url = {https://ieeexplore.ieee.org/document/7847861/}, year = 2016 }
 Link
 https://ieeexplore.ieee.org/document/7847861/
 DOI
 10.1109/ICM.2016.7847861
21. J. Wagner, S. Reich, R. Ritter, J. Anders, and M. Ortmanns, “Finite GBW in single OpAmp CT ΣΔ modulators,” in 2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS), Dec. 2016, pp. 468–471. doi: 10.1109/ICECS.2016.7841240.
 BibTeX
 @inproceedings{7841240, abstract = {This paper presents a comparison study on single-OpAmp resonators applied in ΣΔ modulators under the influence of nonidealities. In the recent state-of-the-art, single amplifier resonators have been proposed for the loopfilter to reduce hardware and thus power and area. The question arises if the effort for this single amplifier approach is indeed lower compared to the two amplifier approach, or if the single OpAmp has to fulfill much higher requirements, which would make the approach counterproductive. To answer this question, we compare the traditional dual amplifier approach, namely the CRFF and CRFB topology, to two single amplifier approaches for the resonator under the influence of amplifier nonidealities and mismatch. It is shown that the single amplifier resonator can come with significant drawbacks, but when compensated for carefully, can still be advantageously applied.}, author = {{Wagner}, J. and {Reich}, S. and {Ritter}, R. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS)}, doi = {10.1109/ICECS.2016.7841240}, month = {12}, pages = {468-471}, title = {Finite GBW in single OpAmp CT ΣΔ modulators}, url = {https://ieeexplore.ieee.org/document/7841240/}, year = 2016 }
 Link
 https://ieeexplore.ieee.org/document/7841240/
 DOI
 10.1109/ICECS.2016.7841240
22. J. Wagner, S. Reich, R. Ritter, J. Anders, and M. Ortmanns, “Finite GBW in Single OpAmp CT Sigma Delta Modulators,” 23rd Ieee International Conference on Electronics Circuits and Systems (Icecs 2016), pp. 468–471, 2016, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000399230200123
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 BibTeX
 @article{RN56, author = {Wagner, J. and Reich, S. and Ritter, R. and Anders, J. and Ortmanns, M.}, journal = {23rd Ieee International Conference on Electronics Circuits and Systems (Icecs 2016)}, pages = {468-471}, title = {Finite GBW in Single OpAmp CT Sigma Delta Modulators}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000399230200123}, year = 2016 }
 Link
 /brokenurl#://WOS:000399230200123
23. M. Wick, M. Jüttner, and W. M. Rucker, “Fourier Transform based Analysis of Harmonic Nonlinear Magnetic Fields,” in 10th International Symposium on Electric and Magnetic Fields, Lyon, France, 2016.
 - BibTeX
 BibTeX
 @inproceedings{wick2016fourier, address = {Lyon, France}, author = {Wick, Markus and Jüttner, Matthias and Rucker, Wolfgang M.}, booktitle = {10th International Symposium on Electric and Magnetic Fields}, title = {Fourier Transform based Analysis of Harmonic Nonlinear Magnetic Fields}, year = 2016 }
2015
1. A. AlMarashli, J. Anders, and M. Ortmanns, “Design study on a SAR ADC using an incremental ΣΔ-DAC,” in 2015 11th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME), Jun. 2015, pp. 172–175. doi: 10.1109/PRIME.2015.7251362.
 BibTeX
 @inproceedings{7251362, abstract = {The use of the charge redistribution DAC, which relies on capacitive element matching, limits the achievable effective resolution of nowadays Successive Approximation Register (SAR) ADCs below about 13 effective bits. To overcome this limitation, this paper discusses the implementation of an incremental sigma delta (I-SD) DAC in the feedback path of a 16-bit SAR ADC. The proposed DAC uses an intrinsically linear one-bit output from a digital SD modulator, which is passed to an analog reconstruction filter. The filter architecture including an FIR part and active integrators is implemented on transistor level. The circuit is implemented using TSMC's 40nm CMOS technology. The I-SD-DAC achieves 100 dB SFDR at a sampling frequency of 500 kHz. A behavioral level simulation of a 16-bit SAR ADC loop employing the designed schematic I-SD-DAC loop achieves an SFDR of 96.2 dB and an SNDR of 83.5dB with 34.18 kS/s.}, author = {{AlMarashli}, A. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2015 11th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME)}, doi = {10.1109/PRIME.2015.7251362}, month = {06}, pages = {172-175}, title = {Design study on a SAR ADC using an incremental ΣΔ-DAC}, url = {https://ieeexplore.ieee.org/document/7251362/}, year = 2015 }
 Link
 https://ieeexplore.ieee.org/document/7251362/
 DOI
 10.1109/PRIME.2015.7251362
2. A. AlMarashli, J. Anders, and M. Ortmanns, “Design study on a SAR ADC using an incremental Sigma Delta-DAC,” 2015 11th Conference on Ph.D. Research in Microelectronics and Electronics (Prime), pp. 172–175, 2015, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000380398700044
 - BibTeX
 - Link
 BibTeX
 @article{RN4, author = {AlMarashli, A. and Anders, J. and Ortmanns, M.}, journal = {2015 11th Conference on Ph.D. Research in Microelectronics and Electronics (Prime)}, pages = {172-175}, title = {Design study on a SAR ADC using an incremental Sigma Delta-DAC}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000380398700044}, year = 2015 }
 Link
 /brokenurl#://WOS:000380398700044
3. A. Buchau and W. M. Rucker, “Meshfree computation of field lines across multiple domains using fast boundary element methods,” IEEE Transactions on Magnetics, vol. 51, Art. no. 3, Mar. 2015, doi: 10.1109/TMAG.2014.2359520.
 BibTeX
 @article{buchau2015meshfree, abstract = {A meshfree postprocessing for the computation of field lines suggests itself in the case of fast boundary element methods. Field values are only calculated and stored in points, which are absolutely necessary for field line computations. Hence, the total amount of processed data is dramatically reduced in comparison to a mesh-based approach along with precomputed field values in all mesh nodes. An automatic and robust domain detection method enables reliable identifications of intersections of field lines with domain boundaries even in the case of complex-shaped surfaces. A combination of automatic domain detection and adaptive step size control of the underlying Runge-Kutta-Fehlberg method results in correctly and efficiently computed field lines, including sharp bends at domain boundaries.}, author = {Buchau, André and Rucker, Wolfgang M.}, doi = {10.1109/TMAG.2014.2359520}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {03}, number = 3, pages = {1-4}, title = {Meshfree computation of field lines across multiple domains using fast boundary element methods}, url = {https://ieeexplore.ieee.org/document/7093436/}, volume = 51, year = 2015 }
 Link
 https://ieeexplore.ieee.org/document/7093436/
 DOI
 10.1109/TMAG.2014.2359520
4. A. Buchau and W. M. Rucker, “Feasibility of a meshfree post-processing for boundary element methods,” in Boundary Elements and Other Mesh Reduction Methods XXXVIII, A. H.-D. Cheng and C. A. Brebbia, Eds., WIT Press, Sep. 2015, pp. 327–338. doi: 10.2495/bem380261.
 BibTeX
 @inproceedings{buchau2015feasibility, author = {Buchau, André and Rucker, Wolfgang M.}, booktitle = {Boundary Elements and Other Mesh Reduction Methods XXXVIII}, doi = {10.2495/bem380261}, editor = {Cheng, A. H.-D. and Brebbia, C. A.}, month = {09}, pages = {327-338}, publisher = {WIT Press}, title = {Feasibility of a meshfree post-processing for boundary element methods}, url = {https://doi.org/10.2495%2Fbem380261}, year = 2015 }
 Link
 https://doi.org/10.2495%2Fbem380261
 DOI
 10.2495/bem380261
5. C. Chu, J. Anders, J. Becker, and M. Ortmanns, “Finite GBW compensation technique for CT ΔΣ modulators with differentiator based ELD compensation,” in 2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS), Jun. 2015, pp. 1–4. doi: 10.1109/NEWCAS.2015.7182112.
 BibTeX
 @inproceedings{7182112, abstract = {In this work, the mixed-signal differentiator technique for the compensation of excess loop delay has been extended to counteract the effect of the finite GBW of the amplifiers. A RZ DAC is utilized to realize a fast compensation path from the quantizer output to the input of the last integrator. After proper tuning of the scaling coefficients, the original NTF of the modulator can be restored, which has been verified in a 3rd order, single-bit single-loop CT ΔΣ modulator. By using the modified compensation technique, the GBW requirements on the amplifiers can be relaxed significantly while maintaining the SQNR performance and the modulator stability. Consequently, the power consumption of the amplifiers can be drastically reduced.}, author = {{Chu}, C. and {Anders}, J. and {Becker}, J. and {Ortmanns}, M.}, booktitle = {2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)}, doi = {10.1109/NEWCAS.2015.7182112}, month = {06}, pages = {1-4}, title = {Finite GBW compensation technique for CT ΔΣ modulators with differentiator based ELD compensation}, url = {https://ieeexplore.ieee.org/document/7182112/}, year = 2015 }
 Link
 https://ieeexplore.ieee.org/document/7182112/
 DOI
 10.1109/NEWCAS.2015.7182112
6. C. Chu, J. Anders, J. Becker, and M. Ortmanns, “Finite GBW Compensation Technique for CT Delta Sigma Modulators with Differentiator Based ELD Compensation,” 2015 Ieee 13th International New Circuits and Systems Conference (Newcas), 2015, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000380523300135
 - BibTeX
 - Link
 BibTeX
 @article{RN19, author = {Chu, C. and Anders, J. and Becker, J. and Ortmanns, M.}, issn = {2472-467x}, journal = {2015 Ieee 13th International New Circuits and Systems Conference (Newcas)}, title = {Finite GBW Compensation Technique for CT Delta Sigma Modulators with Differentiator Based ELD Compensation}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000380523300135}, year = 2015 }
 Link
 /brokenurl#://WOS:000380523300135
7. A. Elkafrawy, J. Anders, and M. Ortmanns, “A 10-bit Reference Free Current Mode SAR ADC with 58.4 dB SFDR at 50 MS/s in 90 nm CMOS,” 2015 Nordic Circuits and Systems Conference (Norcas) - Norchip & International Symposium on System-on-Chip (Soc), 2015, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000380441400002
 - BibTeX
 - Link
 BibTeX
 @article{RN28, author = {Elkafrawy, A. and Anders, J. and Ortmanns, M.}, journal = {2015 Nordic Circuits and Systems Conference (Norcas) - Norchip & International Symposium on System-on-Chip (Soc)}, title = {A 10-bit Reference Free Current Mode SAR ADC with 58.4 dB SFDR at 50 MS/s in 90 nm CMOS}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000380441400002}, year = 2015 }
 Link
 /brokenurl#://WOS:000380441400002
8. A. Elkafrawy, J. Anders, and M. Ortmanns, “A 10-bit 150 MS/s Current Mode SAR ADC in 90 nm CMOS,” 2015 11th Conference on Ph.D. Research in Microelectronics and Electronics (Prime), pp. 274–277, 2015, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000380398700070
 - BibTeX
 - Link
 BibTeX
 @article{RN29, author = {Elkafrawy, A. and Anders, J. and Ortmanns, M.}, journal = {2015 11th Conference on Ph.D. Research in Microelectronics and Electronics (Prime)}, pages = {274-277}, title = {A 10-bit 150 MS/s Current Mode SAR ADC in 90 nm CMOS}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000380398700070}, year = 2015 }
 Link
 /brokenurl#://WOS:000380398700070
9. S. Fahmy, M. Dietl, P. Sareen, M. Ortmanns, and J. Anders, “A BW-tracking semi-digital PLL with near-optimal VCO phase noise shaping in low-cost 0.4 mu m CMOS achieving 700 fs rms phase jitter,” 2015 Nordic Circuits and Systems Conference (Norcas) - Norchip & International Symposium on System-on-Chip (Soc), 2015, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000380441400004
 - BibTeX
 - Link
 BibTeX
 @article{RN31, author = {Fahmy, S. and Dietl, M. and Sareen, P. and Ortmanns, M. and Anders, J.}, journal = {2015 Nordic Circuits and Systems Conference (Norcas) - Norchip & International Symposium on System-on-Chip (Soc)}, title = {A BW-tracking semi-digital PLL with near-optimal VCO phase noise shaping in low-cost 0.4 mu m CMOS achieving 700 fs rms phase jitter}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000380441400004}, year = 2015 }
 Link
 /brokenurl#://WOS:000380441400004
10. H. Li, R. Banucu, A. Buchau, N. Klaas, and W. M. Rucker, “Optimisation of a concentration measurement sensor for nano sized zero valent iron using numerical simulation,” IET Science, Measurement and Technology, 2015.
 - BibTeX
 BibTeX
 @article{li2015optimisation, author = {Li, Hua and Banucu, Remus and Buchau, André and Klaas, Norbert and Rucker, Wolfgang M.}, journal = {IET Science, Measurement and Technology}, title = {Optimisation of a concentration measurement sensor for nano sized zero valent iron using numerical simulation}, year = 2015 }
11. T. Liu, J. Anders, and M. Ortmanns, “Bidirectional optical transcutaneous telemetric link for brain machine interface,” Electronics Letters, vol. 51, Art. no. 24, 2015, doi: 10.1049/el.2015.1404.
 BibTeX
 @article{RN41, author = {Liu, T. and Anders, J. and Ortmanns, M.}, doi = {10.1049/el.2015.1404}, issn = {0013-5194}, journal = {Electronics Letters}, number = 24, pages = {1969-1970}, title = {Bidirectional optical transcutaneous telemetric link for brain machine interface}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000365573200008}, volume = 51, year = 2015 }
 Link
 /brokenurl#://WOS:000365573200008
 DOI
 10.1049/el.2015.1404
12. M. Lorenz, R. Ritter, J. Anders, and M. Ortmanns, “Estimation of Non-Idealities in Sigma-Delta Modulators for Test and Correction Using Unscented Kalman Filters,” Ieee Transactions on Circuits and Systems I-Regular Papers, vol. 62, Art. no. 5, 2015, doi: 10.1109/Tcsi.2015.2395611.
 BibTeX
 @article{RN50, author = {Lorenz, M. and Ritter, R. and Anders, J. and Ortmanns, M.}, doi = {10.1109/Tcsi.2015.2395611}, issn = {1549-8328}, journal = {Ieee Transactions on Circuits and Systems I-Regular Papers}, number = 5, pages = {1240-1249}, title = {Estimation of Non-Idealities in Sigma-Delta Modulators for Test and Correction Using Unscented Kalman Filters}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000353887300004}, volume = 62, year = 2015 }
 Link
 /brokenurl#://WOS:000353887300004
 DOI
 10.1109/Tcsi.2015.2395611
2014
1. A. AlMarashli, J. Anders, and M. Ortmanns, “Employing Incremental Sigma Delta DACs for High Resolution SAR ADC,” 2014 21st Ieee International Conference on Electronics, Circuits and Systems (Icecs), pp. 132–135, 2014, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000380548000034
 - BibTeX
 - Link
 BibTeX
 @article{RN3, author = {AlMarashli, A. and Anders, J. and Ortmanns, M.}, journal = {2014 21st Ieee International Conference on Electronics, Circuits and Systems (Icecs)}, pages = {132-135}, title = {Employing Incremental Sigma Delta DACs for High Resolution SAR ADC}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000380548000034}, year = 2014 }
 Link
 /brokenurl#://WOS:000380548000034
2. U. Bihr et al., “A Neural Recorder IC with HV Input Multiplexer for Voltage and Current Stimulation with 18V Compliance,” Proceedings of the 40th European Solid-State Circuit Conference (Esscirc 2014), p. 103–+, 2014, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000349461900020
 - BibTeX
 - Link
 BibTeX
 @article{RN12, author = {Bihr, U. and Anders, J. and Rickert, J. and Schuettler, M. and Moeller, A. and Boven, K. H. and Becker, J. and Ortmanns, M.}, issn = {1930-8833}, journal = {Proceedings of the 40th European Solid-State Circuit Conference (Esscirc 2014)}, pages = {103-+}, title = {A Neural Recorder IC with HV Input Multiplexer for Voltage and Current Stimulation with 18V Compliance}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000349461900020}, year = 2014 }
 Link
 /brokenurl#://WOS:000349461900020
3. U. Bihr, H. Xu, C. Bulach, M. Lorenz, J. Anders, and M. Ortmanns, “Real-time data compression of neural spikes,” in 2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS), Jun. 2014, pp. 436–439. doi: 10.1109/NEWCAS.2014.6934076.
 BibTeX
 @inproceedings{6934076, abstract = {This paper presents an analysis of the effectiveness of delta compression (DC) with additional entropy encoding, referred to as modified delta compression (MDC), as real-time compression scheme for neural spikes. Neural data compression which does not result in major distortion of the data is an attractive option to lower the transmitter power consumption. Since a lossy compression will result in a potentially undesirable loss of information the above mentioned compression scheme is analyzed regarding its ability to preserve the spike sorting relevant information content of the neural signals. Our analysis shows that MDC with thresholding is suitable for the compression of low-noise synthetic neural spike signals, but that its performance significantly degrades in the presence of higher noise levels or with recorded neural signals. In our simulations, the lossless MDC scheme achieves a mean compression rate of 2 without signal distortion. An example circuit realization for the compression of 100 channels synthesized in a 180 nm CMOS technology occupies a chip area of 0.72 mm2 and consumes 0.97 mW of power. Based on these results, it was found that the MDC scheme is capable of lowering the overall power consumption when the utilized wireless transmitters consume more than 121 pJ/bit which applies to most state of the art transmitter implementations.}, author = {{Bihr}, U. and {Xu}, H. and {Bulach}, C. and {Lorenz}, M. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)}, doi = {10.1109/NEWCAS.2014.6934076}, month = {06}, pages = {436-439}, title = {Real-time data compression of neural spikes}, url = {https://ieeexplore.ieee.org/document/6934076/}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6934076/
 DOI
 10.1109/NEWCAS.2014.6934076
4. T. Bruckner, C. Zorn, J. Anders, J. Becker, W. Mathis, and M. Ortmanns, “A GPU-Accelerated Web-Based Synthesis Tool for CT Sigma-Delta Modulators,” Ieee Transactions on Circuits and Systems I-Regular Papers, vol. 61, Art. no. 5, 2014, doi: 10.1109/Tcsi.2013.2289408.
 BibTeX
 @article{RN16, author = {Bruckner, T. and Zorn, C. and Anders, J. and Becker, J. and Mathis, W. and Ortmanns, M.}, doi = {10.1109/Tcsi.2013.2289408}, issn = {1549-8328}, journal = {Ieee Transactions on Circuits and Systems I-Regular Papers}, number = 5, pages = {1429-1441}, title = {A GPU-Accelerated Web-Based Synthesis Tool for CT Sigma-Delta Modulators}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000335566500014}, volume = 61, year = 2014 }
 Link
 /brokenurl#://WOS:000335566500014
 DOI
 10.1109/Tcsi.2013.2289408
5. T. Brückner, C. Zorn, J. Anders, J. Becker, W. Mathis, and M. Ortmanns, “A GPU-Accelerated Web-Based Synthesis Tool for CT Sigma-Delta Modulators,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 61, Art. no. 5, May 2014, doi: 10.1109/TCSI.2013.2289408.
 BibTeX
 @article{6695797, abstract = {This paper presents a design environment for continuous-time sigma-delta analog-to-digital converters for automatic coefficient scaling using a genetic algorithm. In order to provide an interactive design tool which enables the designer to transform and refine basic performance specifications into the desired, detailed high-level filter description, a short response time is mandatory. Previously published heuristic-search-based design tools have response times in the range of several ten minutes up to hours and are mostly not freely available. In contrast, the design environment presented in this paper provides results in less than a minute due the utilization of a fast simulation method implemented on a graphics card processor. Our hardware supported approach allows performing between 10 k and 67 k simulations and evaluations per second for internal model orders of one to eight, allowing to investigate millions of settings in less than a minute.}, author = {{Brückner}, T. and {Zorn}, C. and {Anders}, J. and {Becker}, J. and {Mathis}, W. and {Ortmanns}, M.}, doi = {10.1109/TCSI.2013.2289408}, issn = {1558-0806}, journal = {IEEE Transactions on Circuits and Systems I: Regular Papers}, month = {05}, number = 5, pages = {1429-1441}, title = {A GPU-Accelerated Web-Based Synthesis Tool for CT Sigma-Delta Modulators}, url = {https://ieeexplore.ieee.org/document/6695797/}, volume = 61, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6695797/
 DOI
 10.1109/TCSI.2013.2289408
6. A. Buchau and W. M. Rucker, “The meshfree computation of stationary electric current densities in complex shaped conductors using 3D boundary element methods,” in Boundary Elements and Other Mesh Reduction Methods XXXVII, C. Brebbia and A. Cheng, Eds., WIT Press, 2014, pp. 121–133.
 - BibTeX
 BibTeX
 @incollection{buchau2014meshfree, author = {Buchau, André and Rucker, Wolfgang M.}, booktitle = {Boundary Elements and Other Mesh Reduction Methods XXXVII}, editor = {Brebbia, C. and Cheng, A.}, pages = {121-133}, publisher = {WIT Press}, title = {The meshfree computation of stationary electric current densities in complex shaped conductors using 3D boundary element methods}, year = 2014 }
7. C. Chu et al., “A 1.92-GS/s CT Delta Sigma Modulator with 70-dB DR and 78-dB SFDR in 15-MHz Bandwidth,” 2014 Ieee 12th International New Circuits and Systems Conference (Newcas), pp. 480–483, 2014, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000363906700118
 - BibTeX
 - Link
 BibTeX
 @article{RN21, author = {Chu, C. and Kauffman, J. G. and Anders, J. and Becker, J. and Ortmanns, M. and Epp, M. and Chartier, S.}, issn = {2472-467x}, journal = {2014 Ieee 12th International New Circuits and Systems Conference (Newcas)}, pages = {480-483}, title = {A 1.92-GS/s CT Delta Sigma Modulator with 70-dB DR and 78-dB SFDR in 15-MHz Bandwidth}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000363906700118}, year = 2014 }
 Link
 /brokenurl#://WOS:000363906700118
8. C. Chu et al., “A 1.92-GS/s CT ΔΣ modulator with 70-db DR and 78-db SFDR in 15-MHz bandwidth,” in 2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS), Jun. 2014, pp. 480–483. doi: 10.1109/NEWCAS.2014.6934087.
