Wehrli, Silvan

Silvan Wehrli received his MSc in Electrical Engineering and Information Technology from ETH Zurich in 2005. His studies focused on high-frequency circuit design and optoelectronics. In his master thesis he designed and implemented a novel all-digital PLL. Silvan Wehrli is working as a PhD student in the field of local positioning and RF IC design.

Research Interests

• RF Integrated Circuit Design
• Local Positioning
• Wireless Communication
• All-digital Phase Locked Loops

Lectures

• Assistant for Integrated Circuits for High-Speed Communication

Publications

2011

• Comparison of Positioning Algorithms for a RTOF Radar System based on Multipath Simulations
  Silvan Wehrli and Heinz Jäckel
  in: 2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Guimarães, Portugal, 2011
  [ BiBTeX RIS ]

2010

• Indoor Positioning System using an Integrated Active Reflector
  Silvan Wehrli and Heinz Jäckel
  Workshop on Innovative Circuits, Systems and Applications for Local Position Estimation at the 2010 IEEE International Conference on Wireless Information Technology and Systems, 2010
  [ BiBTeX RIS ]
• 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 ]
• Non-Stochastic Multipath Simulations for an Indoor Local Positioning System
  Silvan Wehrli and Heinz Jäckel
  in: 2010 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Zurich, Switzerland, 2010
  [ BiBTeX RIS ]

2009

• Analysis and design of an efficient, fully integrated 1-8 GHz traveling wave power amplifier in 180 nm CMOS
  Jörg Carls, Frank Ellinger, Yulin Zhang, Udo Joerges and Silvan Wehrli
  (2009), in: International Journal of Microwave and Wireless Technologies(1-8)
  [ BiBTeX RIS DOI URL ]
• Differential Phase Frequency Detector with Zero Systematic Timing Misalignment
  George von Büren, Silvan Wehrli, Heinz Jäckel, Christian Kromer, Alex Huber and Thomas Morf
  in: International Semiconductor Conference Dresden (SCD), Dresden, Germany, 2009
  [ BiBTeX RIS ]
• 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 ]

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 ]
• Ultra low power local positioning systems for wireless sensor networks
  Ralf Eickhoff, Frank Ellinger, Andreas Ziroff, Thomas Ußmüller, Jörg Hüttner, Roland Gierlich, Silvan Wehrli and Mario Huemer
  in: Proceedings of the 17th ICT Mobile and Wireless Summit 2008, 2008
  [ BiBTeX RIS DOI ]

2007

• Design of a C-Band CMOS Class AB Power Amplifier for an Ultra Low Supply Voltage
  Jörg Carls, Frank Ellinger, Ralf Eickhoff, Paulius Sakalas, Stefan von der Mark and Silvan Wehrli
  in: Proceedings of the International Microwave and Optoelectronics Conference (IMOC), pages 786-789, 2007
  [ BiBTeX RIS DOI ]
• Local Positioning for Wireless Sensor Networks
  Frank Ellinger, Ralf Eickhoff, Roland Gierlich, Jörg Hüttner, Andreas Ziroff, Silvan Wehrli, Thomas Ußmüller, Jörg Carls, Viswanathan Subramanian, Marko Krcmar, Ralf Mosshammer, Solon Spiegel, Demosthenes Doumenis, Anastasis Kounoudes, Krzysztof Kurek, Yevhen Yashchyshyn, C. B. Papadias, P. Tragas, Antonis Kalis and Elena Avatagelou
  in: Proceedings of the IEEE Global Communication Conference (GLOBECOM), 2007
  [ BiBTeX RIS ]

2006

• EU PROJECT RESOLUTION: Reconfigurable Systems for Mobile Local Communication and Positioning
  Frank Ellinger, Jörg Carls, Silvan Wehrli, Heinz Jäckel, Christian Kromer, Leif Wiebking, Alexander Dabek, Jörg Hüttner, Richard Roskosch, Roland Gierlich, Claus Seisenberger, Mario Huemer, Ralf Mosshammer, Thomas Ußmüller, Robert Weigel, Viswanathan Subramanian, Marko Krcmar, Georg Böck, Demosthenes Doumenis, Anastasis Kounoudes, Krzysztof Kurek, Yevhen Yashchyshyn, Rafal Szumny, Antonis Kalis, Elena Avatagelou, Anastasia Garbi and Solon Spiegel
  in: Proceedings of the International Conference on Wireless Information Networks and Systems, 2006
  [ BiBTeX RIS ]

Patents

• M. Kossel, T. Morf, M. Schmatz and S. Wehrli, "Phase Locked Loop and Method for Adjusting the Frequency and Phase in the Phase Locked Loop", United States Patent, US 7,403,073 B2, 2008

Supervised Student Projects

Master Theses

• Spurs Reduction in an All-Digital PLL (SS09)
• Design and Implementation of a Digitally Controlled Oscillator (DCO) (WS07-SS08)
• Miller and Injection-Locked Frequency Dividers in 0.18um CMOS (SS07)

Semester Theses

• Active Reflector PCB Integration (SS10)
• Self-Calibration and Control Circuit for Programmable PLLs (SS07)
• Mixer for the RESOLUTION System in 0.18um CMOS (WS 06/07)
• LNA for the RESOLUTION System in 0.18um CMOS (WS 06/07)