Institute of Microelectronics

Publications - Prof. Dr.-Ing. M. Ortmanns

Papers  Books  Patents 

Papers

2011

129.
J. G. Kauffman, P. Witte, J. Becker and M. Ortmanns, "An 8.5 mW Continuous-Time Delta-Sigma Modulator With 25 MHz Bandwidth Using Digital Background DAC Linearization to Achieve 63.5 dB SNDR and 81 dB SFDR", IEEE Journal of Solid-State Circuits, Dec. 2011.
128.
P. Witte, J. G. Kauffman, J. Becker and M. Ortmanns, "Correlation Based Background Error Estimation Technique for Bandpass Delta-Sigma ADC DACs", IEEE Trans. Circuits Syst. II, Express Briefs, Nov. 2011.
127.
A. Zahabi, F. Jamal, M. Anis and M. Ortmanns, "Integrated Microstrip/Coplanar/Tapered Transmission Lines for Bandpass Sigma-Delta Modulators", 12. ITG/GMM-Fachtagung Analog, Erlangen, Germany, Nov. 2011.
126.
A. Zahabi, M. Anis and M. Ortmanns, "3.1GHz-3.8GHz Integrated Transmission Line Super-Regeneration Amplifier with Degenerative Quenching Technique for Impulse-FM-UWB Transceiver", European Solid-State Circuit Conf. (ESSCIRC), pp. 387-390, Helsinki, Finland, Sep. 2011.
125.
C. Chu, J. G. Kauffman, S. Anis and M. Ortmanns, "A 4-bit, 500M/s Flash Quantizer Using an Auto-Zeroing Offset Compensated Comparator in 250nm SiGe", Kleinheubacher Tagung, Miltenberg, Germany, Sep. 2011.
124.
R. Ritter and M. Ortmanns, "Aktuelle Entwicklung zu frequenzumsetzenden Delta-Sigma ADCs für mobile Empfänger", Kleinheubacher Tagung, Miltenberg, Germany, Sep. 2011.
123.
H. Xu, S. Lange, H. Pless, J. Becker, R. Hornig, E. Hennig and M. Ortmanns, "An AC-Powered Optical Receiver Consuming 270µW for Transcutaneous 2Mb/s Data Transfer", 45. DGBMT Jahrestagung (BMT 2011), Freiburg, Germany, Sep. 2011.
122.
K. Sooksood, E. Noorsal, R. Hornig, J. Becker and M. Ortmanns, "Integrated Front-end for a Highly Parallel Universal Functional Electrical Stimulation Platform", 45. DGBMT Jahrestagung (BMT 2011), Freiburg, Germany, Sep. 2011.
121.
A. Zahabi, M. Anis and M. Ortmanns, "Integrated Transmission Line Super-Regeneration Amplifier for Impulse-FM-UWB Transceiver", Kleinheubacher Tagung, Miltenberg, Germany, Sep. 2011.
120.
H. Xu and M. Ortmanns, "Wide-band Wide-input Efficiency-enhanced CMOS Rectifier with Self-temperature and Process Compensation", IEEE Semiconductor Conference Dresden (SCD), Dresden, Germany, Sep. 2011.
119.
T. Brückner, C. Zorn, W. Mathis and M. Ortmanns, "A single DAC CT ΣΔ Modulator with Butterworth STF characteristic", The 54th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), Seoul, South Korea, Aug. 2011.
118.
C. Zorn, S. Stegmann, T. Brückner, M. Ortmanns and W. Mathis, "STF Optimization of 1-Bit CT ΣΔ Modulators Based on Scaled Loop Filter Coefficients", European Conference on Circuit Theory and Design, Linköping, Sweden, Aug. 2011.
117.
M. Anis, M. Ortmanns and N. Wehn, "A 2.5mW 2Mb/s Fully Integrated Impulse-FM-UWB Transceiver in 0.18µm CMOS", In Proceeding of International Microwave Symposium (IMS), Baltimore, USA, Jun. 2011.
116.
P. Witte, J. G. Kauffman, J. Becker and M. Ortmanns, "A digital background correction for DAC nonlinearities in lowpass and bandpass delta-sigma modulators - theory and implementation", The 9th Int. Conf. on Sampling Theory and Applications (SampTA), Singapore, May 2011.
115.
C. Zorn, S. Stegmann, T. Brückner, M. Ortmanns and W. Mathis, "A Novel Optimization Method for CT Sigma-Delta-Modulators Using a Switched System Model", The IEEE International Symposium on Circuits and Systems, Rio de Janeiro, Brazil, May 2011.
114.
K. Sooksood, E. Noorsal, J. Becker and M. Ortmanns, "A Neural Stimulator Front-End with Arbitrary Pulse Shape, HV Compliance and Adaptive Supply Requiring 0.05mm2 in 0.35μm HVCMOS", IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA, Feb. 2011.
113.
J. G. Kauffman, P. Witte, J. Becker and M. Ortmanns, "An 8mW 50MS/s CT ΔΣ Modulator with 81dB SFDR and Digital Background DAC Linearization", IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA, Feb. 2011.
112.
S. Lange, H. Xu, C. Lang, H. Pless, J. Becker, H. -. Tiedtke, E. Hennig and M. Ortmanns, "An AC-Powered Optical Receiver Consuming 270μW for Transcutaneous 2Mb/s Data Transfer", IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA, Feb. 2011.
111.
S. Stegmann, C. Zorn, T. Brückner, M. Ortmanns and W. Mathis, "Anwendung einer Switched-System Modellierung zur Stabilitätsanalyse von zeitkontinuierlichen singlebit SD-Wandlern", Advances in Radio Science, Vol. 9, pp. 209-213 , 2011.

