Circuits and Systems for Next Generation Wireless Communication

Mixer-based transmitters have been dominant for approximately 100 years, however for more than a decade RF-DACs have demonstrated the ability to combine the functionality of the DAC, upconverter and amplification stages of a transmitter into a single block. The switched-capacitor power amplifier (SCPA) is a versatile RF-DAC that operates in a voltage mode and uses transistors only as switches. In this talk, I will provide a tutorial introduction of the SCPA and present architectural examples that enable both frequency reconfigurability and operation up to mm-Wave, supporting up to 3Gb/s transmission rates. I will also introduce some new uses of algorithmic designs for RF passives.

Jeffrey Walling

Associate Professor, Virginia Tech on October 20, 2023 at 10:15 AM in EB3 2207
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Jeff Walling received his BS from University of South Florida and his MS and PhD from University of Washington, all in Electrical Engineering. He has held industrial positions at Motorola, Intel, Qualcomm and Skyworks. His research has primarily focused on circuits for wireless communications and sensing. From 2012-2019, he was an is an assistant, then associate professor at University of Utah. Then he was head of RF transceivers at Tyndall National Institute in Cork, Ireland. Most recently, he is an associate professor at Virginia Tech. He has served as an associate editor for TCAS-II, TCAS-I and JSSC, and the technical program committee for RFIC, ISSCC and NEWCAS.

Electrical and Computer Engineering Colloquia

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