 BibTeX
 @inproceedings{6934087, abstract = {This paper describes the implementation and measurement results of a 1.92 GS/s continuous-time (CT) low-pass ΔΣmodulator for a high frequency (>10 GHz) multifunctional receiver. The proposed single-loop 3rd-order modulator operates at 1.92 GHz, taking advantage of the high transit frequency (fT) of a low-cost 0.25 μm SiGe BiCMOS process. In order to achieve high linearity, single-bit quantization is employed, which is inherently linear and no digital DAC linearity enhancement technique is required. The experimental prototype chip achieves a dynamic range of 70 dB and a spurious-free dynamic range (SFDR) of 78.1 dB for a signal bandwidth of 15 MHz. It dissipates 220 mW and occupies 0.4 mm2 silicon area.}, author = {{Chu}, C. and {Kauffman}, J. G. and {Anders}, J. and {Becker}, J. and {Ortmanns}, M. and {Epp}, M. and {Chartier}, S.}, booktitle = {2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)}, doi = {10.1109/NEWCAS.2014.6934087}, month = {06}, pages = {480-483}, title = {A 1.92-GS/s CT ΔΣ modulator with 70-db DR and 78-db SFDR in 15-MHz bandwidth}, url = {https://ieeexplore.ieee.org/document/6934087/}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6934087/
 DOI
 10.1109/NEWCAS.2014.6934087
9. A. Elkafrawy, A. AlMarashli, R. Ritter, J. Anders, and M. Ortmanns, “Design of a High Linearity Gm Stage for a High Speed Current Mode SAR ADC,” 2014 21st Ieee International Conference on Electronics, Circuits and Systems (Icecs), pp. 136–139, 2014, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000380548000035
 - BibTeX
 - Link
 BibTeX
 @article{RN25, author = {Elkafrawy, A. and AlMarashli, A. and Ritter, R. and Anders, J. and Ortmanns, M.}, journal = {2014 21st Ieee International Conference on Electronics, Circuits and Systems (Icecs)}, pages = {136-139}, title = {Design of a High Linearity Gm Stage for a High Speed Current Mode SAR ADC}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000380548000035}, year = 2014 }
 Link
 /brokenurl#://WOS:000380548000035
10. A. Elkafrawy, J. Anders, and M. Ortmanns, “A high resolution transimpedance amplifier for use in a 10-bit 200 MS/s current mode SAR ADC,” in 2014 IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS), Aug. 2014, pp. 1057–1060. doi: 10.1109/MWSCAS.2014.6908600.
 BibTeX
 @inproceedings{6908600, abstract = {An approach towards a high speed current mode SAR ADC is presented. Even though SAR ADCs based on charge redistribution have been significantly improved in efficiency and operating frequency, they are still limited by the settling requirements of the switched capacitor DAC. To overcome this limitation, we propose the use of a current mode SAR ADC incorporating a current steering DAC operating at 2 GS/s and an overall Nyquist rate conversion speed of 200 MS/s. In this paper, the main focus is placed on the design of a high-resolution low-input-impedance transimpedance amplifier (TIA) used as the comparator preamplifier in the proposed current mode SAR ADC. The TIA converts the difference between the DAC feedback current and the output current of the input transconductance (Gm) stage to a voltage which is then quantized by a latch. For high-speed operation, trade-offs between input resistance, noise and voltage headroom pose challenges in the design of the high-speed TIA. More specifically, achieving a low input-referred noise current requires larger headrooms and thus higher supply voltages, which in turn reduces the TIA power efficiency. Thus, input impedance and input-referred noise current are the key determining factors for the design of high-speed TIAs in current based SAR ADCs. Our analysis is compared against a schematic level implementation in a 1.2 /1.8V 90nm CMOS technology. The TIA implementation is simulated on transistor level to achieve an overall resolution of 10 bit in the proposed current based SAR ADC together with the input Gm and current steering DAC over a Nyquist band from DC to 100 MHz.}, author = {{Elkafrawy}, A. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2014 IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS)}, doi = {10.1109/MWSCAS.2014.6908600}, issn = {1558-3899}, month = {08}, pages = {1057-1060}, title = {A high resolution transimpedance amplifier for use in a 10-bit 200 MS/s current mode SAR ADC}, url = {https://ieeexplore.ieee.org/document/6908600/;jsessionid=mkEWqJE4qC5CmjtCwsIbDmjJqvy-RLs9pr5m7HhaNhtwFK4SEMqT!1820523694?reason=concurrency}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6908600/;jsessionid=mkEWqJE4qC5CmjtCwsIbDmjJqvy-RLs9pr5m7HhaNhtwFK4SEMqT!1820523694?reason=concurrency
 DOI
 10.1109/MWSCAS.2014.6908600
11. G. Gualco, J. Anders, A. Sienkiewicz, S. Alberti, L. Forro, and G. Boero, “Cryogenic single-chip electron spin resonance detector,” Journal of Magnetic Resonance, vol. 247, pp. 96–103, 2014, doi: 10.1016/j.jmr.2014.08.013.
 BibTeX
 @article{RN60, author = {Gualco, G. and Anders, J. and Sienkiewicz, A. and Alberti, S. and Forro, L. and Boero, G.}, doi = {10.1016/j.jmr.2014.08.013}, issn = {1090-7807}, journal = {Journal of Magnetic Resonance}, pages = {96-103}, title = {Cryogenic single-chip electron spin resonance detector}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000343690900014}, volume = 247, year = 2014 }
 Link
 /brokenurl#://WOS:000343690900014
 DOI
 10.1016/j.jmr.2014.08.013
12. M. Jüttner, A. Buchau, and W. M. Rucker, “Software Agent Based Solution of Segregated Multiphysics Problems with Varying Study Types,” in The 12th International Workshop on Finite Elements for Microwave Engineering - FEM2014, Chengdu, China, 2014, p. 65.
 - BibTeX
 BibTeX
 @inproceedings{juttner2014software, address = {Chengdu, China}, author = {Jüttner, Matthias and Buchau, André and Rucker, Wolfgang M.}, booktitle = {The 12th International Workshop on Finite Elements for Microwave Engineering - FEM2014}, pages = 65, title = {Software Agent Based Solution of Segregated Multiphysics Problems with Varying Study Types}, year = 2014 }
13. M. Jüttner, A. Buchau, D. Vögeli, W. M. Rucker, and P. Göhner, “Iterative Software Agent Based Solution of Multiphysics Problems,” in Scientific Computing in Electrical Engineering SCEE, Wuppertal, Germany, 2014, pp. 32–33.
 - BibTeX
 BibTeX
 @inproceedings{juttner2014iterative, address = {Wuppertal, Germany}, author = {Jüttner, Matthias and Buchau, André and Vögeli, Desirée and Rucker, Wolfgang M. and Göhner, Peter}, booktitle = {Scientific Computing in Electrical Engineering SCEE}, pages = {32-33}, title = {Iterative Software Agent Based Solution of Multiphysics Problems}, year = 2014 }
14. T. Liu, U. Bihr, J. Anders, and M. Ortmanns, “Performance evaluation of a low power optical wireless link for biomedical data transfer,” in 2014 IEEE International Symposium on Circuits and Systems (ISCAS), Jun. 2014, pp. 870–873. doi: 10.1109/ISCAS.2014.6865274.
 BibTeX
 @inproceedings{6865274, abstract = {We report on an experimental low power transcutaneous optical telemetric link (TOTL) for high speed biomedical data transfer. By decreasing the bandwidth to data rate ratio, a silicon photodiode with large active size can be used to significantly increase transmission efficiency as well as misalignment tolerance. Additionally, a custom-designed transimpedance amplifier (TIA) with low input referred noise and a modified on-off keying with a custom designed low power VCSEL (vertical cavity surface emitting laser) driver are used to further reduce the required power consumption. The proposed system transmits data up to 75 Mbps through 6 mm thick tissue, in the presence of a 4 mm misalignment while achieving a BER better than 10-5, with a power consumption lower than 2.8 mW.}, author = {{Liu}, T. and {Bihr}, U. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2014 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2014.6865274}, issn = {2158-1525}, month = {06}, pages = {870-873}, title = {Performance evaluation of a low power optical wireless link for biomedical data transfer}, url = {https://ieeexplore.ieee.org/document/6865274/}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6865274/
 DOI
 10.1109/ISCAS.2014.6865274
15. T. Liu, U. Bihr, J. Becker, J. Anders, and M. Ortmanns, “Live demonstration: In vivo verification of a 100 Mbps transcutaneous optical telemetric link,” in 2014 IEEE Biomedical Circuits and Systems Conference (BioCAS) Proceedings, Oct. 2014, p. 186. doi: 10.1109/BioCAS.2014.6981689.
 BibTeX
 @inproceedings{6981689, abstract = {In this live demonstration, we will show the operation of a high speed transcutaneous optical telemetric link, through a piece of pork skin as the transmission medium. In all experiments, a PRBS (Pseudorandom Binary Sequence) generated by a linear-feedback shift register (LFSR) implemented on an Altera FPGA will be used as test signal. The optical transmitter converts the electrical signal into an optical one which is then received by a photodiode, before it is amplified and digitized by means of a TIA, a limiting amplifier and a CDR (clock and data recovery circuit).}, author = {{Liu}, T. and {Bihr}, U. and {Becker}, J. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2014 IEEE Biomedical Circuits and Systems Conference (BioCAS) Proceedings}, doi = {10.1109/BioCAS.2014.6981689}, issn = {2163-4025}, month = {10}, pages = {186-186}, title = {Live demonstration: In vivo verification of a 100 Mbps transcutaneous optical telemetric link}, url = {https://ieeexplore.ieee.org/document/6981689/}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6981689/
 DOI
 10.1109/BioCAS.2014.6981689
16. T. Liu, U. Bihr, J. Becker, J. Anders, and M. Ortmanns, “In vivo verification of a 100 Mbps transcutaneous optical telemetric link,” in 2014 IEEE Biomedical Circuits and Systems Conference (BioCAS) Proceedings, Oct. 2014, pp. 580–583. doi: 10.1109/BioCAS.2014.6981792.
 BibTeX
 @inproceedings{6981792, abstract = {We report on an optical telemetric link capable of providing a high data rate at a low power consumption for the transcutaneous transmission of neural signals. The telemetric link is designed for operation as the interface between an implanted cortical array and an external receiver. By converting the digitized neural signals to a stream of infrared optical pulses, the optical telemetry wirelessly transmits the neural data through the skin. The implantable transmitter prototype PCB contains a VCSEL (Vertical Cavity Surface Emitting Laser) driver with a VCSEL glued onto its chip surface. For protection, the transmitter PCB is coated with a thin layer of PDMS. The external receiver utilizes a large-size PIN silicon photodiode followed by a shunt shunt feedback transimpedance amplifier, a limiting amplifier and circuitry for clock and data recovery. In vivo tests performed on an anesthetized sheep show that the link is capable of transmitting data at a speed of 100 Mbps with a bit error rate (BER) of 2× 10-7 while consuming only 2.1 mW of electrical power.}, author = {{Liu}, T. and {Bihr}, U. and {Becker}, J. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2014 IEEE Biomedical Circuits and Systems Conference (BioCAS) Proceedings}, doi = {10.1109/BioCAS.2014.6981792}, issn = {2163-4025}, month = {10}, pages = {580-583}, title = {In vivo verification of a 100 Mbps transcutaneous optical telemetric link}, url = {https://ieeexplore.ieee.org/document/6981792/}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6981792/
 DOI
 10.1109/BioCAS.2014.6981792
17. T. Liu, Z. Cai, J. Anders, and M. Ortmanns, “A bootstrap transimpedance amplifier for high speed optical transcutaneous wireless links,” in 2014 10th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME), Jun. 2014, pp. 1–4. doi: 10.1109/PRIME.2014.6872669.
 BibTeX
 @inproceedings{6872669, abstract = {We report on a prototype of an experimental bootstrap transimpedance preamplifier (BTA) for high speed transcutaneous data transfer. Due to the strong scattering effect of the human skin and the corresponding widely spread optical power distribution, a large size photodiode is required at the external receiver in order to increase the transmission efficiency as well as the misalignment tolerance in the transcutaneous optical telemetric link (TOTL). However, the increased junction capacitance associated with a larger size photodiodes makes the design of high speed transimpedance amplifiers (TIA) challenging. To mitigate this tradeoff, in this paper, we use bootstrapping technique to achieve a large TIA bandwidth even in the presence of large-size photodiodes. Thereby, an emitter follower is employed as the bootstrapping buffer to minimize the junction capacitance seen by the transimpedance stage. The proposed circuit is tested on circuit board level in combination with a 10 mm2 photodiode with a parasitic capacitance as large as 350 pF and achieves a 61.5 dBΩ transimpedance gain over a bandwidth of 61 MHz with an input referred current noise density of 158 pA/√Hz. Therewith, a transcutaneous optical link with 75 MBps is achieved.}, author = {{Liu}, T. and {Cai}, Z. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2014 10th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME)}, doi = {10.1109/PRIME.2014.6872669}, month = {06}, pages = {1-4}, title = {A bootstrap transimpedance amplifier for high speed optical transcutaneous wireless links}, url = {https://ieeexplore.ieee.org/document/6872669/}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6872669/
 DOI
 10.1109/PRIME.2014.6872669
18. M. Lorenz, T. Brückner, R. Ritter, J. Anders, and M. Ortmanns, “A square root unscented Kalman filter for estimating DAC and loopfilter nonidealities in continuous-time sigma-delta modulators,” in 2014 IEEE International Symposium on Circuits and Systems (ISCAS), Jun. 2014, pp. 1159–1162. doi: 10.1109/ISCAS.2014.6865346.
 BibTeX
 @inproceedings{6865346, abstract = {In this work, an unscented Kalman filter with improved numerical properties is shown to be able to simultaneously estimate the major nonidealities of continuous-time sigma-delta modulators. Circuit imperfections in sigma-delta modulators like, e.g., nonlinearities in the feedback digital-to-analog converters are known to highly reduce the modulators's performance. The state of the art shows several techniques to compensate for some of these nonidealities, whereby most of the methods only focus on single parameters or can only be applied to specific modulator structures. The presented method is capable of estimating the most serious nonideal circuit parameters concurrently whilst not being limited to specific modulator structures.}, author = {{Lorenz}, M. and {Brückner}, T. and {Ritter}, R. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2014 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2014.6865346}, issn = {2158-1525}, month = {06}, pages = {1159-1162}, title = {A square root unscented Kalman filter for estimating DAC and loopfilter nonidealities in continuous-time sigma-delta modulators}, url = {https://ieeexplore.ieee.org/document/6865346/}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6865346/
 DOI
 10.1109/ISCAS.2014.6865346
19. M. Lorenz, T. Bruckner, R. Ritter, J. Anders, and M. Ortmanns, “A Square Root Unscented Kalman Filter for Estimating DAC and Loopfilter Nonidealities in Continuous-Time Sigma-Delta Modulators,” 2014 Ieee International Symposium on Circuits and Systems (Iscas), pp. 1159–1162, 2014, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000346488600294
 - BibTeX
 - Link
 BibTeX
 @article{RN49, author = {Lorenz, M. and Bruckner, T. and Ritter, R. and Anders, J. and Ortmanns, M.}, issn = {0271-4302}, journal = {2014 Ieee International Symposium on Circuits and Systems (Iscas)}, pages = {1159-1162}, title = {A Square Root Unscented Kalman Filter for Estimating DAC and Loopfilter Nonidealities in Continuous-Time Sigma-Delta Modulators}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000346488600294}, year = 2014 }
 Link
 /brokenurl#://WOS:000346488600294
20. B. Schlecker, M. Dukic, B. Erickson, M. Ortmanns, G. Fantner, and J. Anders, “Single-Cycle-PLL Detection for Real-Time FM-AFM Applications,” IEEE Transactions on Biomedical Circuits and Systems, vol. 8, Art. no. 2, Apr. 2014, doi: 10.1109/TBCAS.2014.2307696.
 BibTeX
 @article{6800103, abstract = {In this paper we present a novel architecture for phase-locked loop (PLL) based high-speed demodulation of frequency-modulated (FM) atomic force microscopy (AFM) signals. In our approach, we use single-sideband (SSB) frequency upconversion to translate the AFM signal from the position sensitive detector to a fixed intermediate frequency (IF) of 10 MHz. In this way, we fully benefit from the excellent noise performance of PLL-based FM demodulators still avoiding the intrinsic bandwidth limitation of such systems. In addition, the upconversion to a fixed IF renders the PLL demodulator independent of the cantilever's resonance frequency, allowing the system to work with a large range of cantilever frequencies. To investigate if the additional noise introduced by the SSB upconverter degrades the system noise figure we present a model of the AM-to-FM noise conversion in PLLs incorporating a phase-frequency detector. Using this model, we can predict an upper corner frequency for the demodulation bandwidth above which the converted noise from the single-sideband upconverter becomes the dominant noise source and therefore begins to deteriorate the overall system performance. The approach is validated by both electrical and AFM measurements obtained with a PCB-based prototype implementing the proposed demodulator architecture.}, author = {{Schlecker}, B. and {Dukic}, M. and {Erickson}, B. and {Ortmanns}, M. and {Fantner}, G. and {Anders}, J.}, doi = {10.1109/TBCAS.2014.2307696}, issn = {1940-9990}, journal = {IEEE Transactions on Biomedical Circuits and Systems}, month = {04}, number = 2, pages = {206-215}, title = {Single-Cycle-PLL Detection for Real-Time FM-AFM Applications}, url = {https://ieeexplore.ieee.org/document/6800103/}, volume = 8, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6800103/
 DOI
 10.1109/TBCAS.2014.2307696
21. H. Xu, M. Lorenz, U. Bihr, J. Anders, and M. Ortmanns, “Wide-band efficiency-enhanced CMOS rectifier,” in 2014 IEEE International Symposium on Circuits and Systems (ISCAS), Jun. 2014, pp. 614–617. doi: 10.1109/ISCAS.2014.6865210.
 BibTeX
 @inproceedings{6865210, abstract = {We present in this paper the design of a wide-band efficiency-enhanced CMOS rectifier. A novel semi-active diode is proposed to minimize both the diode forward voltage drop and the reverse leakage current. This is achieved by dynamically configuring the rectification device as a threshold compensated diode in the on-state while a standard MOS diode in the offstate, respectively. The proposed rectifier is implemented in a 0.35μm 4M/2P standard CMOS process. In simulation, with 5.5V AC input at 13.56MHz, the rectifier outputs 4.94V DC voltage across a 1.2kΩ load resistor, achieving 87% power conversion efficiency (PCE) and 90% voltage conversion efficiency (VCE). The PCE and VCE can be maintained from 1MHz to 20MHz input frequency, with only 3% deviation in the PCE and 2% deviation in the VCE. In addition, the performance of the rectifier is self-compensated over temperature and process. From -40°C to +130°C, the simulated VCE varies within 2% from 89.6% to 87.7%, while the PCE stays almost constant at 86%. With 200 Monte Carlo samples, the standard deviation in the PCE and VCE are as low as 0.56% and 0.57%, respectively.}, author = {{Xu}, H. and {Lorenz}, M. and {Bihr}, U. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2014 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2014.6865210}, issn = {2158-1525}, month = {06}, pages = {614-617}, title = {Wide-band efficiency-enhanced CMOS rectifier}, url = {https://ieeexplore.ieee.org/document/6865210/}, year = 2014 }
 Link
 https://ieeexplore.ieee.org/document/6865210/
 DOI
 10.1109/ISCAS.2014.6865210
2013
1. J. Anders, J. Handwerker, M. Ortmanns, and G. Boero, “A fully-integrated detector for NMR microscopy in 0.13 mu m CMOS,” Proceedings of the 2013 Ieee Asian Solid-State Circuits Conference (a-Sscc), pp. 437–440, 2013, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000330857500109
 - BibTeX
 - Link
 BibTeX
 @article{RN7, author = {Anders, J. and Handwerker, J. and Ortmanns, M. and Boero, G.}, journal = {Proceedings of the 2013 Ieee Asian Solid-State Circuits Conference (a-Sscc)}, pages = {437-440}, title = {A fully-integrated detector for NMR microscopy in 0.13 mu m CMOS}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000330857500109}, year = 2013 }
 Link
 /brokenurl#://WOS:000330857500109
2. J. Anders, J. Handwerker, M. Ortmanns, and G. Boero, “A fully-integrated detector for NMR microscopy in 0.13μm CMOS,” in 2013 IEEE Asian Solid-State Circuits Conference (A-SSCC), Nov. 2013, pp. 437–440. doi: 10.1109/ASSCC.2013.6691076.
