Event Details

An adaptive MIMO transmitter and receiver system operating at 140-GHz is presented for integrated communications and sensing. Using large-scale transmit and receive arrays at 140 GHz supports energy efficient feature detection with orthogonal coding for MIMO radar that will support better utilization of the aperture. Code-domain correlation in the receiver is also demonstrated for energy-efficient estimation of multiple transmitters simultaneously. We present circuit techniques based on low-resolution transmitter arrays and phase-oversampling receiver arrays for reduced power consumption and packaging techniques that support antenna in pacakge integration. I will share in-progress measurements indicating the performance of the radar and communications modes of operation.

November 14, 2025

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Host: Steve Crago
POC: Amy Kasmir

Speaker Bio

James Buckwalter is Professor of Electrical and Computer Engineering with UCSB and a Fellow of the IEEE. He was the recipient of a 2004 IBM Ph.D. Fellowship, 2007 Defense Advanced Research Projects Agency (DARPA) Young Faculty Award, 2011 NSF CAREER Award, and 2015 IEEE MTT-S Young Engineer Award. He has published more than 270 conference and journal papers on research related to RF, millimeter-wave, and high-speed optoelectronic circuits and systems. He is a founder and CTO of PseudolithIC.