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(July 15) A New Circuit Design Paradigm Exploiting Nonlinear Phenomena and mmWave Circuits and System for Communication and Imaging


A New Circuit Design Paradigm Exploiting Nonlinear Phenomena and mmWave Circuits and System for Communication and Imaging


2016/07/15 (Friday), 16:00


Wooram Lee (IBM T.J. Watson Research Center)


Wooribyul Seminar Room (#2201)


To accommodate ever-growing demands for power-efficient and high-data rate communication as well as numerous newly-emerging applications such as imaging and healthcare in silicon, I will talk about interesting research from Cornell University and IBM.  In the first part of my talk, I will introduce a new circuit design methodology inspired by nonlinear wave propagation. This method is closely related to intriguing phenomena in other physics disciplines such as optics, fluid mechanics, and plasma physics. Based on this approach, I demonstrate three IC examples in a CMOS process: 1) a passive 20-GHz frequency divider based on a nonlinear oscillation for the first time implemented in CMOS, 2) a noise-squeezing amplifier to achieve sensitivity toward the thermal noise limit, and 3) an LC lattice to generate less than 10-ps pulses with a high amplitude using constructive nonlinear wave interaction. In the second part of my talk, I will briefly introduce millimeter wave circuits and system research in the IBM for multi-Gbps wireless links and imaging radar system.     


Wooram Lee received his B.Sc. and M.S. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST) in 2001 and 2003, and his Ph.D degree at Cornell University in 2012. From 2003 to 2007, he was a research engineer at the Electronics and Telecommunications Research Institute (ETRI), Korea, where he worked on multi-Gbps optical transceivers and links. From 2012 to 2015, he was with Broadcom, CA, where he worked on ultra-high-speed serial link circuits and systems for optical, copper and backplane applications. Since 2015, he has been with the IBM T.J. Watson Research Center, NY, where he is working on millimeter wave phase array and reconfigurable radar circuits and systems for imaging and communication applications. 

Mr. Lee received the IEEE Solid-State Circuits Predoctoral Fellowship for 2010-2011 and the Samsung Graduate Fellowship for 2007-2012. He was a recipient of the Best Paper Award of the IEEE Radar Conference in 2009. He also received “신입직원상” and “우수논문상” in 2004 and 2007 from ETRI.