 BibTeX
 @inproceedings{6691076, abstract = {In this paper, we present a fully integrated receiver for NMR microscopy applications realized in a 0.13 μm CMOS technology. The chip co-integrates a planar detection coil together with a complete low-IF downconversion receiver consisting of a low noise amplifier, a quadrature downconversion mixer, a baseband amplifier stage and line drivers. The chip operates from a single 1.5V supply and consumes about 12mA of current. The active chip area is about 350×450 μm2. The detector's measured input referred voltage noise density at the operating frequency of 300 MHz is 260 pV/√Hz resulting in a measured spin sensitivity of 2×1013 spins/√Hz. Preliminary imaging experiments demonstrate the chip's capability of recording micron resolution MR images in imaging times which significantly advance the state-of-the-art.}, author = {{Anders}, J. and {Handwerker}, J. and {Ortmanns}, M. and {Boero}, G.}, booktitle = {2013 IEEE Asian Solid-State Circuits Conference (A-SSCC)}, doi = {10.1109/ASSCC.2013.6691076}, month = {11}, pages = {437-440}, title = {A fully-integrated detector for NMR microscopy in 0.13μm CMOS}, url = {https://ieeexplore.ieee.org/document/6691076/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6691076/
 DOI
 10.1109/ASSCC.2013.6691076
3. J. Anders and M. Ortmanns, “Frequency noise of CMOS LC tank oscillators operating in weak inversion,” in 2013 European Conference on Circuit Theory and Design (ECCTD), Sep. 2013, pp. 1–4. doi: 10.1109/ECCTD.2013.6662207.
 BibTeX
 @inproceedings{6662207, abstract = {In this paper, we present an analytical model for a CMOS LC tank oscillator with its active devices operating in weak inversion. Our model combines nonlinear, stochastic circuit analysis in the form of the so-called stochastic averaging method proposed by Stratonovich with advanced MOS device modeling in the form of the EKV-model. The presented approach not only provides - for the first time - simple, yet accurate closed-form expressions for the oscillation frequency and amplitude of a CMOS LC tank oscillator operating in weak inversion but also allows us to derive closed-form expressions for the phase and frequency noise of the oscillator originating from both the parasitic resistance of the tank coil and the white noise generated in the cross-coupled MOS transistor pair. Thanks to their relatively compact and closed form, the presented results can not only be used for circuit optimization during the initial design phase but also convey important insights into the dependency of phase noise on design parameters such as the transconductance of the active devices.}, author = {{Anders}, J. and {Ortmanns}, M.}, booktitle = {2013 European Conference on Circuit Theory and Design (ECCTD)}, doi = {10.1109/ECCTD.2013.6662207}, month = {09}, pages = {1-4}, title = {Frequency noise of CMOS LC tank oscillators operating in weak inversion}, url = {https://ieeexplore.ieee.org/document/6662207/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6662207/
 DOI
 10.1109/ECCTD.2013.6662207
4. R. Banucu, C. Scheiblich, J. Albert, V. Reinauer, and W. M. Rucker, “Efficient Compression of 3-D Eddy Current Problems With Integral Formulations,” IEEE Transactions on Magnetics, vol. 49, Art. no. 5, May 2013, doi: 10.1109/TMAG.2013.2242258.
 BibTeX
 @article{6514634, abstract = {For the calculation of eddy current problems using integral formulations, compression techniques are needed due to the fully populated system matrix. As the system matrix is ill-conditioned, even low compression leads to very high errors and is in most cases unsolvable with classical iterative solvers like CG or GMRES. By using regularization techniques, the condition number is enormously reduced, so that high compression rates can be achieved. In this paper the efficiency of the Block Wavelet Compression combined with the Tikhonov regularization is shown by 3-D eddy current problems. The use of the so called Block Wavelet Compression is presented for the first time for eddy current problems using integral formulations.}, author = {{Banucu}, R. and {Scheiblich}, C. and {Albert}, J. and {Reinauer}, V. and {Rucker}, W. M.}, doi = {10.1109/TMAG.2013.2242258}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {05}, number = 5, pages = {1625-1628}, title = {Efficient Compression of 3-D Eddy Current Problems With Integral Formulations}, url = {https://ieeexplore.ieee.org/document/6514634/}, volume = 49, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6514634/
 DOI
 10.1109/TMAG.2013.2242258
5. U. Bihr, T. Ungru, H. Xu, J. Anders, J. Becker, and M. Ortmanns, “A bidirectional neural interface with a HV stimulator and a LV neural amplifier,” in 2013 IEEE International Symposium on Circuits and Systems (ISCAS), May 2013, pp. 401–404. doi: 10.1109/ISCAS.2013.6571865.
 BibTeX
 @inproceedings{6571865, abstract = {This paper shows a neural stimulator with 15V supply voltage combined with a neural low-noise amplifier (LNA) with a supply of ±1.65V around the common mode voltage (VCM) of 7.5V. In most implementations, the stimulator and recorder use the same supply domain, thus either leading to low voltage compliance (VC) for the stimulator or to high power consumption in the recorder. Obviously, a separation of both is the preferable choice, but comes with the challenge of effective protection of the low voltage (LV) sensitive input nodes of the recorder. A high voltage (HV) transistor used as a switch between the two parts enables different supply voltages for stimulator and recorder. Thus, a high current stimulator with high VC can be combined with a high efficient LV neural recorder. The presented implementation shows a stimulator with a maximum stimulation current of ±15mA with 5-bit resolution out of a 15V supply. The recording part consists of a LNA with a VCM of 7.5V and a supply voltage of ±1.65V around VCM - VDDLNA=9.15V and VSSLNA=5.85V. It consumes only 11.8μW and achieves an input referred root-mean-square (RMS) noise of 5.5μV in the frequency band of 1Hz to 100kHz. The design is implemented and simulated in a 0.18μm HV technology.}, author = {{Bihr}, U. and {Ungru}, T. and {Xu}, H. and {Anders}, J. and {Becker}, J. and {Ortmanns}, M.}, booktitle = {2013 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2013.6571865}, issn = {2158-1525}, month = {05}, pages = {401-404}, title = {A bidirectional neural interface with a HV stimulator and a LV neural amplifier}, url = {https://ieeexplore.ieee.org/document/6571865/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6571865/
 DOI
 10.1109/ISCAS.2013.6571865
6. G. Boero, G. Gualco, R. Lisowski, J. Anders, D. Suter, and J. Brugger, “Room temperature strong coupling between a microwave oscillator and an ensemble of electron spins,” Journal of Magnetic Resonance, vol. 231, pp. 133–140, 2013, doi: 10.1016/j.jmr.2013.04.004.
 BibTeX
 @article{RN61, author = {Boero, G. and Gualco, G. and Lisowski, R. and Anders, J. and Suter, D. and Brugger, J.}, doi = {10.1016/j.jmr.2013.04.004}, issn = {1090-7807}, journal = {Journal of Magnetic Resonance}, pages = {133-140}, title = {Room temperature strong coupling between a microwave oscillator and an ensemble of electron spins}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000319548300018}, volume = 231, year = 2013 }
 Link
 /brokenurl#://WOS:000319548300018
 DOI
 10.1016/j.jmr.2013.04.004
7. T. Bruckner et al., “Discrete-Time Simulation of Continuous-Time Sigma Delta Modulators With Arbitrary Input Signals,” 2013 Ieee 20th International Conference on Electronics, Circuits, and Systems (Icecs), pp. 549–552, 2013, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000339725900143
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 BibTeX
 @article{RN15, author = {Bruckner, T. and Kiebler, M. and Lorenz, M. and Zorn, C. and Anders, J. and Mathis, W. and Ortmanns, M.}, journal = {2013 Ieee 20th International Conference on Electronics, Circuits, and Systems (Icecs)}, pages = {549-552}, title = {Discrete-Time Simulation of Continuous-Time Sigma Delta Modulators With Arbitrary Input Signals}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000339725900143}, year = 2013 }
 Link
 /brokenurl#://WOS:000339725900143
8. T. Bru¨ckner et al., “Discrete-time simulation of continuous-time ΣΔ modulators with arbitrary input signals,” in 2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS), Dec. 2013, pp. 549–552. doi: 10.1109/ICECS.2013.6815473.
 BibTeX
 @inproceedings{6815473, abstract = {In this paper, we present a method for fast lifting-based simulations of continuous-time (CT) Sigma Delta (ΣΔ) modulators with arbitrary input signal waveforms. Our approach allows for a very time-efficient simulation of important modulator parameters such as inter-modulation distortion, the response to a spread spectrum input or blocker signals, and evaluation of its signal transfer function. The proposed method exploits the fact that every finite length CT signal can be decomposed into a sum of sinusoidal signals by providing a computationally efficient algorithm which allows for a lifting based simulation of CT ΣΔ modulators for an input signal consisting of an arbitrary number of sinusoidal signals. Matlab based simulations demonstrate the validity of our approach and show that despite the increased complexity compared to ordinary lifting, the speed advantage over CT-simulations in Simulink is preserved.}, author = {{Bru¨ckner}, T. and {Kiebler}, M. and {Lorenz}, M. and {Zorn}, C. and {Anders}, J. and {Mathis}, W. and {Ortmanns}, M.}, booktitle = {2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS)}, doi = {10.1109/ICECS.2013.6815473}, month = {12}, pages = {549-552}, title = {Discrete-time simulation of continuous-time ΣΔ modulators with arbitrary input signals}, url = {https://ieeexplore.ieee.org/document/6815473/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6815473/
 DOI
 10.1109/ICECS.2013.6815473
9. C. Chu, T. Brückner, J. G. Kauffman, J. Anders, J. Becker, and M. Ortmanns, “Analysis and design of high speed/high linearity continuous time delta-sigma modulator,” in 2013 IEEE International Symposium on Circuits and Systems (ISCAS), May 2013, pp. 1268–1271. doi: 10.1109/ISCAS.2013.6572084.
 BibTeX
 @inproceedings{6572084, abstract = {This paper considers the implementation of a continuous-time low-pass single-bit ΔΣ analog-digital converter (ADC) for radar applications. By taking advantage of the high transit frequency of a 0.25μm SiGe BiCMOS technology, the 3rd-order modulator operates at 1.92GHz and achieves 77.8dB SNDR within a bandwidth of 15MHz, when simulating the sensitive circuit parts on transistor level. Thanks to the inherent linearity of single-bit digital-analog converter (DAC), high linearity of 90dB spurious-free dynamic range (SFDR) can be achieved.}, author = {{Chu}, C. and {Brückner}, T. and {Kauffman}, J. G. and {Anders}, J. and {Becker}, J. and {Ortmanns}, M.}, booktitle = {2013 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2013.6572084}, issn = {2158-1525}, month = {05}, pages = {1268-1271}, title = {Analysis and design of high speed/high linearity continuous time delta-sigma modulator}, url = {https://ieeexplore.ieee.org/document/6572084/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6572084/
 DOI
 10.1109/ISCAS.2013.6572084
10. C. Chu, T. Bruckner, J. G. Kauffman, J. Anders, J. Becker, and M. Ortmanns, “Analysis and Design of High Speed/High Linearity Continuous Time Delta-Sigma Modulator,” 2013 Ieee International Symposium on Circuits and Systems (Iscas), pp. 1268–1271, 2013, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000332006801126
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 BibTeX
 @article{RN20, author = {Chu, C. and Bruckner, T. and Kauffman, J. G. and Anders, J. and Becker, J. and Ortmanns, M.}, issn = {0271-4302}, journal = {2013 Ieee International Symposium on Circuits and Systems (Iscas)}, pages = {1268-1271}, title = {Analysis and Design of High Speed/High Linearity Continuous Time Delta-Sigma Modulator}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000332006801126}, year = 2013 }
 Link
 /brokenurl#://WOS:000332006801126
11. A. Elkafrawy, J. Anders, T. Bruckner, and M. Ortmanns, “Design of a Current Steering DAC for a High Speed Current Mode SAR ADC,” 2013 Ieee 20th International Conference on Electronics, Circuits, and Systems (Icecs), pp. 441–444, 2013, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000339725900119
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 BibTeX
 @article{RN26, author = {Elkafrawy, A. and Anders, J. and Bruckner, T. and Ortmanns, M.}, journal = {2013 Ieee 20th International Conference on Electronics, Circuits, and Systems (Icecs)}, pages = {441-444}, title = {Design of a Current Steering DAC for a High Speed Current Mode SAR ADC}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000339725900119}, year = 2013 }
 Link
 /brokenurl#://WOS:000339725900119
12. A. Elkafrawy, J. Anders, T. Brückner, and M. Ortmanns, “Design of a current steering DAC for a high speed current mode SAR ADC,” in 2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS), Dec. 2013, pp. 441–444. doi: 10.1109/ICECS.2013.6815449.
 BibTeX
 @inproceedings{6815449, abstract = {In this paper, an approach towards high speed current mode based SAR ADCs is presented. The main focus is placed on the design of a unary single-sided current steering DAC working with a binary search algorithm inside the SAR loop. Reflecting the fact that current source matching and precise current settling are the most important static and dynamic properties of the current steering DAC in a current based SAR ADC, the paper contains an initial investigation of the DAC current settling when driving a linear load together with an analysis of the effects of current source mismatch and noise on the DAC performance. The theoretical analysis is compared against a schematic level implementation in a 1.2V 90nm CMOS technology. This DAC implementation is designed for an overall resolution of 10bit in the current based SAR ADC over a Nyquist band from DC to 100MHz.}, author = {{Elkafrawy}, A. and {Anders}, J. and {Brückner}, T. and {Ortmanns}, M.}, booktitle = {2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS)}, doi = {10.1109/ICECS.2013.6815449}, month = {12}, pages = {441-444}, title = {Design of a current steering DAC for a high speed current mode SAR ADC}, url = {https://ieeexplore.ieee.org/document/6815449/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6815449/
 DOI
 10.1109/ICECS.2013.6815449
13. J. Handwerker et al., “An active TX/RX NMR probe for real-time monitoring of MRI field imperfections,” in 2013 IEEE Biomedical Circuits and Systems Conference (BioCAS), Oct. 2013, pp. 194–197. doi: 10.1109/BioCAS.2013.6679672.
 BibTeX
 @inproceedings{6679672, abstract = {In this paper, we present a PCB-based active miniaturized MR field probe for real-time monitoring of the magnetization's phase evolution during magnetic resonance (MR) experiments. The data obtained with the presented sensor can be used to correct gradient field imperfections which uncorrected result in significant distortions in the reconstructed MR images. The presented active field probe consists of a susceptibility matched solenoidal MR coil and a complete homodyne transceiver. Thanks to the local generation of the radio frequency signal required for the excitation of the spin ensemble and the downconversion of the recorded MR signal to low frequencies, the proposed architecture significantly reduces the crosstalk between the probe head and the MR imaging object compared to existing designs. MR measurements performed in an ultra high field 9.4 T full-body scanner prove the compatibility of the presented sensor with commercial MR imaging systems and demonstrate its excellent MR phase tracking performance.}, author = {{Handwerker}, J. and {Eschelbach}, M. and {Chang}, P. and {Henning}, A. and {Scheffler}, K. and {Ortmanns}, M. and {Anders}, J.}, booktitle = {2013 IEEE Biomedical Circuits and Systems Conference (BioCAS)}, doi = {10.1109/BioCAS.2013.6679672}, issn = {2163-4025}, month = {10}, pages = {194-197}, title = {An active TX/RX NMR probe for real-time monitoring of MRI field imperfections}, url = {https://ieeexplore.ieee.org/document/6679672/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6679672/
 DOI
 10.1109/BioCAS.2013.6679672
14. M. Jüttner, A. Buchau, M. Rauscher, W. M. Rucker, and P. Göhner, “Iterative Solution of Multiphysics Problems using Software Agents Designed as Physics Experts,” in International Symposium on Theoretical Electrical Engineering, Pilsen, Czech Republic, 2013, pp. 1–7.
 - BibTeX
 BibTeX
 @inproceedings{juttner2013iterative, address = {Pilsen, Czech Republic}, author = {Jüttner, Matthias and Buchau, André and Rauscher, Michael and Rucker, Wolfgang M. and Göhner, Peter}, booktitle = {International Symposium on Theoretical Electrical Engineering}, pages = {1-7}, title = {Iterative Solution of Multiphysics Problems using Software Agents Designed as Physics Experts}, year = 2013 }
15. T. Liu, J. Anders, and M. Ortmanns, “System level model for transcutaneous optical telemetric link,” in 2013 IEEE International Symposium on Circuits and Systems (ISCAS), May 2013, pp. 865–868. doi: 10.1109/ISCAS.2013.6571984.
 BibTeX
 @inproceedings{6571984, abstract = {This paper presents the system level model of a transcutaneous optical telemetric link (TOTL) system for neural recording. Varieties of noise sources are characterized. Power distribution is described by means of Gaussian model approximation. Strategies for designing of the optical receiver that maximize signal to noise ratio (SNR) are discussed. The system level model presented here allows designers to compromise the TOTL receiver design for certain constraints: data rate, power consumption, thickness of tissue and receiver size.}, author = {{Liu}, T. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2013 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2013.6571984}, issn = {2158-1525}, month = {05}, pages = {865-868}, title = {System level model for transcutaneous optical telemetric link}, url = {https://ieeexplore.ieee.org/document/6571984/;jsessionid=F_cWrBL1Yzuyyr0iy5JKvEaNMt_Ir47R5ae9EU_IgmlDtmarWeUd!-2081234952?reason=concurrency}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6571984/;jsessionid=F_cWrBL1Yzuyyr0iy5JKvEaNMt_Ir47R5ae9EU_IgmlDtmarWeUd!-2081234952?reason=concurrency
 DOI
 10.1109/ISCAS.2013.6571984
16. T. Liu, J. Anders, and M. Ortmanns, “Design optimization of the optical receiver in transcutaneous telemetric links,” in 2013 IEEE Biomedical Circuits and Systems Conference (BioCAS), Oct. 2013, pp. 346–349. doi: 10.1109/BioCAS.2013.6679710.
 BibTeX
 @inproceedings{6679710, abstract = {This paper presents a design methodology for an optimization of the optical receiver in a neural recording system. In the transcutaneous optical telemetric link (TOTL) system, light/tissue interaction produces significant scattering of the transmitted photons. Therefore, in order to increase the transmission efficiency, it is in principle advantageous to use a photodiode with a larger size to collect more scattered photons. The photodiode size, however, is limited by the bandwidth requirement. In this paper, we derive a mathematical expression of the maximum photodiode size in the presence of constraints imposed by its bias voltage and the receiver bandwidth. A numerical example using real-world TOTL system parameters is given to demonstrate the design methodology. The trade off between transmission efficiency, noise and inter-symbol interference (ISI) in terms of the 3-dB bandwidth of the receiver is investigated. To this end, receivers with bandwidth about 4/3, 3/3, 2/3 and 1/3 of the data rate are compared with respect to the sensitivity. It was found that the receiver bandwidth of 2/3 of the data rate achieves the highest sensitivity for thin tissue (2 mm) and that a receiver bandwidth of 1/3 of the data rate is preferable for thicker tissues (5 and 8 mm).}, author = {{Liu}, T. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {2013 IEEE Biomedical Circuits and Systems Conference (BioCAS)}, doi = {10.1109/BioCAS.2013.6679710}, issn = {2163-4025}, month = {10}, pages = {346-349}, title = {Design optimization of the optical receiver in transcutaneous telemetric links}, url = {https://ieeexplore.ieee.org/document/6679710/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6679710/
 DOI
 10.1109/BioCAS.2013.6679710
17. M. Lorenz, T. Bruckner, J. Anders, and M. Ortmanns, “An Advanced Unscented Kalman Filter Algorithm for Parameter Estimation in Continuous-Time Sigma-Delta Modulators,” 2013 Ieee 20th International Conference on Electronics, Circuits, and Systems (Icecs), pp. 545–548, 2013, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000339725900142
 - BibTeX
 - Link
 BibTeX
 @article{RN48, author = {Lorenz, M. and Bruckner, T. and Anders, J. and Ortmanns, M.}, journal = {2013 Ieee 20th International Conference on Electronics, Circuits, and Systems (Icecs)}, pages = {545-548}, title = {An Advanced Unscented Kalman Filter Algorithm for Parameter Estimation in Continuous-Time Sigma-Delta Modulators}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000339725900142}, year = 2013 }
 Link
 /brokenurl#://WOS:000339725900142
18. B. Schlecker, M. Ortmanns, J. Anders, and G. Fantner, “Novel electronics for high-speed FM-AFM in life science applications,” in 2013 European Conference on Circuit Theory and Design (ECCTD), Sep. 2013, pp. 1–4. doi: 10.1109/ECCTD.2013.6662241.
 BibTeX
 @inproceedings{6662241, abstract = {In this paper we present a novel system architecture for high-speed FM-AFM electronics. The proposed system consists of a PLL-based FM demodulator preceded by a SSB modulator and driving electronics ensuring a stable self-oscillation of the cantilever. Thanks to the SSB upconverion preceding the FM-demodulator, the system allows for demodulation bandwidths as large as the cantilever resonance frequency, opening up the way to real-time FM-AFM of biological processes. Electrical measurements of a PCB-based prototype verify the proposed architecture.}, author = {{Schlecker}, B. and {Ortmanns}, M. and {Anders}, J. and {Fantner}, G.}, booktitle = {2013 European Conference on Circuit Theory and Design (ECCTD)}, doi = {10.1109/ECCTD.2013.6662241}, month = {09}, pages = {1-4}, title = {Novel electronics for high-speed FM-AFM in life science applications}, url = {https://ieeexplore.ieee.org/document/6662241/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6662241/
 DOI
 10.1109/ECCTD.2013.6662241
19. B. Schlecker, M. Ortmanns, J. Anders, and G. Fantner, “PLL-based high-speed demodulation of FM signals for real-time AFM applications,” in 2013 IEEE International Symposium on Circuits and Systems (ISCAS), May 2013, pp. 197–200. doi: 10.1109/ISCAS.2013.6571816.