2010

110.
H. Xu and M. Ortmanns, "Highly Efficient Fully Integrated CMOS Rectifiers", Kleinheubacher Tagung 2010 (KHT 2010), Miltenberg, Germany, Oct. 2010.
109.
E. Noorsal, K. Sooksood, H. Xu and M. Ortmanns, "A Universal Functional Electrical Stimulation Platform for Rapid Prototyping", DGBMT Jahrestagung (BMT 2010), Rostock-Warnemünde, Germany, Oct. 2010.
108.
U. Bihr and M. Ortmanns, "Entwurf eines frequenz-separierten Aufnahmekanals für neuronale Signale in 0.35µm CMOS", Kleinheubacher Tagung 2010 (KHT 2010), Miltenberg, Germany, Oct. 2010.
107.
M. Anis, M. Ortmanns and N. Wehn, "RF Spectrum Sensing Technique for Cognitive UWB Radio Network", In Proceeding of European Solid-State Circuits Conference (ESSCIRC), Sevilla, Spain, Sep. 2010.
106.
E. Noorsal and M. Ortmanns, "An Architecture for a Universal Neural Stimulator with almost Arbitrary Current Waveform", 32nd Annual Int. Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2010), Buenos Aires, Argentina, Sep. 2010.
105.
P. Witte and M. Ortmanns, "Background DAC Error Estimation Using a Pseudo Random Noise Based Correlation Technique for Sigma-Delta Analog-to-Digital Converters.", IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 57, Jul. 2010.

Books

2025

10.
Buhmann, A.; Lanniel, A.; Hiller, T.; Sporer, M.; Reich, S.; Ortmanns, M.
Interface Circuits
Publisher: Ed. Elsevier
in Comprehensive Microsystems, 2nd ed., Y. B. Gianchandani, Volume 1, 2025, pp. 452–479 Edition
2025
DOI:10.1016/B978-0-323-95478-5.00040-6

2023

9.
Chan, C.-H.; Zhu, Y.; Qi, L.; Sin, S.-W.; Ortmanns, M.; Martins, R. P.
High-Performance Oversampling ADCs
Paulo da Silva Martins, R., Mak, PI. (eds) Analog and Mixed-Signal Circuits in Nanoscale CMOS. Analog Circuits and Signal Processing. Springer, Cham. Edition
January 2023
DOI:doi.org/10.1007/978-3-031-22231-3_5

