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

Papers

2016

254.
Anders , J. ; Handwerker , J. ; Schlecker , B. ; Ortmanns , M. ; Möser , J. ; Schnegg , A. ; Lips , K.
Using CMOS voltage-controlled oscillators for ultra-fast rapid scan ESR experiments
58th Rocky Mountain Conference on Magnetic Resonance, Breckenridge, USA
July 2016
253.
Chu , C. ; Wagner , J. ; Al Marashli , A. ; Chi , J. ; Ortmanns , M.
A Study on Op-amp Nonlinearity in a Single-bit CT Modulator Employing GBW Compensation
Conference on PhD Research in Microelectronics and Electronics (PRIME 2016), Lisbon, Portugal
June 2016
252.
Wagner , J. ; Ritter , R. ; Ortmanns , M.
STF Engineering in CT Sigma-Delta Modulators using www.sigma-delta.de
Conference on PhD Research in Microelectronics and Electronics (PRIME 2016), Lisbon, Portugal
June 2016
251.
Haas , M. ; Ortmanns , M.
A floating high-voltage level-shifter with high area efficiency for biomedical implants
12th Conference on PhD Research in Microelectronics and Electronics (PRIME 2016), Lisbon, Portugal
June 2016
250.
Djekic , D. ; Ortmanns , M. ; Fantner , G. ; Anders , J.
A Tunable, Robust Pseudo-Resistor with Enhanced Linearity for Scanning Ion-Conductance Microscopy
IEEE International Symposium on Circuits and Systems (ISCAS 2016), Montréal, Québec, Canada
May 2016
249.
Haas , M. ; Bihr , U. ; Anders , J. ; Ortmanns , M.
A Bidirectional Neural Interface IC with High Voltage Compliance and Spectral Separation
IEEE International Symposium on Circuits and Systems (ISCAS 2016), Montréal, Québec, Canada
May 2016
248.
Wagner , J. ; Ritter , R. ; Ortmanns , M.
Using www.sigma-delta.de to Rapidly Obtain ELD Compensated CT ΣΔ Modulators
IEEE International Symposium on Circuits and Systems (ISCAS 2016), Montréal, Québec, Canada
May 2016
247.
Al Marashli , A. ; Anders , J. ; Ortmanns , M.
A Hybrid Comparator for High Resolution SAR ADC
IEEE International Symposium on Circuits and Systems (ISCAS 2016), Montréal, Québec, Canada
May 2016
246.
Vogelmann , P. ; Haas , M. ; Anders , J. ; Ortmanns , M.
Design eines Sample-and-Hold Verstärkers für einen 16-Bit SD-Modulator in 180nm CMOS
Analogworkshop 2016, Leibniz Universität Hannover
March 2016
245.
Anders , J. ; Handwerker , J. ; Ortmanns , M. ; Boero , G.
A low-power high-sensitivity single-chip receiver for NMR microscopy
Journal of Magnetic Resonance, vol. 266, pp. 41-50
March 2016
244.
Djekic , D. ; Ortmanns , M. ; Fantner , G. ; Anders , J.
Linearisierte Pseudo-Widerstände mit hoher Robustheit für die Raster-Ionenstrommikroskopie
Analogworkshop 2016, Leibniz Universität Hannover
March 2016
243.
Ritter , R. ; Kauffman , J. G. ; Becker , J. ; Ortmanns , M.
A 10 MHz Bandwidth, 70 dB SNDR Continuous Time Delta-Sigma Modulator With Digitally Improved Reconfigurable Blocker Rejection
IEEE Journal of Solid-State Circuits, vol. 51, no. 3, pp. 660-670
March 2016
242.
Handwerker , J. ; Schlecker , B. ; Wachter , U. ; Radermacher , P. ; Ortmanns , M. ; Anders , J.
A 14 GHz, battery operated, point-of-care ESR spectrometer based on a 130 nm CMOS ASIC
IEEE International Solid-State Circuits Conference (ISSCC 2016), San Francisco, CA, USA
January 2016
241.
Pagin , M. ; Haas , M. ; Becker , J. ; Ortmanns , M.
Delta compression in time-multiplexed multichannel neural recorders
12th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME), pp. 1-4, Lisbon, Portugal
2016

2015

240.
Ritter , R. ; Ortmanns , M.
Continuous-Time Delta-Sigma ADCs With Improved Interferer Rejection
Emerging and Selected Topics in Circuits and Systems, IEEE Journal, vol.5, no.4, pp.500-513
December 2015
239.
Fahmy , S. ; Dietl , M. ; Sareen , P. ; Ortmanns , M. ; Anders , J.
A BW-tracking semi-digital PLL with near-optimal VCO phase noise shaping in low-cost 0.4 μm CMOS achieving 700 fs rms phase jitter
IEEE Nordic Circuits and Systems Conference (NORCAS) 2015, Oslo, Norway
October 2015
238.
Elkafrawy , A. ; Anders , J. ; Ortmanns , M.
A 10-bit Reference Free Current Mode SAR ADC with 58.4 dB SFDR at 50 MS/s in 90 nm CMOS
IEEE Nordic Circuits and Systems Conference (NORCAS), Oslo, Norway
October 2015
237.
Liu , T. ; Anders , J. ; Ortmanns , M.
A Bidirectional Optical Transcutaneous Telemetric Link for Brain Machine Interface
Electronic letters
September 2015
236.
Ritter , R. ; Torta , P. ; Dörrer , L. ; Di Giandomenico , A. ; Herzinger , S. ; Ortmanns , M.
A Multimode CT ΔΣ-Modulator with a Reconfigurable Digital Feedback Filter for Semi-Digital Blocker/Interferer Rejection
European Solid-State Circuits Conference (ESSCIRC), Graz, Austria
September 2015
235.
Elkafrawy , A. ; Anders , J. ; Ortmanns , M.
Design and Validation of a Current Mode Based SAR ADC in 90 nm CMOS
Kleinheubacher Tagung, Miltenberg, Germany
September 2015
234.
Lorenz , M. ; Becker , J. ; Ortmanns , M.
A Hybrid of Unscented Kalman Filter and Genetic Algorithm for State and Parameter Estimation in Sigma-Delta Modulators
Electronics Letters, IEEE
August 2015
233.
Handwerker , J. ; Eschelbach , M. ; Hoffmann , A. ; Ortmanns , M. ; Scheffler , K. ; Anders , J.
An Array of Active TX/RX 19F NMR Field Probes for Gradient Trajectory Mapping
Euromar 2015, Prague, Czech Republic
July 2015
232.
Al Marashli , A. ; Anders , J. ; Ortmanns , M.
Design study on a SAR ADC using an incremental sigma-delta-DAC
11th Conference on PhD Research in Microelectronics and Electronics (IEEE PRIME 2015), Glasgow, Scotland, United Kingdom
June 2015
231.
Chu , C. ; Anders , J. ; Becker , J. ; Ortmanns , M.
Finite GBW Compensation Technique for CT Delta-Sigma Modulators with Differentiator Based ELD Compensation
IEEE NEWCAS 2015, Grenoble, France
June 2015
230.
Elkafrawy , A. ; Anders , J. ; Ortmanns , M.
A 10-bit 150 MS/s Current Mode SAR ADC in 90 nm CMOS
11th IEEE Conference on PhD Research in Microelectronics and Electronics (IEEE PRIME 2015), Glasgow, Scotland, United Kingdom
June 2015

Books

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