 BibTeX
 @inproceedings{6571816, abstract = {In this paper we present a new architecture for PLL-based high-speed demodulation of frequency-modulated AFM signals. In our approach, we use single-sideband frequency up-conversion to translate the AFM signal from the position sensitive detector to a fixed intermediate frequency of 10 MHz. In this way, we fully benefit from the excellent noise performance of PLL-based FM demodulators still avoiding the intrinsic bandwidth limitation of such systems. Furthermore, the system becomes independent of the cantilever's resonance frequency. To investigate if the additional noise introduced by the single-sideband upconverter degrades the system noise figure we present a model of the AM-to-FM noise conversion in the PLL phase detector. Using this model, we can predict an upper corner frequency for the demodulation bandwidth above which the converted noise from the single-sideband upconverter becomes the dominant noise source and therefore begins to deteriorate the overall system performance. The approach is validated by measured data obtained with a PCB-based prototype implementing the proposed demodulator architecture.}, author = {{Schlecker}, B. and {Ortmanns}, M. and {Anders}, J. and {Fantner}, G.}, booktitle = {2013 IEEE International Symposium on Circuits and Systems (ISCAS)}, doi = {10.1109/ISCAS.2013.6571816}, issn = {2158-1525}, month = {05}, pages = {197-200}, title = {PLL-based high-speed demodulation of FM signals for real-time AFM applications}, url = {https://ieeexplore.ieee.org/document/6571816/}, year = 2013 }
 Link
 https://ieeexplore.ieee.org/document/6571816/
 DOI
 10.1109/ISCAS.2013.6571816
2012
1. J. Albert, R. Banucu, V. Reinauer, C. Scheiblich, and W. M. Rucker, “Comparison of a Direct and a Vector Potential Integral Equation Method for the Computation of Eddy Currents,” IEEE Transactions on Magnetics, vol. 48, Art. no. 2, Feb. 2012.
 - BibTeX
 BibTeX
 @article{albert2012comparison, author = {Albert, Jan and Banucu, Remus and Reinauer, Veronika and Scheiblich, Christian and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, month = {02}, number = 2, pages = {599-602}, title = {Comparison of a Direct and a Vector Potential Integral Equation Method for the Computation of Eddy Currents}, volume = 48, year = 2012 }
2. J. Anders, M. Ortmanns, and G. Boero, “Frequency noise in current-starved CMOS LC tank oscillators,” in NDES 2012; Nonlinear Dynamics of Electronic Systems, Jul. 2012, pp. 1–4. [Online]. Available: https://ieeexplore.ieee.org/document/6293767
 - BibTeX
 - Link
 BibTeX
 @inproceedings{6293767, abstract = {In this paper we present analytical expressions for the frequency noise of a current-starved CMOS LC tank oscillator originating from the white noise in the coil resistance and the cross-coupled transistor pair. We derive our results by using a Langevin approach to account for the device noise and subsequently solving the resulting stochastic differential equation with the help of a combination of the Stratonovich stochastic averaging method and linearization around the trajectories of the smoothly averaged system.}, author = {{Anders}, J. and {Ortmanns}, M. and {Boero}, G.}, booktitle = {NDES 2012; Nonlinear Dynamics of Electronic Systems}, month = {07}, pages = {1-4}, title = {Frequency noise in current-starved CMOS LC tank oscillators}, url = {https://ieeexplore.ieee.org/document/6293767}, year = 2012 }
 Link
 https://ieeexplore.ieee.org/document/6293767
3. J. Anders, P. SanGiorgio, X. Deligianni, F. Santini, K. Scheffler, and G. Boero, “Integrated active tracking detector for MRI-guided interventions,” Magnetic Resonance in Medicine, vol. 67, Art. no. 1, 2012, doi: 10.1002/mrm.23112.
 BibTeX
 @article{RN63, author = {Anders, J. and SanGiorgio, P. and Deligianni, X. and Santini, F. and Scheffler, K. and Boero, G.}, doi = {10.1002/mrm.23112}, issn = {0740-3194}, journal = {Magnetic Resonance in Medicine}, number = 1, pages = {290-296}, title = {Integrated active tracking detector for MRI-guided interventions}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000298482800033}, volume = 67, year = 2012 }
 Link
 /brokenurl#://WOS:000298482800033
 DOI
 10.1002/mrm.23112
4. A. Buchau, M. Jüttner, and W. M. Rucker, “Automatic domain detection for a meshfree post-processing in boundary element methods,” in 15th International IGTE Symposium, Graz, 2012, pp. 386–391.
 - BibTeX
 BibTeX
 @inproceedings{buchau2012automatic, address = {Graz}, author = {Buchau, André and Jüttner, Matthias and Rucker, Wolfgang M.}, booktitle = {15th International IGTE Symposium}, pages = {386-391}, title = {Automatic domain detection for a meshfree post-processing in boundary element methods}, year = 2012 }
5. M. Jüttner, A. Buchau, M. Rauscher, and P. Göhner, “Software Agent Based Domain Decomposition Method,” in 15th International IGTE Symposium, Graz, Austria, 2012, pp. 89–94.
 - BibTeX
 BibTeX
 @inproceedings{juttner2012software, address = {Graz, Austria}, author = {Jüttner, Matthias and Buchau, André and Rauscher, Michael and Göhner, Peter}, booktitle = {15th International IGTE Symposium}, pages = {89-94}, title = {Software Agent Based Domain Decomposition Method}, year = 2012 }
6. J. G. Kauffman, V. Rieger, R. Ritter, J. Anders, and M. Ortmanns, “Design of a 5bit 1GSps VCO Quantizer for a CT Delta Sigma Modulator,” in PRIME 2012; 8th Conference on Ph.D. Research in Microelectronics Electronics, Jun. 2012, pp. 1–4. [Online]. Available: https://ieeexplore.ieee.org/document/6226117
 - BibTeX
 - Link
 BibTeX
 @inproceedings{6226117, abstract = {This paper presents the design of a 5 bit VCO quantizer with an alternative flipped cross-coupled delay element providing low KV nonlinearities compared to the commonly used current starved inverter delay element. The VCO is demonstrated within a third order continuous time (CT) delta sigma (?Sigma) modulator operating at an fS of 1 GHz with an OSR of only 10 . In using the frequency output of the VCO, fourth order noise shaping is present but with the stability of a third order multi-bit loop-filter. The schematic based VCO achieves a 50 dB linearity and 44.5 dB SNDR within a 50MHz bandwidth (BW) which provides 73.5 dB SNDR performance of the third order modulator with a frequency output VCO quantizer.}, author = {{Kauffman}, J. G. and {Rieger}, V. and {Ritter}, R. and {Anders}, J. and {Ortmanns}, M.}, booktitle = {PRIME 2012; 8th Conference on Ph.D. Research in Microelectronics Electronics}, month = {06}, pages = {1-4}, title = {Design of a 5bit 1GSps VCO Quantizer for a CT Delta Sigma Modulator}, url = {https://ieeexplore.ieee.org/document/6226117}, year = 2012 }
 Link
 https://ieeexplore.ieee.org/document/6226117
7. H. Li, C. de Boer, H. Hermes, A. Buchau, N. Klaas, and W. M. Rucker, “Development of an inductive concentration measurement sensor of nano sized zero valent iron,” in Systems, Signals and Devices (SSD), 2012 - 9th International Multi-Conference on Systems, Signals and Devices, Chemnitz, Germany, Mar. 2012, pp. 1–7. doi: 10.1109/SSD.2012.6198042.
 BibTeX
 @inproceedings{li2012development, abstract = {The injection of colloidal nano sized zero valent iron (nZVI) into a contaminated aquifer is a promising new in-situ groundwater remediation technique. An inductive sensor is presented to directly detect and measure the concentration of nZVI in the subsurface. The method is based on the inductive measurement of magnetic material properties of nZVI within an alternating magnetic field. The change of magnetic flux density generated by one coil is determined by measuring an induced voltage in a second coil. Numerical simulations with the finite element software COMSOL Multiphysics were performed to optimize the sensor design. Furthermore, these components were used to analyze the possible measuring range, taking into account the accuracy of the measuring device to be used. Since the susceptibility of nZVI in the aquifer is very small, it is necessary to use a background measurement to improve the sensitivity of the measurement system. Finally, the measuring concept was experimentally verified.}, address = {Chemnitz, Germany}, author = {Li, Hua and de Boer, Cjestmir and Hermes, Hubert and Buchau, André and Klaas, Norbert and Rucker, Wolfgang M.}, booktitle = {Systems, Signals and Devices (SSD), 2012 - 9th International Multi-Conference on Systems, Signals and Devices}, doi = {10.1109/SSD.2012.6198042}, month = {03}, pages = {1-7}, title = {Development of an inductive concentration measurement sensor of nano sized zero valent iron}, url = {https://ieeexplore.ieee.org/document/6198042/}, year = 2012 }
 Link
 https://ieeexplore.ieee.org/document/6198042/
 DOI
 10.1109/SSD.2012.6198042
8. V. Reinauer et al., “Object-Oriented Development of an Optimization Software in Java using Evolution Strategies,” IEEE Transactions on Magnetics, vol. 48, Art. no. 2, Feb. 2012.
 - BibTeX
 BibTeX
 @article{reinauer2012objectoriented, author = {Reinauer, Veronika and Magele, Christian and Scheiblich, Christian and Stermecki, Andrej and Banucu, Remus and Albert, Jan and Jaindl, Michael and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, month = {02}, number = 2, pages = {603-606}, title = {Object-Oriented Development of an Optimization Software in Java using Evolution Strategies}, volume = 48, year = 2012 }
2011
1. V. Badilita et al., “3d Solenoidal Microcoil Arrays with Cmos Integrated Amplifiers for Parallel Mr Imaging and Spectroscopy,” 2011 Ieee 24th International Conference on Micro Electro Mechanical Systems (Mems), pp. 809–812, 2011, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000295841200201
 - BibTeX
 - Link
 BibTeX
 @article{RN65, author = {Badilita, V. and Kratt, K. and Baxan, N. and Anders, J. and Elverfeldt, D. and Boero, G. and Hennig, J. and Korvink, J. G. and Wallrabe, U.}, issn = {1084-6999}, journal = {2011 Ieee 24th International Conference on Micro Electro Mechanical Systems (Mems)}, pages = {809-812}, title = {3d Solenoidal Microcoil Arrays with Cmos Integrated Amplifiers for Parallel Mr Imaging and Spectroscopy}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000295841200201}, year = 2011 }
 Link
 /brokenurl#://WOS:000295841200201
2. R. Banucu et al., “Design and Optimization of a Contactless Magnetically Levitated Actuator for 4-Axis-Machining,” IEEE Transactions on Magnetics, vol. 47, Art. no. 5, May 2011.
 - BibTeX
 BibTeX
 @article{banucu2011design, author = {Banucu, Remus and Albert, Jan and Scheiblich, Christian and Reinauer, Veronika and Rucker, Wolfgang M. and Hafla, Alexander and Huf, Alexander}, journal = {IEEE Transactions on Magnetics}, month = {05}, number = 5, pages = {1050-1053}, title = {Design and Optimization of a Contactless Magnetically Levitated Actuator for 4-Axis-Machining}, volume = 47, year = 2011 }
3. C. Scheiblich, R. Banucu, V. Reinauer, J. Albert, and W. M. Rucker, “Parallel Hierarchical Block Wavelet Compression for an Optimal Compression of 3-D BEM Problems,” IEEE Transactions on Magnetics, vol. 47, Art. no. 5, May 2011.
 - BibTeX
 BibTeX
 @article{scheiblich2011parallel, author = {Scheiblich, Christian and Banucu, Remus and Reinauer, Veronika and Albert, Jan and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, month = {05}, number = 5, pages = {1386-1389}, title = {Parallel Hierarchical Block Wavelet Compression for an Optimal Compression of 3-D BEM Problems}, volume = 47, year = 2011 }
2010
1. J. Albert, R. Banucu, V. Reinauer, C. Scheiblich, and W. M. Rucker, “Reduction of Degrees of Freedom for the Computation of Eddy Current Problems,” in 14th International IGTE Symposium 2010, Graz, Austria, 2010.
  - BibTeX
  BibTeX
  @inproceedings{albert2010reduction, address = {Graz, Austria}, author = {Albert, Jan and Banucu, Remus and Reinauer, Veronika and Scheiblich, Christian and Rucker, Wolfgang M.}, booktitle = {14th International IGTE Symposium 2010}, title = {Reduction of Degrees of Freedom for the Computation of Eddy Current Problems}, year = 2010 }
2. J. Anders, P. SanGiorgio, and G. Boero, “A quadrature receiver for μNMR applications in 0.13μm CMOS,” in 2010 Proceedings of ESSCIRC, Sep. 2010, pp. 394–397. doi: 10.1109/ESSCIRC.2010.5619726.
  BibTeX
  @inproceedings{5619726, abstract = {In this paper, we present a quadrature receiver for nuclear magnetic resonance applications. The receiver consists of a detection coil, a tuning capacitor, a low-noise amplifier, and quadrature down-conversion mixer with the corresponding baseband amplification stages. The quadrature local oscillator signals are generated on-chip from an external reference. The on-chip gain is 75dB and the input referred voltage noise density is 0.4nV/√Hz. The chip is realized in a 0.13μm IBM CMOS technology, consumes 45mA from a 1.8V supply and occupies an area of 600μm by 600 μm.}, author = {{Anders}, J. and {SanGiorgio}, P. and {Boero}, G.}, booktitle = {2010 Proceedings of ESSCIRC}, doi = {10.1109/ESSCIRC.2010.5619726}, issn = {1930-8833}, month = {09}, pages = {394-397}, title = {A quadrature receiver for μNMR applications in 0.13μm CMOS}, url = {https://ieeexplore.ieee.org/document/5619726/}, year = 2010 }
  Link
  https://ieeexplore.ieee.org/document/5619726/
  DOI
  10.1109/ESSCIRC.2010.5619726
3. R. Banucu et al., “Automated Optimization in the Design Process of a Magnetically Levitated Table for Machine Tool Applications,” IEEE Transactions on Magnetics, vol. 46, Art. no. 8, Aug. 2010.
  - BibTeX
  BibTeX
  @article{banucu2010automated, author = {Banucu, Remus and Albert, Jan and Scheiblich, Christian and Reinauer, Veronika and Rucker, Wolfgang M. and Hafla, Alexander and Huf, Alexander}, journal = {IEEE Transactions on Magnetics}, month = {08}, number = 8, pages = {2787-2790}, title = {Automated Optimization in the Design Process of a Magnetically Levitated Table for Machine Tool Applications}, volume = 46, year = 2010 }
4. R. Banucu, C. Scheiblich, J. Albert, V. Reinauer, and W. M. Rucker, “Acceleration of the BWC for a 3-D BEM Problem using Wavelet Approximation Patterns,” in 14th International IGTE Symposium 2010, Graz, Austria, 2010.
  - BibTeX
  BibTeX
  @inproceedings{banucu2010acceleration, address = {Graz, Austria}, author = {Banucu, Remus and Scheiblich, Christian and Albert, Jan and Reinauer, Veronika and Rucker, Wolfgang M.}, booktitle = {14th International IGTE Symposium 2010}, title = {Acceleration of the BWC for a 3-D BEM Problem using Wavelet Approximation Patterns}, year = 2010 }
5. A. Buchau and W. M. Rucker, “Meshfree Visualization of Field Lines in 3D,” in 14th International IGTE Symposium, Graz, 2010, pp. 172–177.
  - BibTeX
  BibTeX
  @inproceedings{buchau2010meshfree, address = {Graz}, author = {Buchau, André and Rucker, Wolfgang M.}, booktitle = {14th International IGTE Symposium}, pages = {172-177}, title = {Meshfree Visualization of Field Lines in 3D}, year = 2010 }
6. A. Buchau, W. M. Rucker, C. de Boer, and N. Klaas, “Inductive detection and concentration measurement of nano sized zero valent iron in the subsurface,” IET Science, Measurement and Technology, vol. 4, Art. no. 6, Nov. 2010, doi: 10.1049/iet-smt.2009.0116.
  BibTeX
  @article{buchau2010inductive, author = {Buchau, André and Rucker, Wolfgang M. and de Boer, Cjestmir and Klaas, Norbert}, doi = {10.1049/iet-smt.2009.0116}, journal = {IET Science, Measurement and Technology}, month = {11}, number = 6, pages = {289-297}, publisher = {Institution of Engineering and Technology ({IET})}, title = {Inductive detection and concentration measurement of nano sized zero valent iron in the subsurface}, url = {https://doi.org/10.1049%2Fiet-smt.2009.0116}, volume = 4, year = 2010 }
  Link
  https://doi.org/10.1049%2Fiet-smt.2009.0116
  DOI
  10.1049/iet-smt.2009.0116
7. V. Reinauer, C. Scheiblich, R. Banucu, J. Albert, and W. M. Rucker, “Object-Oriented Design of the Zienkiewicz-Zhu Method,” in 14th International IGTE Symposium 2010, Graz, Austria, 2010.
  - BibTeX
  BibTeX
  @inproceedings{reinauer2010objectoriented, address = {Graz, Austria}, author = {Reinauer, Veronika and Scheiblich, Christian and Banucu, Remus and Albert, Jan and Rucker, Wolfgang M.}, booktitle = {14th International IGTE Symposium 2010}, title = {Object-Oriented Design of the Zienkiewicz-Zhu Method}, year = 2010 }
8. C. Scheiblich, R. Banucu, V. Reinauer, J. Albert, and W. M. Rucker, “Parallel HWC of the Radiative Heat Transfer Matrix for a FEM-BEM Coupled Electric Heating System,” in 14th International IGTE Symposium 2010, Graz, Austria, 2010.
  - BibTeX
  BibTeX
  @inproceedings{scheiblich2010parallel, address = {Graz, Austria}, author = {Scheiblich, Christian and Banucu, Remus and Reinauer, Veronika and Albert, Jan and Rucker, Wolfgang M.}, booktitle = {14th International IGTE Symposium 2010}, title = {Parallel HWC of the Radiative Heat Transfer Matrix for a FEM-BEM Coupled Electric Heating System}, year = 2010 }
9. C. Scheiblich, R. Banucu, V. Reinauer, J. Albert, and W. M. Rucker, “Parallel Hierarchical Block Wavelet Compression for an Optimal Compression Rate of 3-D BEM Problems,” in 14th Biennial IEEE Conference on Electromagnetic Field Computation, Chicago, USA, 2010.
  - BibTeX
  BibTeX
  @inproceedings{scheiblich2010parallel, address = {Chicago, USA}, author = {Scheiblich, Christian and Banucu, Remus and Reinauer, Veronika and Albert, Jan and Rucker, Wolfgang M.}, booktitle = {14th Biennial IEEE Conference on Electromagnetic Field Computation}, title = {Parallel Hierarchical Block Wavelet Compression for an Optimal Compression Rate of 3-D BEM Problems}, year = 2010 }
2009
1. J. Albert, R. Banucu, W. Hafla, and W. M. Rucker, “Simulation Based Development of a Valve Actuator for Alternative Drives using BEM-FEM Code,” IEEE Transactions on Magnetics, vol. 45, Art. no. 3, Mar. 2009.
 - BibTeX
 BibTeX
 @article{albert2009simulation, author = {Albert, Jan and Banucu, Remus and Hafla, Wolfgang and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, month = {03}, number = 3, pages = {1744-1777}, title = {Simulation Based Development of a Valve Actuator for Alternative Drives using BEM-FEM Code}, volume = 45, year = 2009 }
2. J. Anders, J. Bremer, and W. Mathis, “Mixed-logic dynamical system modeling of ΣΔ-modulators and its application to stability analysis,” in 2009 IEEE International Symposium on Circuits and Systems, May 2009, pp. 3122–3125. doi: 10.1109/ISCAS.2009.5118464.
 BibTeX
 @inproceedings{5118464, abstract = {In this paper, a novel model for single-bit internal quantizer SigmaDelta-modulators is presented. It is shown that this model can be used for an exact stability prediction of these systems. Furthermore, it is explained how the necessary computations can be performed in a numerically efficient way by means of a mixed integer linear program (MILP).}, author = {{Anders}, J. and {Bremer}, J. and {Mathis}, W.}, booktitle = {2009 IEEE International Symposium on Circuits and Systems}, doi = {10.1109/ISCAS.2009.5118464}, issn = {2158-1525}, month = {05}, pages = {3122-3125}, title = {Mixed-logic dynamical system modeling of ΣΔ-modulators and its application to stability analysis}, url = {https://ieeexplore.ieee.org/document/5118464/}, year = 2009 }
 Link
 https://ieeexplore.ieee.org/document/5118464/
 DOI
 10.1109/ISCAS.2009.5118464
3. J. Anders, G. Chiaramonte, P. SanGiorgio, and G. Boero, “A single-chip array of NMR receivers,” Journal of Magnetic Resonance, vol. 201, Art. no. 2, 2009, doi: 10.1016/j.jmr.2009.09.019.
 BibTeX
 @article{RN66, author = {Anders, J. and Chiaramonte, G. and SanGiorgio, P. and Boero, G.}, doi = {10.1016/j.jmr.2009.09.019}, issn = {1090-7807}, journal = {Journal of Magnetic Resonance}, number = 2, pages = {239-249}, title = {A single-chip array of NMR receivers}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000272006600016}, volume = 201, year = 2009 }
 Link
 /brokenurl#://WOS:000272006600016
 DOI
 10.1016/j.jmr.2009.09.019
4. J. Anders, S. Reymond, G. Boero, and K. Scheffler, “A Low-Noise CMOS Receiver Frontend for NMR-based Surgical Guidance,” 13th International Conference on Biomedical Engineering, Vols 1-3, vol. 23, Art. no. 1–3, 2009, [Online]. Available: /brokenurl#<Go to ISI>://WOS:000268245600022
 - BibTeX
 - Link
 BibTeX
 @article{RN68, author = {Anders, J. and Reymond, S. and Boero, G. and Scheffler, K.}, issn = {1680-0737}, journal = {13th International Conference on Biomedical Engineering, Vols 1-3}, number = {1-3}, pages = {89-+}, title = {A Low-Noise CMOS Receiver Frontend for NMR-based Surgical Guidance}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000268245600022}, volume = 23, year = 2009 }
 Link
 /brokenurl#://WOS:000268245600022
5. J. Anders, P. SanGiorgio, and G. Boero, “An integrated CMOS receiver chip for NMR-applications,” in 2009 IEEE Custom Integrated Circuits Conference, Sep. 2009, pp. 471–474. doi: 10.1109/CICC.2009.5280786.
