Barras, David

I graduated in 1997 from the Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, where I received my Diploma in Electrical Engineering. From 1997 to 2003, I was with ETA S.A. (Swatch Group) where I worked as an RF engineer for pagers and other RF applications embedded in wrist-watches (RDS FM-receiver, GPS, Bluetooth...). Since 2003, I'm back in the academic world at the Swiss Federal Institute of Technology of Zürich (ETHZ), Switzerland, where I work as a Ph. D. Student at the Electronic Laboratory (IfE) in the field of CMOS radio frequency integrated circuits (RFIC) for ultra-wideband (UWB) wireless applications.

Research Interests

• BiCMOS Analog & Radio Frequency Integrated Circuit Design
• Ultra-wideband Radio Technology
• Carrier-based Impulse-Radio UWB Transceiver in 0.18 um CMOS

Lectures (past and present)

Assistant for "Networks and Circuits II" (3 years)
Assistant for "Integrated Circuits for High-Speed Communications"

Publications (updated May-2010)

2010

• Integrated Active Pulsed Reflector for an Indoor Local Positioning System
  Silvan Wehrli, Roland Gierlich, Jörg Hüttner, David Barras, Frank Ellinger and Heinz Jäckel
  (2010), in: Microwave Theory and Techniques, IEEE Transactions on, 58:2(267 -276)
  [ BiBTeX RIS DOI ]

2009

• A Low-Power Baseband ASIC for an Energy-Collection IR-UWB Receiver
  David Barras, Robert Meyer-Piening, George von Büren, Walter Hirt and Heinz Jäckel
  (2009), in: J. of Solid-State Circuits, 44:6(1721-1733)
  [ BiBTeX RIS ]
• A Multi-modulation Low-power FCC/EC-compliant IR-UWB RF Transmitter in 0.18-um CMOS
  David Barras, George von Büren, Walter Hirt and Heinz Jäckel
  in: IEEE Radio Frequency Integrated Circuits Symposium (RFIC2009), Boston, Massachusetts, 7-9 June, 2009
  [ BiBTeX RIS ]
• A Spectrum-Shaping Output Stage for IR-UWB Transmitters
  David Barras, Walter Hirt and Heinz Jäckel
  (2009), in: IEEE Transactions on Microwave Theory and Techniques, 57:6(1470-1478)
  [ BiBTeX RIS ]
• A Wideband 0 to 60 dB CMOS Variable Gain Amplifier for IR-UWB I/Q Receivers
  David Barras, Walter Hirt and Heinz Jäckel
  in: 35th European Solid-State Circuits Conference, Athens, Greece, 2009
  [ BiBTeX RIS ]
• Design and phase noise analysis of a multiphase 6 to 11 GHz PLL
  George von Büren, David Barras, Heinz Jäckel, Alex Huber, Christian Kromer and Marcel Kossel
  in: ESSCIRC, 2009. ESSCIRC '09. Proceedings of, pages 384-387, 2009
  [ BiBTeX RIS DOI ]
• Integrated Active Pulsed Reflector for FMCW Radar Localization
  Silvan Wehrli, David Barras, Frank Ellinger and Heinz Jäckel
  in: Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International, Boston, USA, pages 81-84, 2009
  [ BiBTeX RIS DOI ]
• Interference Characterization and UWB Channel Measurements for Wireless Intensive Care Patient Monitoring
  Oliver Lauer, David Barras, Jürg Fröhlich, Heinz Jäckel and Ruediger Vahldieck
  in: International Conference on Electromagnetics in Advanced Applications, ICEAA09, Torino, Italy, 2009
  [ BiBTeX RIS ]
• Self-Calibrated Local Oscillator for Carrier-based Impulse Radio UWB Transceivers
  Marco Zahner, David Barras and Heinz Jäckel
  in: International Semiconductor Conference (SCD), Dresden, Germany, 29-30 Apr., 2009
  [ BiBTeX RIS ]
• Specification of ADC Interface for an Interference Robust UWB Impulse Radio
  Oliver Lauer, David Barras, Marco Zahner, Naceur Karoui, Jürg Fröhlich, Heinz Jäckel and Ruediger Vahldieck
  in: IEEE International Conference on Ultra-Wideband (ICUWB), Vancouver, Canada, pages 728-233, 2009
  [ BiBTeX RIS ]

2008

• A 4.5-5.3 GHz Quadrature VCO with Complementary Couplers in 0.25um CMOS
  George von Büren, Lucio Rodoni, David Barras, Silvan Wehrli and Heinz Jäckel
  in: Proceedings of the Semiconductor Conference Dresden, Dresden, Germany, 2008
  [ BiBTeX RIS ]
• Requirements of Preselect Filter and Front-End Linearity for Low-Power UWB Systems Operating in a ‘Real World’ Interference Scenario
  Oliver Lauer, David Barras, Ruediger Vahldieck, Heinz Jäckel and Jürg Fröhlich
  in: Proceedings of the EUROEM2008, 21-25 July 2008, Lausanne, 2008
  [ BiBTeX RIS ]

2006

• A robust front-end architecture for low-power UWB radio transceivers
  David Barras, Frank Ellinger, Heinz Jäckel and Walter Hirt
  (2006), in: Microwave Theory and Techniques, IEEE Transactions on, 54:4(1713-1723)
  [ BiBTeX RIS DOI ]
• Low-Power Ultra-Wideband Wavelets Generator with Fast Start-Up Circuit
  David Barras, Frank Ellinger, Heinz Jäckel and Walter Hirt
  (2006), in: IEEE Trans. Microwave Theory Techniques, Vol 54:No. 5(pages 2138-2145)
  [ BiBTeX RIS ]

2004

• A low supply voltage SiGe LNA for ultra-wideband frontends
  David Barras, Frank Ellinger, Heinz Jäckel and Walter Hirt
  (2004), in: Microwave and Wireless Components Letters, IEEE, 14:10(469-471)
  [ BiBTeX RIS DOI ]

2003

• High-Q inductors on digital VLSI CMOS substrate for analog RF applications
  Frank Ellinger, Marcel Kossel, M. Huber, M. Schmatz, Christian Kromer, G. Sialm, David Barras, Lucio Rodoni, George von Büren and Heinz Jäckel
  (2003), in: Microwave and Optoelectronics Conference, 2003. IMOC 2003. Proceedings of the 2003 SBMO/IEEE MTT-S International, 2:""(869-872 vol.2)
  [ BiBTeX RIS DOI ]

2002

• A Comparison between Ultra-Wideband and Narrowband Transceivers
  David Barras, Frank Ellinger and Heinz Jäckel
  in: Conference Proceedings of TR-Labs Wireless, 2002
  [ BiBTeX RIS ]