Séminaire ETIS : Hassan Aboushady

Titre du séminaire et orateur

"RF Sigma-Delta ADC: Realizing the Software Defined Radio Dream".
Hassan Aboushady, Université Pierre-et-Marie-Curie, Paris VI.

Date et lieu

Mardi 18 septembre 2012, 11h.
ENSEA, salle 384.


Nowadays, transceivers capable of establishing a wireless communication using several standards while covering a large frequency range have very high power consumption and are therefore not convenient for portable devices. These transceivers are usually based on an RF ADC followed by programmable digital circuits that can easily adapt to several standards. The RF ADC is the main source behind the excessive power consumption of such transceivers.

In this work, we propose a new low-power RF receiver architecture suitable for portable devices dedicated to cognitive and software-defined radio application. This architecture is based on an RF bandpass ΣΔ ADC. This type of ADC can convert a narrow-band around an RF center frequency. Its power consumption can then be very low compared to the current solutions based very wide band ADCs.

In this presentation, the design and implementation of 3 fabricated RF Sigma-Delta ADC is presented.


Hassan Aboushady received the B.Sc. degree in Electrical Engineering from Cairo University, Egypt, in 1993, the M.Sc. and Ph.D. degrees in Electrical Engineering and Computer Science from the University of Pierre & Marie Curie, Paris VI, France in 1996 and 2002 respectively. He also obtained his accreditation to supervise research (HDR) from the same University in 2010.

In 1999, he worked on the design of high resolution audio Digital-to-Analog converters at Philips Research Laboratories, Eindhoven, The Netherlands. In 2001, he worked on the implementation of a baseband continuous-time Sigma-Delta modulator for RF receivers at STMicroelectronics, Crolles, France. In 2002, he was a post-doctoral research scientist at the Center of European Research in MicroElectronics, working on design automation for analog integrated circuits.

Since 2003, he is an Associate Professor at the University of Pierre and Marie Curie, Paris VI, France. In 2007 he was a visiting professor at the French University in Egypt and in 2011 he was a visiting professor at the Federal University of Rio Grande do Norte, Brazil.

His research interests include Sigma-Delta modulation, RF circuit design and Analog-to-Digital conversion. He is the author and co-author of more than 50 publications in these areas. He is the recipient of the 2004 best paper award in the IEEE Design Automation and Test in Europe Conference, as well as the recipient and the co-recipient of the 2nd and the 3rd best student paper awards of the IEEE Midwest Symposium on Circuits and Systems in 2000 and 2003 respectively. Dr. Aboushady serves as a TPC member of the International Conference on Microelectronics (ICM) and the Symposium on Integrated Circuit Design (SBCCI). He is also a member of the IEEE Circuits and Systems for Communications Committee (CASCOM).