 BibTeX
 @inproceedings{5280786, abstract = {We present the first CMOS-only receiver chip for NMR-applications at 300 MHz. The system consists of an on-chip reception coil, a tuning-capacitor, a downconversion-mixer and a low-frequency gain-stage as well as biasing and offset-compensation circuitry. It has an input referred voltage noise density of 0.7 nV/radicHz and a gain of 75 dB. The power consumption is 18 mA from a single 3.3 V supply. The chip is realized in 0.35 mum technology and occupies an area of 1200 times 850 mum2.}, author = {{Anders}, J. and {SanGiorgio}, P. and {Boero}, G.}, booktitle = {2009 IEEE Custom Integrated Circuits Conference}, doi = {10.1109/CICC.2009.5280786}, issn = {2152-3630}, month = {09}, pages = {471-474}, title = {An integrated CMOS receiver chip for NMR-applications}, url = {https://ieeexplore.ieee.org/document/5280786/}, year = 2009 }
 Link
 https://ieeexplore.ieee.org/document/5280786/
 DOI
 10.1109/CICC.2009.5280786
6. A. Buchau, W. M. Rucker, U. Wössner, and M. Becker, “Augmented reality in teaching of electrodynamics,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 28, Art. no. 4, Jul. 2009, doi: 10.1108/03321640910959026.
 BibTeX
 @article{doi:10.1108/03321640910959026, author = {Buchau, André and Rucker, Wolfgang M. and Wössner, Uwe and Becker, Martin}, doi = {10.1108/03321640910959026}, editor = {Lowther, Oszk{\'{a}}r B{\'{\i}}r{\'{o}} David A.}, journal = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, month = {07}, number = 4, pages = {948-963}, publisher = {Emerald}, title = {Augmented reality in teaching of electrodynamics}, url = {/brokenurl# http://dx.doi.org/10.1108/03321640910959026 }, volume = 28, year = 2009 }
 Link
 /brokenurl# http://dx.doi.org/10.1108/03321640910959026
 DOI
 10.1108/03321640910959026
7. J. Lee et al., “A 2.5 mW 80 dB DR 36 dB SNDR 22 MS/s Logarithmic Pipeline ADC,” IEEE Journal of Solid-State Circuits, vol. 44, Art. no. 10, Oct. 2009, doi: 10.1109/JSSC.2009.2028052.
 BibTeX
 @article{5256979, abstract = {A switched-capacitor logarithmic pipeline analog-to-digital converter (ADC) that does not require squaring or any other complex analog function is presented. This approach is attractive where a high dynamic range (DR), but not a high peak SNDR, is required. A prototype signed, 8-bit 1.5 bit-per-stage logarithmic pipeline ADC is designed and fabricated in 0.18 mum CMOS. The 22 MS/s ADC achieves a measured DR of 80 dB and a measured SNDR of 36 dB, occupies 0.56 mm2, and consumes 2.54 mW from a 1.62 V supply. The measured dynamic range figure of merit is 174 dB.}, author = {{Lee}, J. and {Kang}, J. and {Park}, S. and {Seo}, J. and {Anders}, J. and {Guilherme}, J. and {Flynn}, M. P.}, doi = {10.1109/JSSC.2009.2028052}, issn = {1558-173X}, journal = {IEEE Journal of Solid-State Circuits}, month = {10}, number = 10, pages = {2755-2765}, title = {A 2.5 mW 80 dB DR 36 dB SNDR 22 MS/s Logarithmic Pipeline ADC}, url = {https://ieeexplore.ieee.org/document/5256979/}, volume = 44, year = 2009 }
 Link
 https://ieeexplore.ieee.org/document/5256979/
 DOI
 10.1109/JSSC.2009.2028052
8. C. Scheiblich, R. Banucu, J. Albert, V. Reinauer, and W. M. Rucker, “Hierarchical Block Wavelet Compression for BEM Problems of Arbitrary Dimension,” in 17th Conference on the Computation of Electromagnetic Fields, Florianopolis, Brazil, 2009, pp. 57–58.
 - BibTeX
 BibTeX
 @inproceedings{scheiblich2009hierarchical, address = {Florianopolis, Brazil}, author = {Scheiblich, Christian and Banucu, Remus and Albert, Jan and Reinauer, Veronika and Rucker, Wolfgang M.}, booktitle = {17th Conference on the Computation of Electromagnetic Fields}, pages = {57-58}, title = {Hierarchical Block Wavelet Compression for BEM Problems of Arbitrary Dimension}, year = 2009 }
9. C. Scheiblich, V. Kolitsas, and W. M. Rucker, “Compression of the Radiative Heat Transfer BEM Matrix of an Inductive Heating System using a Block-Oriented Wavelet Transform,” IEEE Transactions on Magnetics, vol. 45, Art. no. 3, Mar. 2009.
 - BibTeX
 BibTeX
 @article{scheiblich2009compression, author = {Scheiblich, Christian and Kolitsas, Vassilios and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, month = {03}, number = 3, pages = {1712-1715}, title = {Compression of the Radiative Heat Transfer BEM Matrix of an Inductive Heating System using a Block-Oriented Wavelet Transform}, volume = 45, year = 2009 }
2008
1. J. Anders and G. Boero, “A low-noise CMOS receiver frontend for MRI,” in 2008 IEEE Biomedical Circuits and Systems Conference, Nov. 2008, pp. 165–168. doi: 10.1109/BIOCAS.2008.4696900.
 BibTeX
 @inproceedings{4696900, abstract = {In this paper a novel architecture for an integrated receiver front-end for micro magnetic resonance imaging (micro-MRI) applications is described. While the chip consumes only 9 mA supply current (4 mA in the LNA and 5 mA in the output buffer) from a 3.3 V power supply, it has a measured input referred noise density of only 0.6 nV/radic(Hz). The receiver consists of a reception coil, an on-chip tuning capacitor, a low-noise amplifier, and a 50 Omega output buffer. The system is designed for operation in a B0-field of 7 T corresponding to a frequency of 300 MHz. It is implemented in a 0.35 mum CMOS high-voltage process and occupies a chip area of 850 mum times 500 mum.}, author = {{Anders}, J. and {Boero}, G.}, booktitle = {2008 IEEE Biomedical Circuits and Systems Conference}, doi = {10.1109/BIOCAS.2008.4696900}, issn = {2163-4025}, month = {11}, pages = {165-168}, title = {A low-noise CMOS receiver frontend for MRI}, url = {https://ieeexplore.ieee.org/document/4696900/}, year = 2008 }
 Link
 https://ieeexplore.ieee.org/document/4696900/
 DOI
 10.1109/BIOCAS.2008.4696900
2. J. Anders, W. Mathis, and M. Ortmanns, “A new optimization approach for the automatic design of Sigma Delta-modulators,” Proceedings of 2008 Ieee International Symposium on Circuits and Systems, Vols 1-10, p. 1432–+, 2008, doi: Doi 10.1109/Iscas.2008.4541697.
 BibTeX
 @article{RN9, author = {Anders, J. and Mathis, W. and Ortmanns, M.}, doi = {Doi 10.1109/Iscas.2008.4541697}, issn = {0271-4302}, journal = {Proceedings of 2008 Ieee International Symposium on Circuits and Systems, Vols 1-10}, pages = {1432-+}, title = {A new optimization approach for the automatic design of Sigma Delta-modulators}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000258532101089}, year = 2008 }
 Link
 /brokenurl#://WOS:000258532101089
 DOI
 Doi 10.1109/Iscas.2008.4541697
3. J. Anders, W. Mathis, and M. Ortmanns, “A new optimization approach for the automatic design of ΣΔ-modulators,” in 2008 IEEE International Symposium on Circuits and Systems, May 2008, pp. 1432–1435. doi: 10.1109/ISCAS.2008.4541697.
 BibTeX
 @inproceedings{4541697, abstract = {In this paper, a new methodology for the automated design of one-bit internal quantizer SigmaDelta-modulators is presented. The core of the method is an NTF prototype generation in the DT-domain based on the quasilinear quantizer modeling, that maximizes the maximum stable amplitude (MSA) of the modulator while achieving a certain minimum peak SNDR. For CT-modulator's, this is followed by a DT-CT mapping of the loop filter in state-space. The improved MSA allows for higher circuit noise and thus greatly relaxes the area and power consumption constraints of the design. Simulation results at the end of the paper verify the validity of the method.}, author = {{Anders}, J. and {Mathis}, W. and {Ortmanns}, M.}, booktitle = {2008 IEEE International Symposium on Circuits and Systems}, doi = {10.1109/ISCAS.2008.4541697}, issn = {2158-1525}, month = {05}, pages = {1432-1435}, title = {A new optimization approach for the automatic design of ΣΔ-modulators}, url = {https://ieeexplore.ieee.org/document/4541697/}, year = 2008 }
 Link
 https://ieeexplore.ieee.org/document/4541697/
 DOI
 10.1109/ISCAS.2008.4541697
4. A. Buchau, S. M. Tsafak, W. Hafla, and W. M. Rucker, “Parallelization of a Fast Multipole Boundary Element Method with Cluster OpenMP,” IEEE Transactions on Magnetics, vol. 44, Art. no. 6, Jun. 2008, doi: 10.1109/TMAG.2007.916262.
 BibTeX
 @article{buchau2008parallelization, abstract = {Parallelization of a boundary element method for the solution of problems, which are based on a Laplace equation, is considered. The fast multipole method is applied to compress the belonging linear system of equations. The well-known parallelization standard OpenMP is used on shared memory computers and the new standard Cluster OpenMP is used on computer clusters. Both standards are based on multithreading and exploit multicore processors very efficiently. Cluster OpenMP is an enhancement of OpenMP. There, multiprocessing on a computer cluster is hidden by virtual threads, which use a virtual shared memory on a distributed memory computer.}, author = {Buchau, André and Tsafak, Serge Mboonjou and Hafla, Wolfgang and Rucker, Wolfgang M.}, doi = {10.1109/TMAG.2007.916262}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {06}, number = 6, pages = {1338-1341}, title = {Parallelization of a Fast Multipole Boundary Element Method with Cluster OpenMP}, url = {https://ieeexplore.ieee.org/document/4526815/}, volume = 44, year = 2008 }
 Link
 https://ieeexplore.ieee.org/document/4526815/
 DOI
 10.1109/TMAG.2007.916262
5. W. Hafla, A. Buchau, and W. M. Rucker, “Consideration of Scalar Magnetic Hysteresis with the Integral Equation Method,” IEEE Transactions on Magnetics, vol. 44, Art. no. 6, Jun. 2008, doi: 10.1109/TMAG.2007.916170.
 BibTeX
 @article{hafla2008consideration, abstract = {Magnetic field problems can be accurately solved with the integral equation method in combination with a total scalar potential approach. However, only nonhysteretic magnetic material has been considered so far. Therefore, in this paper a novel formulation is presented that allows for the coupling of hysteresis models with the integral equation method. It has been investigated with the scalar hysteresis Product Model.}, author = {Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang M.}, doi = {10.1109/TMAG.2007.916170}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {06}, number = 6, pages = {910-913}, title = {Consideration of Scalar Magnetic Hysteresis with the Integral Equation Method}, url = {https://ieeexplore.ieee.org/document/4526880/}, volume = 44, year = 2008 }
 Link
 https://ieeexplore.ieee.org/document/4526880/
 DOI
 10.1109/TMAG.2007.916170
6. W. Hafla, A. Buchau, and W. M. Rucker, “Field Computation with the Integral Equation Method and Non-linear Orthotropic Materials,” in XX Symposium on Electromagnetic Phenomena in Nonlinear Circuits (EPNC 2008), Lille, 2008.
 - BibTeX
 BibTeX
 @inproceedings{hafla2008field, address = {Lille}, author = {Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang M.}, booktitle = {XX Symposium on Electromagnetic Phenomena in Nonlinear Circuits (EPNC 2008)}, title = {Field Computation with the Integral Equation Method and Non-linear Orthotropic Materials}, year = 2008 }
7. C. Scheiblich, V. Kolitsas, and W. M. Rucker, “Compression of the Radiative Heat Transfer BEM Matrix of an Inductive Heating System using a Block-Oriented Wavelet Transform,” in Proceedings of 13th Biennial IEEE Conference on Electromagnetic Field Computation, Greece, Athens, 2008, p. 186.
 - BibTeX
 BibTeX
 @inproceedings{scheiblich2008compression, address = {Greece, Athens}, author = {Scheiblich, Christian and Kolitsas, Vassilios and Rucker, Wolfgang M.}, booktitle = {Proceedings of 13th Biennial IEEE Conference on Electromagnetic Field Computation}, pages = 186, title = {Compression of the Radiative Heat Transfer BEM Matrix of an Inductive Heating System using a Block-Oriented Wavelet Transform}, year = 2008 }
2007
1. J. Albert, W. Hafla, A. Buchau, and W. M. Rucker, “Eddy Currents and Lorentz Forces in Pulsed Magnetic Forming,” Advanced Computer Techniques in Applied Electromagnetics, vol. 30, pp. 16–20, 2007, doi: 10.3233/978-1-58603-895-3-16.
  - BibTeX
  - DOI
  BibTeX
  @article{currents, author = {Albert, Jan and Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang M.}, doi = {10.3233/978-1-58603-895-3-16}, journal = {Advanced Computer Techniques in Applied Electromagnetics}, pages = {16-20}, title = {Eddy Currents and Lorentz Forces in Pulsed Magnetic Forming}, volume = 30, year = 2007 }
  DOI
  10.3233/978-1-58603-895-3-16
2. J. Anders, S. Krishnan, and G. Gronthoud, “Re-Configuration of Sub-blocks for Effective Application of Time Domain Tests,” in 2007 Design, Automation Test in Europe Conference Exhibition, Apr. 2007, pp. 1–6. doi: 10.1109/DATE.2007.364678.
  BibTeX
  @inproceedings{4211883, abstract = {AC sensitivities guide most analogue automatic test pattern generator (AATPG) while determining the optimal frequencies of a sinusoidal test stimulus. The optimal frequencies thus determined, normally lie in the close vicinity of the operating frequency of the circuit. Although these frequencies are justifiable by the principles of the circuit, these test frequencies do not bring any added value to the ultimate goal of cheap alternatives (low frequency test signal and cheaper measurement equipment) for the analogue and RF tests. In this paper, we propose to re-configure the circuit blocks, in such a way that the operating frequencies of the respective sub-block are shifted to lower testable frequencies. We have validated our proposal on a sub-block of a satellite receiver circuit that resulted in lowering the test frequencies of the corresponding sub-blocks from 12 GHz to 4MHz, while attaining the same level of defect coverage}, author = {{Anders}, J. and {Krishnan}, S. and {Gronthoud}, G.}, booktitle = {2007 Design, Automation Test in Europe Conference Exhibition}, doi = {10.1109/DATE.2007.364678}, issn = {1558-1101}, month = {04}, pages = {1-6}, title = {Re-Configuration of Sub-blocks for Effective Application of Time Domain Tests}, url = {https://ieeexplore.ieee.org/document/4211883/}, year = 2007 }
  Link
  https://ieeexplore.ieee.org/document/4211883/
  DOI
  10.1109/DATE.2007.364678
3. J. Anders and W. Mathis, “On the modeling and the stability of continuous-time ΣΔ-Modulators,” in 2007 IEEE International Symposium on Circuits and Systems, May 2007, pp. 9–12. doi: 10.1109/ISCAS.2007.378130.
  BibTeX
  @inproceedings{4252558, abstract = {In this paper an exact state equivalency including the input signal between continuous-time (CT) ΣΔ modulators and their discrete-time (DT) counterparts is derived. The equivalency is then generalized to include the very important non-ideal effect of excess loop-delay, that plays a crucial role in continuous-time modulators. With this new state-space equivalency, an efficient tool for stability analysis based on continuous-time describing functions is introduced. In the end, it is explained how these findings can be used for a MATLAB toolbox for continuous-time modulators that complements the well-known Schreier-toolbox for discrete-time modulators.}, author = {{Anders}, J. and {Mathis}, W.}, booktitle = {2007 IEEE International Symposium on Circuits and Systems}, doi = {10.1109/ISCAS.2007.378130}, issn = {2158-1525}, month = {05}, pages = {9-12}, title = {On the modeling and the stability of continuous-time ΣΔ-Modulators}, url = {https://ieeexplore.ieee.org/document/4252558/}, year = 2007 }
  Link
  https://ieeexplore.ieee.org/document/4252558/
  DOI
  10.1109/ISCAS.2007.378130
4. A. Buchau, W. Hafla, and W. M. Rucker, “Accuracy Investigations of Boundary Element Methods for the Solution of Laplace Equations,” IEEE Transactions on Magnetics, vol. 43, Art. no. 4, Apr. 2007, doi: 10.1109/TMAG.2007.892304.
  BibTeX
  @article{buchau2007accuracy, abstract = {Boundary element methods (BEMs) are approved methods for an efficient numerical solution of problems, which are based on a Laplace equation. Here, the solution of electrostatic field problems, steady current flow field problems, and magnetostatic field problems is considered. Focus of this paper is on investigations of accuracy of direct formulations, which are based on Green's theorem. Different types of coupling of computational domains are examined with respect to accuracy and convergence behavior of iterative solvers of the linear system of equations. Furthermore, the influence of singular and nearly singular integrals and the influence of matrix compression techniques to the accuracy of the solution are observed}, author = {Buchau, André and Hafla, Wolfgang and Rucker, Wolfgang M.}, doi = {10.1109/TMAG.2007.892304}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {04}, number = 4, pages = {1225-1228}, title = {Accuracy Investigations of Boundary Element Methods for the Solution of Laplace Equations}, url = {https://ieeexplore.ieee.org/document/4137676/}, volume = 43, year = 2007 }
  Link
  https://ieeexplore.ieee.org/document/4137676/
  DOI
  10.1109/TMAG.2007.892304
5. A. Buchau, S. M. Tsafak, W. Hafla, and W. M. Rucker, “Parallelization of a Fast Multipole Boundary Element Method with Cluster OpenMP,” in 16th Conference on the Computation of Electromagnetic Fields Compumag 2007, Aachen, 2007, pp. 791–792.
  - BibTeX
  BibTeX
  @inproceedings{buchau2007parallelization, address = {Aachen}, author = {Buchau, André and Tsafak, Serge Mboonjou and Hafla, Wolfgang and Rucker, Wolfgang M.}, booktitle = {16th Conference on the Computation of Electromagnetic Fields Compumag 2007}, pages = {791-792}, title = {Parallelization of a Fast Multipole Boundary Element Method with Cluster OpenMP}, year = 2007 }
6. W. Hafla, A. Buchau, and W. M. Rucker, “Force Computation with the Integral Equation Method,” Advanced Computer Techniques in Applied Electromagnetics, vol. 30, pp. 93–97, 2007, doi: 10.3233/978-1-58603-895-3-93.
  - BibTeX
  - DOI
  BibTeX
  @article{noauthororeditor, author = {Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang M.}, doi = {10.3233/978-1-58603-895-3-93}, journal = {Advanced Computer Techniques in Applied Electromagnetics}, pages = {93-97}, title = {Force Computation with the Integral Equation Method}, volume = 30, year = 2007 }
  DOI
  10.3233/978-1-58603-895-3-93
7. W. Hafla, A. Buchau, W. M. Rucker, A. Weinläder, and A. Bardakcioglu, “Efficient post‐processing with the integral equation method,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 26, Art. no. 3, Jan. 2007, doi: 10.1108/03321640710751280.
  BibTeX
  @article{wolfgang2007efficient, abstract = {Purpose– To show for magnetostatic problems, how the numerically expensive post‐processing with the integral equation method (IEM) can be accelerated with the fast multipole method (FMM) and how this approach can be used to generate post‐processing data that allow for drawing streamlines.Design/methodology/approach– In general, post‐processing with the IEM requires computation of the induced field due to solution variables, the field of permanent magnets and of free currents. For each of the three parts an approach to apply the FMM. With these approaches, large numbers of evaluation points can be used which are needed when streamlines are to be drawn. It is shown that this requires specially tailored meshes.Findings– Post‐processing time can be largely reduced by applying the FMM. Additional memory requirements are acceptable even for high numbers of evaluation points. In order to obtain streamline breaks at material discontinuities, flat volume elements can be used.Research limitations/implications– The presented application of the FMM is applicable only to static problems.Practical implications– Application of the FMM during post‐processing allows for a large number of evaluation points which are often required to visualize electromagnetic fields. This approach in combination with specially tailored meshes allows for drawing of streamlines.Originality/value– The FMM is used not only to solve the field problem, but also for post‐processing which requires using the FMM to compute induced magnetic fields as well as the field due to permanent magnets and free currents. This leads to a speedup which allows for a large number of evaluation points which can be used, e.g. for high‐precision drawing of streamlines.}, author = {Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang M. and Weinläder, Andreas and Bardakcioglu, Antoni}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640710751280}, issn = {03321649}, month = {01}, number = 3, pages = {873--887}, publisher = {Emerald Group Publishing Limited}, title = {Efficient post‐processing with the integral equation method}, url = {https://doi.org/10.1108/03321640710751280}, volume = 26, year = 2007 }
  Link
  https://doi.org/10.1108/03321640710751280
  DOI
  10.1108/03321640710751280
8. W. Hafla, A. Buchau, W. M. Rucker, A. Weinläder, and B. Klotz, “Efficient design analysis of a novel magnetic gear on a high performance computer,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 26, Art. no. 3, Jan. 2007, doi: 10.1108/03321640710751172.
