October 25, 2013
Hosted by: Harish Krishnaswamy
Speaker: Dr. Alberto Valdes-Garcia, IBM T.J. Watson
This talk presents the design and measurement of a SiGe BiCMOS W-band (~94 GHz) phased-array transceiver IC with an in-package antenna array. The design targets radar and active imaging applications where light weight and low volume are important considerations; it also supports communication. By tiling an appropriate number of packaged ICs on a circuit board, any arbitrary antenna aperture can be realized, while maintaining ~?/2 antenna element spacing. The IC integrates 32 receive elements and 16 transmit elements to support 16 dual polarized antennas in a package. It is fabricated in the IBM SiGe BiCMOS8HP 0.13um process, occupies an area of 6.6X6.7mm2, and operates from 2.7V (analog/RF) and 1.5V (digital) supplies. Measurement results show 8dB receiver NF and 2dBm transmitter output power per element at 94GHz in both polarizations.
Alberto Valdes-Garcia is currently a Research Staff Member and Manager of the RF Circuits and Systems Group at the IBM T. J. Watson Research Center. He received the Ph.D. degree in Electrical Engineering from Texas A&M University in 2006. His present work is on silicon-integrated millimeter-wave systems and carbon electronics.
From 2006 to 2009, Dr. Valdes-Garcia served in the IEEE 802.15.3c 60GHz standardization committee. Since 2009 he serves as Technical Advisory Board member with Semiconductor Research Corporation (SRC), where he was Chair of the Integrated Circuits and Systems Sciences Coordinating Committee in 2011 and 2012. In Spring 2013, he was also an Adjunct Assistant Professor at Columbia University. He holds 8 issued US patents with 25+ pending. His scholarly work (65+ authored or co-authored publications) has already received more than 1300+ independent citations in indexed journals. He is a co-Editor of the book 60GHz technology for Gbps WLAN and WPAN: From Theory to Practice (Wiley, 20011).
Dr. Valdes-Garcia is the winner of the 2005 Best Doctoral Thesis Award presented by the IEEE Test Technology Technical Council (TTTC), the recipient of the 2007 National Youth Award for Outstanding Academic Achievements, presented by the President of Mexico, and a co-recipient of the 2010 George Smith Award presented by the IEEE Electron Devices Society. In 2013, he was selected by the National Academy of Engineering for its Frontiers of Engineering Symposium.