Low-Power Design Techniques for CMOS Ultra-wideband Millimeter-wave Transceivers

Dr. Jeyanandh Paramesh, Carnegie Mellon University

DateTime: 
Wednesday, October 19, 2011 - 10:00am - 12:00pm
Location: 

CoRE Board Room 701

The mm-wave frequency bands offer enormous potential for multi-Gb/s communications as well as emerging imaging and ranging applications. The realization of this potential will be underpinned by the development of high-performance, power-efficient transceivers in nanoscale CMOStechnologies. Two key challenges must be met towards achieving this goal. First, the mm-wave front-end circuits must be designed to operate over extremely wide bandwidths of several tens of GHz, both to exploit the large bandwidth availability, and also to provide sufficient margins to tolerate process, voltage and temperature variations that are increasingly problematic in nanoscale CMOS. Second, reducing power consumption in the front-end is imperative especially since phased-arrays are mandated in mm-wave transceivers. This talk presents circuit solutions to the aforementioned challenges. We introduce design approaches to the unilateralization of common-source and common-gate gain amplifiers, of both the narrowband and ultra-wideband varieties. We then present design techniques for mm-wave voltage-controlled oscillators that tune over several tens of GHz. These techniques are demonstrated through several CMOS prototypes operating in the 24 GHz and 60 GHz bands.

BIOSKETCH

Jeyanandh Paramesh received the B.Tech, degree from IIT, Madras, the M.S degree from Oregon State University and the Ph.D. degrees from the University of Washington, Seattle, all in Electrical Engineering. He is currently Assistant Professor of Electrical and Computer Engineering at Carnegie Mellon University. He has held product development positions with Analog Devices, where he designed high-performance data converters, and Motorola where he designed analog and RF integrated circuits for cellular transceivers. From 2002 to 2004, he was a graduate student researcher with the Communications Circuit Lab, Intel where he developed multi-antenna receivers, high-efficiency power amplifiers and high-speed data converters high data-rate wireless transceivers. His research interests include the design of RF and mixed-signal integrated circuits and systems for a wide variety of applications