  BibTeX
  @article{wolfgang2007efficient, abstract = {Purpose– Aims to show that efficiency and accuracy of integral equation methods (IEMs) in combination with the fast multipole method for the design of a novel magnetic gear.Design/methodology/approach– A novel magnetic gear was developed. Magnetic fields and torque of the gear were simulated based on IEMs. The fast multipole method was applied to compress the matrix of the belonging linear system of equations. A computer cluster was used to achieve numerical results within an acceptable time. A three‐dimensional post‐processing and visualization of magnetic fields enables a deep understanding of the gear.Findings– IEMs are very well suited for the numerical analysis of a magnetic gear. Especially, the treatment of the air gap between the rotating components, which move with significant varying velocities, is relatively easy. Furthermore, a correct computation and visualization of flux lines is possible. A magnetic gear is advantageous for high rotational velocities.Research limitations/implications– A quasi static numerical simulation has sufficed for an understanding of the principle of the magnetic gear and for the development of a prototype.Practical implications– IEMs are very suitable for the analysis of complex problems with moving parts. Nowadays, the efficiency is very good even for large problems, since matrix compression techniques are well‐engineered.Originality/value– The design of a novel magnetic gear is discussed. Well‐known techniques like IEMs, fast multipole method and parallel computing are combined to solve a very large and complex problem.}, author = {Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang M. and Weinläder, Andreas and Klotz, Benjamin}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640710751172}, issn = {03321649}, month = {01}, number = 3, pages = {712--726}, publisher = {Emerald Group Publishing Limited}, title = {Efficient design analysis of a novel magnetic gear on a high performance computer}, url = {https://doi.org/10.1108/03321640710751172}, volume = 26, year = 2007 }
  Link
  https://doi.org/10.1108/03321640710751172
  DOI
  10.1108/03321640710751172
9. J. Lee, S. Park, J. Kang, J. Seo, J. Anders, and M. Flynn, “A 2.5mW 80dB DR 36dB SNDR 22MS/s Logarithmic Pipeline ADC,” in 2007 IEEE Symposium on VLSI Circuits, Jun. 2007, pp. 194–195. doi: 10.1109/VLSIC.2007.4342711.
  BibTeX
  @inproceedings{4342711, abstract = {A switched-capacitor logarithmic pipeline ADC scheme that does not require squaring or any other complex analog functions is described. This approach is ideal where a high dynamic range, but not a high peak SNDR, is required. A signed, 8-bit 1.5 bit-per-stage logarithmic pipeline ADC is implemented in 0.18μm CMOS. The 22MS/s ADC achieves a measured DR of 80dB and a measured SNDR of 36dB, occupies 0.56mm2, and consumes 2.54mW from a 1.62V supply. The measured dynamic range figure of merit is 174dB.}, author = {{Lee}, J. and {Park}, S. and {Kang}, J. and {Seo}, J. and {Anders}, J. and {Flynn}, M.}, booktitle = {2007 IEEE Symposium on VLSI Circuits}, doi = {10.1109/VLSIC.2007.4342711}, issn = {2158-5636}, month = {06}, pages = {194-195}, title = {A 2.5mW 80dB DR 36dB SNDR 22MS/s Logarithmic Pipeline ADC}, url = {https://ieeexplore.ieee.org/document/4342711/}, year = 2007 }
  Link
  https://ieeexplore.ieee.org/document/4342711/
  DOI
  10.1109/VLSIC.2007.4342711
10. W. M. Rucker, A. Buchau, and W. Hafla, “Verschleißfreie magnetische Getriebe - Übertragung von Kräften über magnetische Felder,” Wechselwirkungen - Jahrbuch aus Lehre und Forschung der Universität Stuttgart, pp. 64–71, 2007.
  - BibTeX
  BibTeX
  @article{rucker2007verschleifreie, author = {Rucker, Wolfgang M. and Buchau, André and Hafla, Wolfgang}, journal = {Wechselwirkungen - Jahrbuch aus Lehre und Forschung der Universität Stuttgart}, pages = {64-71}, title = {Verschleißfreie magnetische Getriebe - Übertragung von Kräften über magnetische Felder}, year = 2007 }
11. C. Scheiblich, K. Frenner, and W. M. Rucker, “Coupling Thermal Radiation to an Inductive Heating Computation,” in Proceedings of International Symposium on Electromagnetic Fields in Electrical Engineering - ISEF 2007, Prag, 2007, pp. 449–450.
  - BibTeX
  BibTeX
  @inproceedings{scheiblich2007coupling, address = {Prag}, author = {Scheiblich, Christian and Frenner, Karsten and Rucker, Wolfgang M.}, booktitle = {Proceedings of International Symposium on Electromagnetic Fields in Electrical Engineering - ISEF 2007}, pages = {449-450}, title = {Coupling Thermal Radiation to an Inductive Heating Computation}, year = 2007 }
12. H. Wolfgang, B. André, R. W. M., W. Andreas, and B. Antoni, “Efficient post‐processing with the integral equation method,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 26, Art. no. 3, Jan. 2007, doi: 10.1108/03321640710751280.
  BibTeX
  @article{wolfgang2007efficient, abstract = {Purpose– To show for magnetostatic problems, how the numerically expensive post‐processing with the integral equation method (IEM) can be accelerated with the fast multipole method (FMM) and how this approach can be used to generate post‐processing data that allow for drawing streamlines.Design/methodology/approach– In general, post‐processing with the IEM requires computation of the induced field due to solution variables, the field of permanent magnets and of free currents. For each of the three parts an approach to apply the FMM. With these approaches, large numbers of evaluation points can be used which are needed when streamlines are to be drawn. It is shown that this requires specially tailored meshes.Findings– Post‐processing time can be largely reduced by applying the FMM. Additional memory requirements are acceptable even for high numbers of evaluation points. In order to obtain streamline breaks at material discontinuities, flat volume elements can be used.Research limitations/implications– The presented application of the FMM is applicable only to static problems.Practical implications– Application of the FMM during post‐processing allows for a large number of evaluation points which are often required to visualize electromagnetic fields. This approach in combination with specially tailored meshes allows for drawing of streamlines.Originality/value– The FMM is used not only to solve the field problem, but also for post‐processing which requires using the FMM to compute induced magnetic fields as well as the field due to permanent magnets and free currents. This leads to a speedup which allows for a large number of evaluation points which can be used, e.g. for high‐precision drawing of streamlines.}, author = {Wolfgang, Hafla and André, Buchau and M., Rucker Wolfgang and Andreas, Weinläder and Antoni, Bardakcioglu}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640710751280}, issn = {03321649}, month = {01}, number = 3, pages = {873--887}, publisher = {Emerald Group Publishing Limited}, title = {Efficient post‐processing with the integral equation method}, url = {https://doi.org/10.1108/03321640710751280}, volume = 26, year = 2007 }
  Link
  https://doi.org/10.1108/03321640710751280
  DOI
  10.1108/03321640710751280
13. H. Wolfgang, B. André, R. W. M., W. Andreas, and K. Benjamin, “Efficient design analysis of a novel magnetic gear on a high performance computer,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 26, Art. no. 3, Jan. 2007, doi: 10.1108/03321640710751172.
  BibTeX
  @article{wolfgang2007efficient, abstract = {Purpose– Aims to show that efficiency and accuracy of integral equation methods (IEMs) in combination with the fast multipole method for the design of a novel magnetic gear.Design/methodology/approach– A novel magnetic gear was developed. Magnetic fields and torque of the gear were simulated based on IEMs. The fast multipole method was applied to compress the matrix of the belonging linear system of equations. A computer cluster was used to achieve numerical results within an acceptable time. A three‐dimensional post‐processing and visualization of magnetic fields enables a deep understanding of the gear.Findings– IEMs are very well suited for the numerical analysis of a magnetic gear. Especially, the treatment of the air gap between the rotating components, which move with significant varying velocities, is relatively easy. Furthermore, a correct computation and visualization of flux lines is possible. A magnetic gear is advantageous for high rotational velocities.Research limitations/implications– A quasi static numerical simulation has sufficed for an understanding of the principle of the magnetic gear and for the development of a prototype.Practical implications– IEMs are very suitable for the analysis of complex problems with moving parts. Nowadays, the efficiency is very good even for large problems, since matrix compression techniques are well‐engineered.Originality/value– The design of a novel magnetic gear is discussed. Well‐known techniques like IEMs, fast multipole method and parallel computing are combined to solve a very large and complex problem.}, author = {Wolfgang, Hafla and André, Buchau and M., Rucker Wolfgang and Andreas, Weinläder and Benjamin, Klotz}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640710751172}, issn = {03321649}, month = {01}, number = 3, pages = {712--726}, publisher = {Emerald Group Publishing Limited}, title = {Efficient design analysis of a novel magnetic gear on a high performance computer}, url = {https://doi.org/10.1108/03321640710751172}, volume = 26, year = 2007 }
  Link
  https://doi.org/10.1108/03321640710751172
  DOI
  10.1108/03321640710751172
2006
1. A. Buchau, W. Hafla, and W. M. Rucker, “Analysis of electric fields and currents in printed circuit boards with boundary element methods,” in Book of Abstracts, IABEM 2006 Conference, Graz, 2006, pp. 317–320.
  - BibTeX
  BibTeX
  @inproceedings{buchau2006analysis, address = {Graz}, author = {Buchau, André and Hafla, Wolfgang and Rucker, Wolfgang M.}, booktitle = {Book of Abstracts, IABEM 2006 Conference}, pages = {317-320}, title = {Analysis of electric fields and currents in printed circuit boards with boundary element methods}, year = 2006 }
2. A. Buchau, W. Hafla, and W. M. Rucker, “Accuracy investigations of boundary element methods for the solution of Laplace equations,” in Digest Book of CEFC 2006, Miami, 2006, p. 18.
  - BibTeX
  BibTeX
  @inproceedings{buchau2006accuracy, address = {Miami}, author = {Buchau, André and Hafla, Wolfgang and Rucker, Wolfgang M.}, booktitle = {Digest Book of CEFC 2006}, pages = 18, title = {Accuracy investigations of boundary element methods for the solution of Laplace equations}, year = 2006 }
3. K. Frenner, C. Scheiblich, and W. M. Rucker, “Construction and Classification of Form Functions for the Galerkin-Hodge Discretization using Group Theory,” in Proceedings of 12th International IGTE Symposium, Graz, 2006, pp. 390–393.
  - BibTeX
  BibTeX
  @inproceedings{frenner2006construction, address = {Graz}, author = {Frenner, Karsten and Scheiblich, Christian and Rucker, Wolfgang M.}, booktitle = {Proceedings of 12th International IGTE Symposium}, pages = {390-393}, title = {Construction and Classification of Form Functions for the Galerkin-Hodge Discretization using Group Theory}, year = 2006 }
4. W. Hafla, A. Buchau, W. Rucker, A. Weinläder, and A. Bardakcioglu, “Efficient Post-Processing with the Integral Equation Method,” in Proceedings of 12th International IGTE Symposium, 2006, pp. 428–433.
  - BibTeX
  BibTeX
  @inproceedings{WolfgangHafla2006a, __markedentry = {[xtl:6]}, author = {Hafla, W. and Buchau, A. and Rucker, W. and Weinläder, A. and Bardakcioglu, A.}, booktitle = {Proceedings of 12th International IGTE Symposium}, pages = {428-433}, title = {Efficient Post-Processing with the Integral Equation Method}, year = 2006 }
5. W. Hafla, F. Groh, A. Buchau, and W. M. Rucker, “Magnetic field computation with integral equation method and energy-controlled relaxation,” IEEE Transactions on Magnetics, vol. 42, Art. no. 4, Apr. 2006, doi: 10.1109/TMAG.2006.871598.
  BibTeX
  @article{1608307, abstract = {The magnetic field integral equation method is applied to linear and nonlinear magnetostatic problems. Two drawbacks of this method, the slow convergence rate and the dense system matrix, are tackled. The convergence behavior is improved by a novel algorithm that determines adaptive relaxation factors at every iteration step by an energy minimum principle. The dense matrix is compressed with the fast multipole method}, author = {{Hafla}, W. and {Groh}, F. and {Buchau}, A. and {Rucker}, W. M.}, doi = {10.1109/TMAG.2006.871598}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {04}, number = 4, pages = {719-722}, title = {Magnetic field computation with integral equation method and energy-controlled relaxation}, url = {https://ieeexplore.ieee.org/document/1608307/}, volume = 42, year = 2006 }
  Link
  https://ieeexplore.ieee.org/document/1608307/
  DOI
  10.1109/TMAG.2006.871598
6. W. Hafla, A. Buchau, A. Bardakcioglu, C. Scheiblich, and W. M. Rucker, “Fuzzy Logic Adaptive Mesh Refinement for 3D Nonlinear Magnetostatic Problems Using Integral Equation Method,” in Digest Book of CEFC 2006, Miami, Apr. 2006, p. 118. doi: 10.1109/CEFC-06.2006.1632911.
  BibTeX
  @inproceedings{hafla2006fuzzy, abstract = {Adaptive mesh refinement for the solution of nonlinear magnetostatic field problems is used to improve the ratio between computational costs and accuracy. Although various local refinement indicators can be used to rate the local mesh density, often only a few of them are considered in combination. Since an increased number of indicators allows for better control of mesh refinement, an expert system based on fuzzy logic has been developed. it was used with the integral equation method and the field problem setup of TEAM Workshop Problem 20}, address = {Miami}, author = {Hafla, Wolfgang and Buchau, André and Bardakcioglu, A. and Scheiblich, Christian and Rucker, Wolfgang M.}, booktitle = {Digest Book of CEFC 2006}, doi = {10.1109/CEFC-06.2006.1632911}, month = {04}, pages = 118, title = {Fuzzy Logic Adaptive Mesh Refinement for 3D Nonlinear Magnetostatic Problems Using Integral Equation Method}, url = {https://ieeexplore.ieee.org/document/1632911/}, year = 2006 }
  Link
  https://ieeexplore.ieee.org/document/1632911/
  DOI
  10.1109/CEFC-06.2006.1632911
7. W. Hafla, A. Buchau, and W. M. Rucker, “Application of Fast Multipole Method to Biot-Savart Law Computations,” in Proceedings of the Sixth International Conference on Computational Electromagnetics, 2006, pp. 1–2.
  - BibTeX
  BibTeX
  @inproceedings{hafla2006application, author = {Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang M.}, booktitle = {Proceedings of the Sixth International Conference on Computational Electromagnetics}, pages = {1-2}, title = {Application of Fast Multipole Method to Biot-Savart Law Computations}, year = 2006 }
8. C. Scheiblich, K. Frenner, and W. M. Rucker, “Computation of Radiative Heat Transfer with the Boundary Element Method Applied to Inductive Heating,” in Proceedings of 12th International IGTE Symposium, Graz, 2006, pp. 462–466.
  - BibTeX
  BibTeX
  @inproceedings{scheiblich2006computation, address = {Graz}, author = {Scheiblich, Christian and Frenner, Karsten and Rucker, Wolfgang M.}, booktitle = {Proceedings of 12th International IGTE Symposium}, pages = {462-466}, title = {Computation of Radiative Heat Transfer with the Boundary Element Method Applied to Inductive Heating}, year = 2006 }
2005
1. B. André, H. Wolfgang, G. Friedemann, and R. W. M., “Parallelized computation of compressed BEM matrices on multiprocessor computer clusters,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 24, Art. no. 2, Jan. 2005, doi: 10.1108/03321640510586105.
  BibTeX
  @article{andre2005parallelized, abstract = {Purpose– Various parallelization strategies are investigated to mainly reduce the computational costs in the context of boundary element methods and a compressed system matrix.Design/methodology/approach– Electrostatic field problems are solved numerically by an indirect boundary element method. The fully dense system matrix is compressed by an application of the fast multipole method. Various parallelization techniques such as vectorization, multiple threads, and multiple processes are applied to reduce the computational costs.Findings– It is shown that in total a good speedup is achieved by a parallelization approach which is relatively easy to implement. Furthermore, a detailed discussion on the influence of problem oriented meshes to the different parts of the method is presented. On the one hand the application of problem oriented meshes leads to relatively small linear systems of equations along with a high accuracy of the solution, but on the other hand the efficiency of parallelization itself is diminished.Research limitations/implications– The presented parallelization approach has been tested on a small PC cluster only. Additionally, the main focus has been laid on a reduction of computing time.Practical implications– Typical properties of general static field problems are comprised in the investigated numerical example. Hence, the results and conclusions are rather general.Originality/value– Implementation details of a parallelization of existing fast and efficient boundary element method solvers are discussed. The presented approach is relatively easy to implement and takes special properties of fast methods in combination with parallelization into account.}, author = {André, Buchau and Wolfgang, Hafla and Friedemann, Groh and M., Rucker Wolfgang}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640510586105}, issn = {03321649}, month = {01}, number = 2, pages = {468--479}, publisher = {Emerald Group Publishing Limited}, title = {Parallelized computation of compressed BEM matrices on multiprocessor computer clusters}, url = {https://doi.org/10.1108/03321640510586105}, volume = 24, year = 2005 }
  Link
  https://doi.org/10.1108/03321640510586105
  DOI
  10.1108/03321640510586105
2. A. Buchau, W. Hafla, F. Groh, and W. M. Rucker, “Fast multipole method based solution of electrostatic and magnetostatic field problems,” Computing and Visualisation in Science, vol. 8, Art. no. 3–4, Dec. 2005, doi: 10.1007/s00791-005-0003-8.
  BibTeX
  @article{buchau2005multipole, abstract = {Applications of boundary element methods (BEM) to the solution of static field problems in electrical engineering are considered in this paper. The choice of a suitable BEM formulation for electrostatics, steady current flow fields or magnetostatics is discussed from user's point of view. The dense BEM matrix is compressed with an enhanced fast multipole method (FMM) which combines well-known BEM techniques with the FMM approach. An adaptive grouping scheme for problem oriented meshes is presented along with a discussion on the influence of the mesh to the efficiency of the FMM. The computational costs of the FMM algorithm are analyzed for typical problems in practice. Finally, some electrostatic and magnetostatic numerical examples demonstrate the simple usability and the efficiency of the FMM.}, author = {Buchau, André and Hafla, Wolfgang and Groh, Friedemann and Rucker, Wolfgang M.}, day = 01, doi = {10.1007/s00791-005-0003-8}, issn = {1433-0369}, journal = {Computing and Visualisation in Science}, month = {12}, number = {3-4}, pages = {137-144}, title = {Fast multipole method based solution of electrostatic and magnetostatic field problems}, url = {https://doi.org/10.1007/s00791-005-0003-8}, volume = 8, year = 2005 }
  Link
  https://doi.org/10.1007/s00791-005-0003-8
  DOI
  10.1007/s00791-005-0003-8
3. A. Buchau, W. Hafla, F. Groh, and W. M. Rucker, “Parallelized computation of compressed BEM matrices on multiprocessor computer clusters,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 24, Art. no. 2, Jan. 2005, doi: 10.1108/03321640510586105.
  BibTeX
  @article{andre2005parallelized, abstract = {Purpose– Various parallelization strategies are investigated to mainly reduce the computational costs in the context of boundary element methods and a compressed system matrix.Design/methodology/approach– Electrostatic field problems are solved numerically by an indirect boundary element method. The fully dense system matrix is compressed by an application of the fast multipole method. Various parallelization techniques such as vectorization, multiple threads, and multiple processes are applied to reduce the computational costs.Findings– It is shown that in total a good speedup is achieved by a parallelization approach which is relatively easy to implement. Furthermore, a detailed discussion on the influence of problem oriented meshes to the different parts of the method is presented. On the one hand the application of problem oriented meshes leads to relatively small linear systems of equations along with a high accuracy of the solution, but on the other hand the efficiency of parallelization itself is diminished.Research limitations/implications– The presented parallelization approach has been tested on a small PC cluster only. Additionally, the main focus has been laid on a reduction of computing time.Practical implications– Typical properties of general static field problems are comprised in the investigated numerical example. Hence, the results and conclusions are rather general.Originality/value– Implementation details of a parallelization of existing fast and efficient boundary element method solvers are discussed. The presented approach is relatively easy to implement and takes special properties of fast methods in combination with parallelization into account.}, author = {Buchau, André and Hafla, Wolfgang and Groh, Friedemann and Rucker, Wolfgang M.}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640510586105}, issn = {03321649}, month = {01}, number = 2, pages = {468--479}, publisher = {Emerald Group Publishing Limited}, title = {Parallelized computation of compressed BEM matrices on multiprocessor computer clusters}, url = {https://doi.org/10.1108/03321640510586105}, volume = 24, year = 2005 }
  Link
  https://doi.org/10.1108/03321640510586105
  DOI
  10.1108/03321640510586105
4. A. Buchau, W. Hafla, and W. M. Rucker, “Dual Reciprocity Method for the Solution of Electrostatic Field Problems with Inhomogeneous Dielectrics,” in COMPUMAG 2005 Proceedings, 2005.
  - BibTeX
  BibTeX
  @inproceedings{buchau2005reciprocity, author = {Buchau, André and Hafla, Wolfgang and Rucker, Wolfgang M.}, booktitle = {COMPUMAG 2005 Proceedings}, title = {Dual Reciprocity Method for the Solution of Electrostatic Field Problems with Inhomogeneous Dielectrics}, year = 2005 }
5. F. Groh, D. Beck, W. Hafla, A. Buchau, and W. M. Rucker, “Calculating Exciting Fields using the Fast Multipole Method and an Integral Transformation to the Coil Surface,” IEEE Transactions on Magnetics, vol. 41, Art. no. 5, May 2005, doi: 10.1109/TMAG.2005.844355.
