>>

Séminaire ASTRE : Sofiane Aloui

Titre du séminaire et orateur

“Analog is not dead” to Design mmW CMOS ICs.
Sofiane Aloui, ETIS, équipe ASTRE.

Date et lieu

Jeudi 20 décembre 2012, 14h30.
ENSEA, salle 318.

Résumé

Le développement d'objets communicants dédiés aux applications sans fil vise actuellement des débits de l'ordre du GBit/sec. Dans ce contexte, plusieurs laboratoires et entreprises s’investissent pour concevoir des systèmes opérant aux fréquences millimétriques. Ce séminaire a pour but de fournir des éléments clés pour réaliser des émetteurs-récepteurs sous les contraintes du domaine millimétrique, absentes ou négligeables lors de la conception de systèmes RF « classique ». En outre, afin de satisfaire la contrainte de faible coût, la technologie CMOS silicium est la plus adaptée. L'utilisation de cette technologie est un challenge en soi afin de concilier les aspects « pertes & performances » vis-à-vis des contraintes de puissance. La démarche de la conception de circuits millimétriques est progressive car il convient d'analyser puis d'optimiser les performances des composants passifs et actifs constituant la puce. Cela requiert la maitrise des phénomènes électromagnétisme ainsi que le domaine de la microélectronique. Deux applications seront détaillées : le téléchargement rapide des fichiers volumineux pour les réseaux domestiques opérant à 60 GHz et la conception de radars anti-collision à 80 GHz.

Telecommunication industry claims for increasing data rate in wireless communication systems. The major demand of high data rate concerns a large panel of applications. In this context, the research community is doing massive efforts to investigate at Millimeter wave frequency range. This seminar aims at sensitizing and describing the difficulties that must be considered during the design of mmW transceivers with a special focus on the design of power amplifiers. CMOS technology is most appropriate since it drives a fast time to market with a low cost for high integration volume. However, the use of CMOS technology is challenging to satisfy loss and performance trade-off under power constraints. The approach of the design is progressive because it is necessary to analyze and optimize the performance of passive and active components constituting the ICs, using different design methodology combining electromagnetic and microelectronics knowledge. Two applications that target mass market are detailed: home gigabit multimedia exchanging data transfer at 60 GHz and automotive radar communication operating at 80GHz.

Bio

Sofiane Aloui received the Master degree from Electrical Engineering School of RENNES in 2005. His PhD activities took place at IMS, the microelectronics laboratory of the University of Bordeaux. His researches were focused on the design of mmW CMOS Power Amplifiers. He received the Ph.D. degree in 2010 from the University of Bordeaux. From August 2011 to August 2012, he was a Postdoctoral Research Fellow with the Graduate Institute of Communication Engineering, National Taiwan University, where he was getting involved in the design of Car Radar systems. He was a member of the STMicroelectronics-IMS and NTU-TSMC joint research laboratories. Dr. Aloui has publications in first rank journals (MTT), international conferences (RFIC, EUMC) and national conferences (JNM). He received the Best Paper Award at the IEEE Latin American Symposium in Circuits and Systems (LASCAS) conference in 2010. In September 2012, he has pursed his researches as an assistant professor and has taught classes on Electrical Engineering at the EE’s department of ENSEA, FRANCE. He is working on the design of broad-band low cost transceivers dedicated for chip to chip communications in the context of SoC and NoC.

Retour