2021

8.
Haas, M.; Ortmanns, M.
Neural Stimulation Circuits
Publisher: River Publishers
Selected Topics in Biomedical Circuits and Systems, Eds Minkyu Je and Myung Hoon Sunwoo Edition
February 2021
ISBN:9788770221481

2019

7.
Vogelmann, P.; Mokhtar, M. A.; Luo, Y.; Ortmanns, M.
Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits: Advances in Analog Circuit Design 2019
Publisher: Springer
2019
ISBN:978-3030252663

2016

6.
Ortmanns, M.; Ritter, R.; Chi, J.
ΣΔ ADCs with Improved Interferer Robustness
Volume Wideband Continuous-time SD-ADCs, Automotive Electronics, and Power Management: Advances in Analog Circuit Design 2016
Publisher: Springer
2016
ISBN:978-3319416694

2014

5.
Brückner, T.; Ortmanns, M.
Automated Design of High-Speed Continuous-Time Sigma-Delta Modulators employing Compensation and Correction of Non-Idealities, in High-Performance AD and DA Converters, IC Design in Scaled Technologies, and Time-Domain Signal Processing
Publisher: Springer
2014

2007

4.
Ortmanns, M.; Buhmann, A.; Manoli, Y.
Interface Circuits in Comprehensive Microsystems
Publisher: Elsevier Pubs.
2007

2006

3.
Buhmann, A.; Keller, M.; Ortmanns, M.; Gerfers, F.; Manoli, Y.
Time-Continuous Delta-Sigma A/D Converters - From Theory to Practical Implementation
Publisher: in Advanced Signal Processing, Circuits, and Systems Design Techniques for Communications, (eds. Paliouras, V.; Stouraitis, Th.; Ioinovici, A.)
2006

2005

2.
Ortmanns, M.; Gerfers, F.
Continuous-Time Sigma-Delta A/D Conversion, Fundamentals, Error Correction and Robust Implementations
Publisher: Springer Pubs.
2005

2003

1.
Ortmanns, M.
Error Compensation in Continuous-Time Sigma-Delta A/D Converters
Publisher: PhD Thesis, Albert-Ludwigs-University Freiburg
2003

Patents

  1. A. Herkle, J. Becker, M. Ortmanns
    [DE] Verfahren und Vorrichtung zur Erzeugung einer digitalen Signatur
    DE102016204055A1, Patent record available from the German Patent
    2016

  2. R. Ritter, M. Schimper, W. Schelmbauer, M. Ortmanns
    Analog-to-digital converter, signal processor, and method for analog-to-digital conversion.
    US8760330, Patent record available from the US Patent Office
    2014

  3. A. Rocke, M. Ortmanns und N. Unger
    Device for controlling the electric charge on stimulation electrodes.
    EP1827591, Patent record available from the European Patent
    2007

  4. M. Ortmanns, Y. Manoli und F. Gerfers
    Controlled power source, in particular for a digital/analogue converter in continuous time sigma/delta modulators.
    EP1550222, Patent record available from the European Patent
    2005

  5. A. Rocke, M. Ortmanns und N. Unger
    Device for controlling the electric charge on stimulation electrodes.
    WO06063743, Patent record available from the World Intellectual Property Organization (WIPO)
    2006

  6. M. Ortmanns und Y. Manoli
    Method for the characterisation of and for the automatic correction of linear errors in analog/digital converters.
    WO05078936, Patent record available from the World Intellectual Property Organization (WIPO)
    2005

  7. M. Ortmanns, Y. Manoli und F. Gerfers
    Controlled power source, in particular for a digital/analogue converter in continuous time sigma/delta modulators.
    WO04034588, Patent record available from the World Intellectual Property Organization (WIPO)
    2004

  8. M. Ortmanns, Y. Manoli und F. Gerfers
    Controlled current source, in particular for digital/analogue converters in continuous-time sigma/delta modulators.
    US7151474, Patent record available from the US Patent Office
    2006

  9. M. Ortmanns, Y. Manoli und F. Gerfers
    Controlled power source, in particular for a digital/analogue converter in continuous time sigma delta modulators.
    US20060055580, Patent record available from the US Patent Office
    2006