  BibTeX
  @article{groh2005calculating, abstract = {A practicable method for computing exciting fields is presented. To avoid volume integration and meshing one uses a transformation of Biot-Savarts's law to the coil surface. In doing so, the exciting field strength is represented by a linear combination of single- and double-layer potentials. Both can be evaluated by the fast multipole method. The method is valid for a considerably class of coil geometries including race track and bedstead coils with arbitrary cross section.}, author = {Groh, Friedemann and Beck, David and Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang M.}, doi = {10.1109/TMAG.2005.844355}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {05}, number = 5, pages = {1384-1387}, title = {Calculating Exciting Fields using the Fast Multipole Method and an Integral Transformation to the Coil Surface}, url = {https://ieeexplore.ieee.org/document/1430865/}, volume = 41, year = 2005 }
  Link
  https://ieeexplore.ieee.org/document/1430865/
  DOI
  10.1109/TMAG.2005.844355
6. F. Groh, W. Hafla, and W. M. Rucker, “Non-linear Magnetostatic Integral Equations Iteratively Solved by Minimizing an Energy-Function,” in COMPUMAG 2005 Proceedings, 2005.
  - BibTeX
  BibTeX
  @inproceedings{groh2005nonlinear, author = {Groh, Friedemann and Hafla, Wolfgang and Rucker, Wolfgang M.}, booktitle = {COMPUMAG 2005 Proceedings}, title = {Non-linear Magnetostatic Integral Equations Iteratively Solved by Minimizing an Energy-Function}, year = 2005 }
7. W. Hafla, A. Buchau, F. Groh, and W. M. Rucker, “Efficient Integral Equation Method for the Solution of 3D Magnetostatic Problems,” IEEE Transactions on Magnetics, vol. 41, Art. no. 5, May 2005, doi: 10.1109/TMAG.2005.844342.
  BibTeX
  @article{hafla2005efficient, abstract = {Nonlinear three-dimensional (3-D) magnetostatic field problems are solved using integral equation methods (IEM). Only the nonlinear material itself has to be discretized. This results in a system of nonlinear equations with a relative small number of unknowns. To keep computational costs low the fully dense system matrix is compressed with the fast multipole method. The accuracy of the applied indirect IEM formulation is improved significantly by the use of a difference field concept and a special treatment of singularities at edges. An improved fixed point solver is used to ensure convergence of the nonlinear problem.}, author = {Hafla, Wolfgang and Buchau, André and Groh, Friedemann and Rucker, Wolfgang M.}, doi = {10.1109/TMAG.2005.844342}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {05}, number = 5, pages = {1408-1411}, title = {Efficient Integral Equation Method for the Solution of 3D Magnetostatic Problems}, url = {https://ieeexplore.ieee.org/document/1430871/}, volume = 41, year = 2005 }
  Link
  https://ieeexplore.ieee.org/document/1430871/
  DOI
  10.1109/TMAG.2005.844342
2004
1. B. André, H. Wolfgang, and R. W. M., “Fast and efficient 3D boundary element method for closed domains,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 23, Art. no. 4, Jan. 2004, doi: 10.1108/03321640410553283.
  BibTeX
  @article{andre2004efficient, abstract = {An application of a boundary element method to the solution of static field problems in closed domains is presented in this paper. The fully populated system matrix of the boundary element method is compressed with the fast multipole method. Two approaches of modified transformation techniques are compared and discussed in the context of boundary element methods to further reduce the computational costs of the fast multipole method. The efficiency of the fast multipole method with modified transformations is shown in two numerical examples.}, author = {André, Buchau and Wolfgang, Hafla and M., Rucker Wolfgang}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640410553283}, issn = {03321649}, month = {01}, number = 4, pages = {859--865}, publisher = {Emerald Group Publishing Limited}, title = {Fast and efficient 3D boundary element method for closed domains}, url = {https://doi.org/10.1108/03321640410553283}, volume = 23, year = 2004 }
  Link
  https://doi.org/10.1108/03321640410553283
  DOI
  10.1108/03321640410553283
2. A. Buchau, W. Hafla, F. Groh, and W. M. Rucker, “Fast Multipole Boundary Element Method For The Solution Of 3D Electrostatic Field Problems,” WIT Transactions on Modelling and Simulation, vol. 37, pp. 369–379, 2004, doi: 10.2495/BE040361.
  - BibTeX
  - DOI
  BibTeX
  @article{buchau2004multipole, author = {Buchau, A. and Hafla, W. and Groh, F. and Rucker, W. M.}, doi = {10.2495/BE040361}, journal = {WIT Transactions on Modelling and Simulation}, pages = {369-379}, title = {Fast Multipole Boundary Element Method For The Solution Of 3D Electrostatic Field Problems}, volume = 37, year = 2004 }
  DOI
  10.2495/BE040361
3. A. Buchau, W. Hafla, F. Groh, and W. M. Rucker, “Parallelized Computation of Compressed BEM Matrices on Multiprocessor Computer Clusters,” in Proceedings of the 11th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, Graz, 2004.
  - BibTeX
  BibTeX
  @inproceedings{buchau2004parallelized, address = {Graz}, author = {Buchau, André and Hafla, Wolfgang and Groh, Friedemann and Rucker, Wolfgang M.}, booktitle = {Proceedings of the 11th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering}, title = {Parallelized Computation of Compressed BEM Matrices on Multiprocessor Computer Clusters}, year = 2004 }
4. A. Buchau, W. Hafla, and W. M. Rucker, “Fast and efficient 3D boundary element method for closed domains,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 23, Art. no. 4, Jan. 2004, doi: 10.1108/03321640410553283.
  BibTeX
  @article{andre2004efficient, abstract = {An application of a boundary element method to the solution of static field problems in closed domains is presented in this paper. The fully populated system matrix of the boundary element method is compressed with the fast multipole method. Two approaches of modified transformation techniques are compared and discussed in the context of boundary element methods to further reduce the computational costs of the fast multipole method. The efficiency of the fast multipole method with modified transformations is shown in two numerical examples.}, author = {Buchau, André and Hafla, Wolfgang and Rucker, Wolfgang M.}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640410553283}, issn = {03321649}, month = {01}, number = 4, pages = {859--865}, publisher = {Emerald Group Publishing Limited}, title = {Fast and efficient 3D boundary element method for closed domains}, url = {https://doi.org/10.1108/03321640410553283}, volume = 23, year = 2004 }
  Link
  https://doi.org/10.1108/03321640410553283
  DOI
  10.1108/03321640410553283
5. G. Friedemann, H. Wolfgang, B. André, and R. W. M., “Field strength computation at edges in nonlinear magnetostatics,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 23, Art. no. 3, Jan. 2004, doi: 10.1108/03321640410540575.
  BibTeX
  @article{friedemann2004field, abstract = {Magnetostatic problems including iron components can be solved by a nonlinear indirect volume integral equation. Its unknowns are scalar field sources. They are evaluated iteratively. In doing so the integral representation of fields has to be calculated. At edges singularities occur. Following a method to calculate the field strength on charged surfaces a way out is presented.}, author = {Friedemann, Groh and Wolfgang, Hafla and André, Buchau and M., Rucker Wolfgang}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640410540575}, issn = {03321649}, month = {01}, number = 3, pages = {662--669}, publisher = {Emerald Group Publishing Limited}, title = {Field strength computation at edges in nonlinear magnetostatics}, url = {https://doi.org/10.1108/03321640410540575}, volume = 23, year = 2004 }
  Link
  https://doi.org/10.1108/03321640410540575
  DOI
  10.1108/03321640410540575
6. F. Groh, W. Hafla, A. Buchau, and W. Rucker, “Field strength computation at edges in nonlinear magnetostatics,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 23, Art. no. 3, Jan. 2004, doi: 10.1108/03321640410540575.
  BibTeX
  @article{friedemann2004field, abstract = {Magnetostatic problems including iron components can be solved by a nonlinear indirect volume integral equation. Its unknowns are scalar field sources. They are evaluated iteratively. In doing so the integral representation of fields has to be calculated. At edges singularities occur. Following a method to calculate the field strength on charged surfaces a way out is presented.}, author = {Groh, Friedemann and Hafla, Wolfgang and Buchau, André and Rucker, Wolfgang}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640410540575}, issn = {03321649}, month = {01}, number = 3, pages = {662--669}, publisher = {Emerald Group Publishing Limited}, title = {Field strength computation at edges in nonlinear magnetostatics}, url = {https://doi.org/10.1108/03321640410540575}, volume = 23, year = 2004 }
  Link
  https://doi.org/10.1108/03321640410540575
  DOI
  10.1108/03321640410540575
7. W. Hafla, F. Groh, A. Buchau, and W. M. Rucker, “Efficient IEM Computations of Static Nonlinear Magnetic Field Problems with Higher Order Elements,” in Proceedings of the 11th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, Graz, 2004.
  - BibTeX
  BibTeX
  @inproceedings{hafla2004efficient, address = {Graz}, author = {Hafla, Wolfgang and Groh, Friedemann and Buchau, André and Rucker, Wolfgang M.}, booktitle = {Proceedings of the 11th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering}, title = {Efficient IEM Computations of Static Nonlinear Magnetic Field Problems with Higher Order Elements}, year = 2004 }
2003
1. B. André, H. Wolfgang, G. Friedemann, and R. W. M., “Improved grouping scheme and meshing strategies for the fast multipole method,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 22, Art. no. 3, Jan. 2003, doi: 10.1108/03321640310474895.
  BibTeX
  @article{andre2003improved, abstract = {If the fast multipole method (FMM) is applied in the context of the boundary element method, the efficiency and accuracy of the FMM is significantly influenced by the used hierarchical grouping scheme. Hence, in this paper, a new approach to the grouping scheme is presented to solve numerical examples with problem‐oriented meshes and higher order elements accurately and efficiently. Furthermore, with the proposed meshing strategies the efficiency of the FMM can be additionally controlled.}, author = {André, Buchau and Wolfgang, Hafla and Friedemann, Groh and M., Rucker Wolfgang}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640310474895}, issn = {03321649}, month = {01}, number = 3, pages = {495--507}, publisher = {MCB UP Ltd}, title = {Improved grouping scheme and meshing strategies for the fast multipole method}, url = {https://doi.org/10.1108/03321640310474895}, volume = 22, year = 2003 }
  Link
  https://doi.org/10.1108/03321640310474895
  DOI
  10.1108/03321640310474895
2. A. Buchau, W. M. Rucker, O. Rain, V. Rischmuller, S. Kurz, and S. Rjasanow, “Comparison between different approaches for fast and efficient 3-D BEM computations,” IEEE Transactions on Magnetics, vol. 39, Art. no. 3, May 2003, doi: 10.1109/TMAG.2003.810167.
  BibTeX
  @article{buchau2003comparison, abstract = {Fast methods like the fast multipole method or the adaptive cross approximation technique reduce the memory requirements and the computational costs of the boundary-element method (BEM) to approximately O(N). In this paper, both fast methods are applied in combination with BEM-finite-element method coupling to nonlinear magnetostatic problems.}, author = {{Buchau}, A. and {Rucker}, W. M. and {Rain}, O. and {Rischmuller}, V. and {Kurz}, S. and {Rjasanow}, S.}, doi = {10.1109/TMAG.2003.810167}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {05}, number = 3, pages = {1107-1110}, title = {Comparison between different approaches for fast and efficient 3-D BEM computations}, url = {https://ieeexplore.ieee.org/document/1198410/}, volume = 39, year = 2003 }
  Link
  https://ieeexplore.ieee.org/document/1198410/
  DOI
  10.1109/TMAG.2003.810167
3. A. Buchau, W. Hafla, F. Groh, and W. M. Rucker, “Compression Techniques for Integral Equation Methods,” in Tagungsband des 48. Internationalen Wissenschaftlichen Kolloquiums, Ilmenau, 2003, pp. 337–338.
  - BibTeX
  BibTeX
  @inproceedings{buchau2003compression, address = {Ilmenau}, author = {Buchau, André and Hafla, Wolfgang and Groh, Friedemann and Rucker, Wolfgang M.}, booktitle = {Tagungsband des 48. Internationalen Wissenschaftlichen Kolloquiums}, pages = {337-338}, title = {Compression Techniques for Integral Equation Methods}, year = 2003 }
4. A. Buchau, W. Hafla, F. Groh, and W. M. Rucker, “Improved grouping scheme and meshing strategies for the fast multipole method,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 22, Art. no. 3, Jan. 2003, doi: 10.1108/03321640310474895.
  BibTeX
  @article{andre2003improved, abstract = {If the fast multipole method (FMM) is applied in the context of the boundary element method, the efficiency and accuracy of the FMM is significantly influenced by the used hierarchical grouping scheme. Hence, in this paper, a new approach to the grouping scheme is presented to solve numerical examples with problem‐oriented meshes and higher order elements accurately and efficiently. Furthermore, with the proposed meshing strategies the efficiency of the FMM can be additionally controlled.}, author = {Buchau, André and Hafla, Wolfgang and Groh, Friedemann and Rucker, Wolfgang M.}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640310474895}, issn = {03321649}, month = {01}, number = 3, pages = {495--507}, publisher = {MCB UP Ltd}, title = {Improved grouping scheme and meshing strategies for the fast multipole method}, url = {https://doi.org/10.1108/03321640310474895}, volume = 22, year = 2003 }
  Link
  https://doi.org/10.1108/03321640310474895
  DOI
  10.1108/03321640310474895
5. A. Buchau and W. M. Rucker, “Capacitance Computation of Thin Conductors with the Fast Multipole Method,” International Journal of Applied Electromagnetics and Mechanics, vol. 17, Art. no. 1–3, Jun. 2003, doi: 10.3233/JAE-2003-244.
  BibTeX
  @article{buchau2003capacitance, author = {Buchau, André and Rucker, Wolfgang M.}, doi = {10.3233/JAE-2003-244}, issn = {1875-8800}, journal = {International Journal of Applied Electromagnetics and Mechanics}, month = {06}, number = {1-3}, pages = {75-89}, publisher = {IOS Press}, title = {Capacitance Computation of Thin Conductors with the Fast Multipole Method}, url = {http://doi.org/10.3233/JAE-2003-244}, volume = 17, year = 2003 }
  Link
  http://doi.org/10.3233/JAE-2003-244
  DOI
  10.3233/JAE-2003-244
2002
1. A. Buchau and W. M. Rucker, “Efficient Computation of Double-Layer Potentials Using the Fast Multipole Method,” in Conference Digest of IEEE CEFC, Perugia, 2002, p. 316.
  - BibTeX
  BibTeX
  @inproceedings{buchau2002efficient, address = {Perugia}, author = {Buchau, André and Rucker, Wolfgang M.}, booktitle = {Conference Digest of IEEE CEFC}, pages = 316, title = {Efficient Computation of Double-Layer Potentials Using the Fast Multipole Method}, year = 2002 }
2. A. Buchau and W. M. Rucker, “Efficient Boundary Element Solutions of Electrostatic Fields Using the Fast Multipole Method,” Technical article in International Compumag Society Newsletter, vol. 9, Art. no. 1, 2002.
  - BibTeX
  BibTeX
  @article{buchau2002efficient, author = {Buchau, André and Rucker, Wolfgang M.}, journal = {Technical article in International Compumag Society Newsletter}, number = 1, pages = {5-9}, title = {Efficient Boundary Element Solutions of Electrostatic Fields Using the Fast Multipole Method}, volume = 9, year = 2002 }
3. A. Buchau and W. M. Rucker, “Preconditioned Fast Adaptive Multipole Boundary Element Method,” IEEE Transactions on Magnetics, vol. 38, Art. no. 2, Mar. 2002, doi: 10.1109/20.996122.
  BibTeX
  @article{buchau2002preconditioned, abstract = {The application of the fast multipole method reduces the computational costs and the memory requirements in boundary-element method (BEM) computations from O(N/sup 2/) to approximately O(N). The computation of the near-field interactions can be done very efficiently, when all conventional BEM integrations are stored in one sparse matrix. Furthermore, we will show, how the system of linear equations can be preconditioned, when the fast multipole method is used, and how the preconditioner reduces the computational costs significantly.}, author = {Buchau, André and Rucker, Wolfgang M.}, doi = {10.1109/20.996122}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {03}, number = 2, pages = {461-464}, title = {Preconditioned Fast Adaptive Multipole Boundary Element Method}, url = {https://ieeexplore.ieee.org/document/996122/}, volume = 38, year = 2002 }
  Link
  https://ieeexplore.ieee.org/document/996122/
  DOI
  10.1109/20.996122
4. O. Henze and W. M. Rucker, “A new Vector Hysteresis Model,” in Proceedings of the 10th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, Graz, 2002, pp. 500–504.
  - BibTeX
  BibTeX
  @inproceedings{henze2002vector, address = {Graz}, author = {Henze, Olaf and Rucker, Wolfgang M.}, booktitle = {Proceedings of the 10th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering}, pages = {500-504}, title = {A new Vector Hysteresis Model}, year = 2002 }
2001
1. A. Buchau, W. Rieger, and W. M. Rucker, “BEM Computations Using the Fast Multipole Method in Combination with Higher Order Elements and the Galerkin Method,” IEEE Transactions on Magnetics, vol. 37, Art. no. 5, Sep. 2001, doi: 10.1109/20.952572.
  BibTeX
  @article{buchau2001computations, abstract = {A new approach to the adaptive multilevel fast multipole method in combination with higher order elements and the Galerkin method is presented. As the computational costs and the memory requirements are approximately proportional to the number of unknowns, very large static problems with complex geometrical configuration can be solved on a small computer.}, author = {Buchau, André and Rieger, Wolfgang and Rucker, Wolfgang M.}, doi = {10.1109/20.952572}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {09}, number = 5, pages = {3181-3185}, title = {BEM Computations Using the Fast Multipole Method in Combination with Higher Order Elements and the Galerkin Method}, url = {https://ieeexplore.ieee.org/document/952572/}, volume = 37, year = 2001 }
  Link
  https://ieeexplore.ieee.org/document/952572/
  DOI
  10.1109/20.952572
2. A. Buchau, W. Rieger, and W. M. Rucker, “Fast field computations with the fast multipole method,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 20, Art. no. 2, Jan. 2001, doi: 10.1108/03321640110383861.
  BibTeX
  @article{buchau2001field, abstract = {The application of the fast multipole method reduces the computational costs and the memory requirements of the boundary element method from O(N2) to approximately O(N). In this paper we present that the computational costs can be strongly shortened, when the multipole method is not only used for the solution of the system of linear equations but also for the field computation in arbitrary points.}, author = {Buchau, André and Rieger, Wolfgang and Rucker, Wolfgang M.}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321640110383861}, issn = {03321649}, month = {01}, number = 2, pages = {547--561}, publisher = {MCB UP Ltd}, title = {Fast field computations with the fast multipole method}, url = {https://doi.org/10.1108/03321640110383861}, volume = 20, year = 2001 }
  Link
  https://doi.org/10.1108/03321640110383861
  DOI
  10.1108/03321640110383861
3. W. Rieger, A. Buchau, G. Lehner, and W. M. Rucker, “Three-Dimensional Direct and Inverse Electromagnetic Scattering,” High Performance Computing in Science and Engineering, 2001.
  - BibTeX
  BibTeX
  @article{rieger2001threedimensional, author = {Rieger, W. and Buchau, A. and Lehner, G. and Rucker, W.M.}, journal = {High Performance Computing in Science and Engineering}, title = {Three-Dimensional Direct and Inverse Electromagnetic Scattering}, year = 2001 }
4. V. Rischmüller, S. Kurz, and W. M. Rucker, “Parallel Field Computation Based on Coupling of Differential and Integral Methods,” COMPEL, vol. 20, Art. no. 2, 2001.
  - BibTeX
  BibTeX
  @article{rischmuller2001parallel, author = {Rischmüller, Volker and Kurz, Stefan and Rucker, Wolfgang M.}, journal = {COMPEL}, number = 2, pages = {607-618}, title = {Parallel Field Computation Based on Coupling of Differential and Integral Methods}, volume = 20, year = 2001 }
2000
1. A. Buchau, C. J. Huber, W. Rieger, and W. M. Rucker, “Fast BEM Computations with the Adaptive Multilevel Fast Multipole Method,” IEEE Transactions on Magnetics, vol. 36, Art. no. 4, Jul. 2000, doi: 10.1109/20.877540.
  BibTeX
  @article{buchau2000computations, abstract = {Since the storage requirements of the BEM are proportional to N/sup 2/, only relative small problems can be solved on a PC or a workstation. In this paper we present an adaptive multilevel fast multipole method for the solution of electrostatic problems with the BEM. We will show, that in practice the storage requirements and the computational costs are approximately proportional to N and therefore even large three dimensional problems can be solved on a relative small computer.}, author = {Buchau, André and Huber, Christian J. and Rieger, Wolfgang and Rucker, Wolfgang M.}, doi = {10.1109/20.877540}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {07}, number = 4, pages = {680-684}, title = {Fast BEM Computations with the Adaptive Multilevel Fast Multipole Method}, url = {https://ieeexplore.ieee.org/document/877540/}, volume = 36, year = 2000 }
  Link
  https://ieeexplore.ieee.org/document/877540/
  DOI
  10.1109/20.877540
2. C. J. Huber, A. Buchau, W. Rieger, and W. M. Rucker, “Boundary Element Computation of Partially Coated Bodies Using Higher Order Edge Elements,” IEEE Transactions on Magnetics, vol. 36, Art. no. 4, Jul. 2000, doi: 10.1109/20.877576.
  BibTeX
  @article{huber2000boundary, abstract = {A boundary element method in terms of the field variables is applied to eddy current problems with piecewise constant material properties. In particular, the junction problem in the three-dimensional case is considered. We propose higher order edge elements of quadrilateral shape for the field approximation on the surfaces. The Galerkin method is applied to obtain a set of linear equations. The applicability of the proposed edge elements is investigated by the comparison of numerical results with measured data.}, author = {Huber, Christian J. and Buchau, André and Rieger, Wolfgang and Rucker, Wolfgang M.}, doi = {10.1109/20.877576}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {07}, number = 4, pages = {844-847}, title = {Boundary Element Computation of Partially Coated Bodies Using Higher Order Edge Elements}, url = {https://ieeexplore.ieee.org/document/877576/}, volume = 36, year = 2000 }
  Link
  https://ieeexplore.ieee.org/document/877576/
  DOI
  10.1109/20.877576
3. W. Rieger, A. Buchau, C. J. Huber, G. Lehner, and W. M. Rucker, “A New Approach to the 2D Inverse Electromagnetic Medium Scattering Problem: Reconstruction of Anisotropic Objects,” IEEE Transactions on Magnetics, vol. 36, Art. no. 4, Jul. 2000, doi: 10.1109/20.877634.
