Titre:
Continuous Time Bandpass Sigma-Delta Modulators
Conférencier:
Robert Sobot ,
University of Western Ontario, Canada
Lieu:
École Polytechnique de Montréal, Pavillon Lassonde, L-2708 ,
Date et heure:
vendredi le 14 mai 2010 de 08:30 à 16:30
Résumé: In this tutorial an introduction to continuous time bandpass Sigma-Delta modulators will be presented. After a short history, current problems associated with the analysis and design of tunable continuous time bandpass (CT BP) sigma–delta (Σ∆) modulators will be outlined. This specific modulator group is particularly promising within the context of software–defined radios. However, due to the nonlinear sampling element within a closed–loop s–domain system, the high level of analytical complexity makes current CT BP Σ∆ modulators difficult to implement. Specific problems addressed in this tutorial are the fundamental principles of the Σ∆ modulation process, analytical and design methodology, loop delay compensation techniques, monolithic implementation and possible application areas.
Note biographique: Robert Sobot, received the B.Sc. degree in engineering physics from the University of Belgrade, former Yugoslavia, in 1989, and the M.A.Sc. and the Ph.D. degrees in electrical engineering from Simon Fraser University, Canada, in 1996 and 2005 respectively. Prior to joining the Department of Electrical and Computer Engineering at the University of Western Ontario as an Assistant Professor in January 2006, he was a Research Assistant and a Sessional Teacher at Simon Fraser University, where he conducted research in RF integrated circuit design for applications in wireless systems. From 1996 to 2001 he was with PMC-Sierra Inc, Canada, developing CMOS mixed-signal integrated circuits for digital communications first as an Analog Circuit Designer, then as a Team Leader. Prior to 1994 he worked for number of companies in Europe and North America on various projects including MEMS pressure sensors, silicon IR detectors and radio controlled systems. He is a Member of PEO, IEEE, Circuits and Systems Society, and Solid-State Circuits Society. His current research interests include biologically inspired implantable ICs, biomedical IC applications, RF ICs for wireless communications, brain to machine interface, Sigma-Delta modulation and analog adaptive equalization.
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