He is lecturing and supervising undergraduate and graduate students in the field of Analog and RF IC Design at EPFL. His technical interests and expertise are in the field of very low-power analog and RF IC design, semiconductor device modeling, and inexact and error tolerant circuits and systems.
He has published more than 200 scientific papers and has contributed to numerous conference presentations and advanced engineering courses. Together with E. Vittoz and F. Krummenacher he is one of the developer of the EKV MOS transistor model and the author of the book "Charge-Based MOS Transistor Modeling - The EKV Model for Low-Power and RF IC Design" (Wiley, 2006). He has been member of several technical program committees, including the International Solid-State Circuits Conference (ISSCC) and European Solid-State Circuits Conference (ESSCIRC). He has served as a vice-chair for the 2000 International Symposium on Low Power Electronics and Design (ISLPED), exhibit chair for the 2000 International Symposium on Circuits and Systems (ISCAS) and chair of the technical program committee for the 2006 European Solid-State Circuits Conference (ESSCIRC). Since 2012 he has been elected as member of the IEEE Solid-State Circuits Society (SSCS) Administrative Commmittee (AdCom). He is also Chair of the IEEE SSCS Chapter of Switzerland.
1) Semiconductor device modeling
Following the development of the EPFL-EKV MOS transistor model (PhD of M. Bucher), we have investigated some fundamental issues on compact noise modeling of nanoscale bulk and double-gate MOS transistors (PhD of A.S. Roy). Another topic of interest is the development of a new compact model of organic devices.
2) Analog and RF IC Design
We are exploring how the analog-to-digital converter (ADC), which remains one of the most power hungry block in a digital RF receiver, can be replaced by a phase-ADC taking advantage of a direct quantization of the phase for constant envelope modulations (PhD candidate B. Banerjee).
After having investigated the use of high-Q bulk acoustic wave (BAW) resonators in the receiver part of an RF transceiver (PhD of J. Chabloz), we now are looking at how BAW resonators can be used in the transmitter and particularly in the power amplifier (PhD candidate M. Contaldo).
Another research topic that started recently is about the use of sampled radio for the implementation of ultralow-power RF transceivers. We are investigating whether the sampling radio architectures that were recently developped for cellular, WLAN and Bluetooth applications can be applied for ultralow-power RF transceivers for WSN applications (PhD candidate A. Heragu).
Finally, we are also looking at the design of a flexible sensor interface for in-vivo drug delivery systems using an asynchronous ADC with companding, avoiding the need of any clock and allowing for extending the dynamic range (DR), keeping an almost constant signal-to-noise ratio (SNR) (PhD candidate V. Balasubramanian).