  BibTeX
  @article{rieger2000approach, abstract = {A new method for reconstructing the material properties of inhomogeneous lossy dielectric biaxial cylindrical objects is presented. The material properties are reconstructed using scattering data from time-harmonic electromagnetic plane waves with the electric field vector perpendicular to the cylindrical object (TE-polarization). The inverse scattering problem formulated as a nonlinear optimization problem is numerically solved using a variable metric method. This method involves exact first-order gradients, Numerical examples illustrate the efficiency of the algorithm.}, author = {Rieger, Wolfgang and Buchau, André and Huber, Christian J. and Lehner, Günther and Rucker, Wolfgang M.}, doi = {10.1109/20.877634}, issn = {1941-0069}, journal = {IEEE Transactions on Magnetics}, month = {07}, number = 4, pages = {1106-1109}, title = {A New Approach to the 2D Inverse Electromagnetic Medium Scattering Problem: Reconstruction of Anisotropic Objects}, url = {https://ieeexplore.ieee.org/document/877634/}, volume = 36, year = 2000 }
  Link
  https://ieeexplore.ieee.org/document/877634/
  DOI
  10.1109/20.877634
4. V. Rischmüller, S. Kurz, and W. M. Rucker, “Parallel Field Computation Based on Coupling of Differential and Integral Methods,” in Proceedings of the 9th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, Graz, 2000.
  - BibTeX
  BibTeX
  @inproceedings{rischmuller2000parallel, address = {Graz}, author = {Rischmüller, Volker and Kurz, Stefan and Rucker, Wolfgang M.}, booktitle = {Proceedings of the 9th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering}, title = {Parallel Field Computation Based on Coupling of Differential and Integral Methods}, year = 2000 }
1999
1. M. Haas, W. Rieger, C. J. Huber, G. Lehner, and W. M. Rucker, “Improvement of inverse scattering results by combining TM- and TE-polarized probing waves using an iterative adaption technique,” IEEE Transactions on Magnetics, vol. 35, Art. no. 3, 1999.
  - BibTeX
  BibTeX
  @article{haas1999improvement, author = {Haas, Martin and Rieger, Wolfgang and Huber, Christian J. and Lehner, Günther and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, number = 3, pages = {1574-1577}, title = {Improvement of inverse scattering results by combining TM- and TE-polarized probing waves using an iterative adaption technique}, volume = 35, year = 1999 }
2. C. J. Huber, W. Rieger, A. Buchau, and W. M. Rucker, “BEM‐computation of antenna near field reactionson conducting materials using curvilinear edge elements,” COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 18, Art. no. 3, Jan. 1999, doi: 10.1108/03321649910274919.
  BibTeX
  @article{huber1999bemcomputation, abstract = {A boundary element method in terms of the field variables is applied to three‐dimensional electromagnetic scattering problems. Especially, the influence of a dipole excited field on low conducting materials situated very close to the antenna will be discussed. We use higher order edge elements of quadilateral shape for the field approximation on curved surfaces. The tangential components of the unknown field variables are interpolated by vector element functions. The Galerkin method is implemented to obtain a set of linear equations. The applicability of the proposed edge element is investigated by the comparison of different BEM‐formulations and FEM‐results.}, author = {Huber, C.J and Rieger, W. and Buchau, A. and Rucker, W.M}, booktitle = {COMPEL - The international journal for computation and mathematics in electrical and electronic engineering}, doi = {10.1108/03321649910274919}, issn = {03321649}, month = {01}, number = 3, pages = {348--360}, publisher = {MCB UP Ltd}, title = {BEM‐computation of antenna near field reactionson conducting materials using curvilinear edge elements}, url = {https://doi.org/10.1108/03321649910274919}, volume = 18, year = 1999 }
  Link
  https://doi.org/10.1108/03321649910274919
  DOI
  10.1108/03321649910274919
3. U. Jakobus, A. Buchau, and F. M. Landstorfer, “Extending a MoM/PO/UTD Hybrid Method by an Automatic Selection of the Computational Methods Based on Neural Networks,” Proceedings of the 15th Annual Review of Progress in Applied Computational Electromagnetics, vol. 1, pp. 455–462, 1999.
  - BibTeX
  BibTeX
  @article{jakobus1999extending, author = {Jakobus, U. and Buchau, André and Landstorfer, F. M.}, journal = {Proceedings of the 15th Annual Review of Progress in Applied Computational Electromagnetics}, pages = {455-462}, title = {Extending a MoM/PO/UTD Hybrid Method by an Automatic Selection of the Computational Methods Based on Neural Networks}, volume = 1, year = 1999 }
4. W. Rieger, A. Buchau, M. Haas, C. Huber, G. Lehner, and W. M. Rucker, “2D-TE inverse medium scattering: an improved variable metric method,” in IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010), Jul. 1999, p. 2140–2143 vol.3. doi: 10.1109/APS.1999.788385.
  BibTeX
  @inproceedings{rieger1999inverse, abstract = {The 2D inverse electromagnetic scattering problem of reconstructing the material properties of inhomogeneous lossy dielectric cylindrical objects is considered. The material properties are reconstructed using scattering data from time-harmonic electromagnetic plane waves with the electric field vector perpendicular to the cylinder axis (TE-polarization). An improved algorithm based on a variable metric method is presented to solve the inverse scattering problem. The new method ensures positive values of the reconstructed quantities. This method involves exact first-order gradients. Numerical examples illustrate the efficiency of the algorithm.}, author = {{Rieger}, W. and {Buchau}, A. and {Haas}, M. and {Huber}, C. and {Lehner}, G. and {Rucker}, W. M.}, booktitle = {IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)}, doi = {10.1109/APS.1999.788385}, month = {07}, pages = {2140-2143 vol.3}, title = {2D-TE inverse medium scattering: an improved variable metric method}, url = {https://ieeexplore.ieee.org/document/788385/}, volume = 3, year = 1999 }
  Link
  https://ieeexplore.ieee.org/document/788385/
  DOI
  10.1109/APS.1999.788385
5. W. Rieger, A. Buchau, M. Hass, C. Huber, G. Lelmer, and W. M. Rucker, “2D-TE inverse medium scattering: an improved variable metric method,” in IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010), Jul. 1999, p. 2140–2143 vol.3. doi: 10.1109/APS.1999.788385.
  BibTeX
  @inproceedings{rieger1999inverse, abstract = {The 2D inverse electromagnetic scattering problem of reconstructing the material properties of inhomogeneous lossy dielectric cylindrical objects is considered. The material properties are reconstructed using scattering data from time-harmonic electromagnetic plane waves with the electric field vector perpendicular to the cylinder axis (TE-polarization). An improved algorithm based on a variable metric method is presented to solve the inverse scattering problem. The new method ensures positive values of the reconstructed quantities. This method involves exact first-order gradients. Numerical examples illustrate the efficiency of the algorithm.}, author = {{Rieger}, W. and {Buchau}, A. and {Hass}, M. and {Huber}, C. and {Lelmer}, G. and {Rucker}, W. M.}, booktitle = {IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)}, doi = {10.1109/APS.1999.788385}, month = {07}, pages = {2140-2143 vol.3}, title = {2D-TE inverse medium scattering: an improved variable metric method}, url = {https://ieeexplore.ieee.org/document/788385/}, volume = 3, year = 1999 }
  Link
  https://ieeexplore.ieee.org/document/788385/
  DOI
  10.1109/APS.1999.788385
6. W. Rieger, M. Haas, C. J. Huber, G. Lehner, and W. M. Rucker, “Image Reconstruction from Real Scattering Data Using an Iterative Scheme with Incorporated a priori Information,” IEEE Antennas and Propagation Magazine, vol. 41, Art. no. 2, Apr. 1999, doi: 10.1109/74.769690.
  BibTeX
  @article{rieger1999image, abstract = {The two-dimensional inverse electromagnetic-scattering problem of reconstructing the material properties of inhomogeneous lossy dielectric cylindrical objects is considered. The material properties are reconstructed from measured far-field scattering data, provided by the USAF Rome Laboratory Electromagnetic Measurement Facility in Ipswich. The targets in the Ipswich data set include perfectly electrically conducting (PEC) targets, penetrable (PEN) targets, and hybrid targets. A new method, which incorporates a priori information about the material properties, is proposed to solve the nonlinear inverse-scattering problem.}, author = {Rieger, Wolfgang and Haas, Martin and Huber, Christian J. and Lehner, Günther and Rucker, Wolfgang M.}, doi = {10.1109/74.769690}, issn = {1558-4143}, journal = {IEEE Antennas and Propagation Magazine}, month = {04}, number = 2, pages = {33-36}, title = {Image Reconstruction from Real Scattering Data Using an Iterative Scheme with Incorporated a priori Information}, url = {https://ieeexplore.ieee.org/document/769690/}, volume = 41, year = 1999 }
  Link
  https://ieeexplore.ieee.org/document/769690/
  DOI
  10.1109/74.769690
7. V. Rischmüller, J. Fetzer, S. Kurz, and W. M. Rucker, “Analysis of TEAM Workshop Problem 13 Using Parallel BEM Coupled to FEM,” in Proceedings of the International TEAM Workshop, Sapporo, 1999.
  - BibTeX
  BibTeX
  @inproceedings{rischmuller1999analysis, address = {Sapporo}, author = {Rischmüller, Volker and Fetzer, Joachim and Kurz, Stefan and Rucker, Wolfgang M.}, booktitle = {Proceedings of the International TEAM Workshop}, title = {Analysis of TEAM Workshop Problem 13 Using Parallel BEM Coupled to FEM}, year = 1999 }
8. V. Rischmüller, J. Fetzer, S. Kurz, and W. M. Rucker, “The Solution of TEAM Problem 21 Using Domain Decomposition and Parallelization,” in Proceedings of the International TEAM Workshop, Sapporo, 1999.
  - BibTeX
  BibTeX
  @inproceedings{rischmuller1999solution, address = {Sapporo}, author = {Rischmüller, Volker and Fetzer, Joachim and Kurz, Stefan and Rucker, Wolfgang M.}, booktitle = {Proceedings of the International TEAM Workshop}, title = {The Solution of TEAM Problem 21 Using Domain Decomposition and Parallelization}, year = 1999 }
1998
1. C. J. Huber, W. Rieger, M. Haas, and W. M. Rucker, “A Boundary Element Formulation Using Higher Order Curvilinear Edge Elements,” IEEE Transactions on Magnetics, vol. 34, pp. 2441–2444, 1998.
  - BibTeX
  BibTeX
  @article{huber1998boundary, author = {Huber, Christian J. and Rieger, Wolfgang and Haas, Martin and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, pages = {2441-2444}, title = {A Boundary Element Formulation Using Higher Order Curvilinear Edge Elements}, volume = 34, year = 1998 }
2. S. Kurz, J. Fetzer, G. Lehner, and W. M. Rucker, “Calculation of the eddy current distribution in a Fast-Ferrite-Tuner caused by a dynamic tuning field using BEM-FEM coupling,” in Record of the 8th Biennal IEEE Conference on Electromagnetic Field Computation, Tucson, 1998.
  - BibTeX
  BibTeX
  @inproceedings{kurz1998calculation, address = {Tucson}, author = {Kurz, Stefan and Fetzer, Joachim and Lehner, Günther and Rucker, Wolfgang M.}, booktitle = {Record of the 8th Biennal IEEE Conference on Electromagnetic Field Computation}, title = {Calculation of the eddy current distribution in a Fast-Ferrite-Tuner caused by a dynamic tuning field using BEM-FEM coupling}, year = 1998 }
3. S. Kurz, J. Fetzer, G. Lehner, and W. M. Rucker, “A novel formulation for 3D eddy current problems with moving bodies using a Lagrangian description and BEM-FEM coupling,” IEEE Transactions on Magnetics, vol. 34, pp. 3068–3073, 1998.
  - BibTeX
  BibTeX
  @article{kurz1998novel, author = {Kurz, Stefan and Fetzer, Joachim and Lehner, Günther and Rucker, Wolfgang M.}, journal = {IEEE Transactions on Magnetics}, pages = {3068-3073}, title = {A novel formulation for 3D eddy current problems with moving bodies using a Lagrangian description and BEM-FEM coupling}, volume = 34, year = 1998 }
4. S. Kurz, J. Fetzer, and W. M. Rucker, “Coupled BEM-FEM methods for 3D field calculations with iron saturation,” in Proc. of the 1st International Roxie Users Meeting and Workshop, Geneva, 1998, pp. 47–59.
  - BibTeX
  BibTeX
  @inproceedings{kurz1998coupled, address = {Geneva}, author = {Kurz, Stefan and Fetzer, Joachim and Rucker, Wolfgang M.}, booktitle = {Proc. of the 1st International Roxie Users Meeting and Workshop}, pages = {47-59}, title = {Coupled BEM-FEM methods for 3D field calculations with iron saturation}, year = 1998 }
5. W. Rieger, A. Buchau, M. Haas, C. J. Huber, G. Lehner, and W. M. Rucker, “Image Reconstruction from Real Scattering Data,” in Proceedings of 8th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, Graz, 1998, pp. 263–268.
  - BibTeX
  BibTeX
  @inproceedings{rieger1998image, address = {Graz}, author = {Rieger, Wolfgang and Buchau, André and Haas, Martin and Huber, Christian J. and Lehner, Günther and Rucker, Wolfgang M.}, booktitle = {Proceedings of 8th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering}, pages = {263-268}, title = {Image Reconstruction from Real Scattering Data}, year = 1998 }
6. W. Rieger, M. Haas, C. J. Huber, G. Lehner, and W. M. Rucker, “A New Approach to the 2D-TE Inverse Electromagnetic Medium Scattering,” in IEEE AP-S International Symposium Digest, vol. 2, 1998, pp. 706–709.
  - BibTeX
  BibTeX
  @inproceedings{rieger1998approach, author = {Rieger, Wolfgang and Haas, Martin and Huber, Christian J. and Lehner, Günther and Rucker, Wolfgang M.}, booktitle = {IEEE AP-S International Symposium Digest, vol. 2}, pages = {706-709}, title = {A New Approach to the 2D-TE Inverse Electromagnetic Medium Scattering}, year = 1998 }
1997
1. J. Fetzer, S. Kurz, G. Lehner, and W. M. Rucker, “Some aspects of force computation using BEM-FEM coupling,” ACES Journal, vol. 12, Art. no. 2, 1997.
  - BibTeX
  BibTeX
  @article{fetzer1997aspects, author = {Fetzer, Joachim and Kurz, Stefan and Lehner, Günther and Rucker, Wolfgang M.}, journal = {ACES Journal}, number = 2, pages = {117-120}, title = {Some aspects of force computation using BEM-FEM coupling}, volume = 12, year = 1997 }
2. J. Fetzer, S. Kurz, G. Lehner, and W. M. Rucker, “The solution of TEAM workshop problem 24 using BEM-FEM coupling,” in Proceedings of the TEAM Workshop in the Sixth Round, Rio de Janeiro, 1997, pp. 33–35.
  - BibTeX
  BibTeX
  @inproceedings{fetzer1997solution, address = {Rio de Janeiro}, author = {Fetzer, Joachim and Kurz, Stefan and Lehner, Günther and Rucker, Wolfgang M.}, booktitle = {Proceedings of the TEAM Workshop in the Sixth Round}, pages = {33-35}, title = {The solution of TEAM workshop problem 24 using BEM-FEM coupling}, year = 1997 }
3. M. Haas, W. Rieger, W. M. Rucker, and G. Lehner, “Inverse 3D Acoustic and Electromagnetic Obstacle Scattering by Iterative Adaption,” Lecture Notes in Physics, Springer, 1997.
  - BibTeX
  BibTeX
  @article{haas1997inverse, author = {Haas, Martin and Rieger, Wolfgang and Rucker, Wolfgang M. and Lehner, Günther}, journal = {Lecture Notes in Physics, Springer}, title = {Inverse 3D Acoustic and Electromagnetic Obstacle Scattering by Iterative Adaption}, year = 1997 }
4. C. J. Huber, W. Rieger, M. Haas, and W. M. Rucker, “The Numerical Treatment of Singular Integrals in Boundary Element Calculations,” ACES Journal, vol. 12, Art. no. 2, 1997.
  - BibTeX
  BibTeX
  @article{huber1997numerical, author = {Huber, Christian J. and Rieger, Wolfgang and Haas, Martin and Rucker, Wolfgang M.}, journal = {ACES Journal}, number = 2, pages = {121-126}, title = {The Numerical Treatment of Singular Integrals in Boundary Element Calculations}, volume = 12, year = 1997 }
5. C. J. Huber, W. M. Rucker, R. Hoschek, and K. R. Richter, “A New Method for the Numerical Calculation of Cauchy Principal Value Integrals in BEM applied to Electromagnetics,” IEEE Transactions on Magnetics, vol. 33, pp. 119–123, 1997.
  - BibTeX
  BibTeX
  @article{huber1997method, author = {Huber, Christian J. and Rucker, Wolfgang M. and Hoschek, R. and Richter, K. R.}, journal = {IEEE Transactions on Magnetics}, pages = {119-123}, title = {A New Method for the Numerical Calculation of Cauchy Principal Value Integrals in BEM applied to Electromagnetics}, volume = 33, year = 1997 }
6. H. Karl, J. Fetzer, S. Kurz, G. Lehner, and W. M. Rucker, “Description of TEAM workshop problem 28: An electromagnetic levitation device,” in Proceedings of the TEAM Workshop in the Sixth Round, Rio de Janeiro, 1997, pp. 48–51.
  - BibTeX
  BibTeX
  @inproceedings{karl1997description, address = {Rio de Janeiro}, author = {Karl, Hans and Fetzer, Joachim and Kurz, Stefan and Lehner, Günther and Rucker, Wolfgang M.}, booktitle = {Proceedings of the TEAM Workshop in the Sixth Round}, pages = {48-51}, title = {Description of TEAM workshop problem 28: An electromagnetic levitation device}, year = 1997 }
7. S. Kurz, J. Fetzer, G. Lehner, and W. M. Rucker, “Die Anwendung der BEM - FEM - Kopplungsmethode zur Behandlung dreidimensionaler nichtlinearer Abschirmungsprobleme niederfrequenter Felder am Beispiel des TEAM Problems 21,” Archiv für Elektrotechnik, vol. 80, Art. no. 2, 1997.
  - BibTeX
  BibTeX
  @article{kurz1997anwendung, author = {Kurz, Stefan and Fetzer, Joachim and Lehner, Günther and Rucker, Wolfgang M.}, journal = {Archiv für Elektrotechnik}, number = 2, pages = {91-104}, title = {Die Anwendung der BEM - FEM - Kopplungsmethode zur Behandlung dreidimensionaler nichtlinearer Abschirmungsprobleme niederfrequenter Felder am Beispiel des TEAM Problems 21}, volume = 80, year = 1997 }
8. S. Kurz, J. Fetzer, G. Lehner, and W. M. Rucker, “Die BEM - FEM - Kopplungsmethode zur Behandlung dreidimensionaler nichtlinearer Abschirmungsprobleme niederfrequenter Felder am Beispiel des TEAM Problems 21,” Archiv für Elektrotechnik, vol. 80, Art. no. 2, 1997.
  - BibTeX
  BibTeX
  @article{kurz1997anwendung, author = {Kurz, Stefan and Fetzer, Joachim and Lehner, Günther and Rucker, Wolfgang M.}, journal = {Archiv für Elektrotechnik}, number = 2, pages = {91-104}, title = {Die BEM - FEM - Kopplungsmethode zur Behandlung dreidimensionaler nichtlinearer Abschirmungsprobleme niederfrequenter Felder am Beispiel des TEAM Problems 21}, volume = 80, year = 1997 }
9. W. Rieger, M. Haas, C. J. Huber, G. Lehner, and W. M. Rucker, “Inverse Electromagnetic Medium Scattering Using a Variable Metric Method,” in IEEE AP-S International Symposium Digest, vol. 4, 1997, pp. 2621–2624.
  - BibTeX
  BibTeX
  @inproceedings{rieger1997inverse, author = {Rieger, Wolfgang and Haas, Martin and Huber, Christian J. and Lehner, Günther and Rucker, Wolfgang M.}, booktitle = {IEEE AP-S International Symposium Digest, vol. 4}, pages = {2621-2624}, title = {Inverse Electromagnetic Medium Scattering Using a Variable Metric Method}, year = 1997 }
1996
1. J. Fetzer, S. Kurz, G. Lehner, and W. M. Rucker, “Some aspects of force computation using BEM-FEM coupling,” in Proceedings of the 7th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, Graz, 1996, pp. 336–340.
  - BibTeX
  BibTeX
  @inproceedings{fetzer1996aspects, address = {Graz}, author = {Fetzer, Joachim and Kurz, Stefan and Lehner, Günther and Rucker, Wolfgang M.}, booktitle = {Proceedings of the 7th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering}, pages = {336-340}, title = {Some aspects of force computation using BEM-FEM coupling}, year = 1996 }
2. S. Kurz, J. Fetzer, G. Lehner, and W. M. Rucker, “The solution of TEAM workshop problem 10 using BEM-FEM coupling,” in Proceedings of the TEAM Workshop, Graz, 1996, pp. 31–33.
  - BibTeX
  BibTeX
  @inproceedings{kurz1996solution, address = {Graz}, author = {Kurz, Stefan and Fetzer, Joachim and Lehner, Günther and Rucker, Wolfgang M.}, booktitle = {Proceedings of the TEAM Workshop}, pages = {31-33}, title = {The solution of TEAM workshop problem 10 using BEM-FEM coupling}, year = 1996 }

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