"M.S. Defense: “High Performance Signal-Pole Multi-Throw T/R Switch Design for Cellular Applications”"

X. Shawn Wang, ECE M.S. Defense

April 8th (Monday), 11:30am
Harold Frank Hall (HFH), Rm 4164

The proliferation of slim and light weight smart phones, such as the iPhone 5 and Samsung Galaxy III, has created the demand for ultra-compact RF Front-end Modules (FEM) between the antenna and the multi-mode, multi-band RF transceiver SoC. Future system specifications beyond 3G require multi-standard Tx/Rx functions, hence utilizing a single-pole multiple-throw (SPMT) T/R switch in the RF FEM is becoming increasingly popular. Simultaneously, specific requirements for the antenna switch increase as well, including lower IL, higher isolation, higher power handling capability, high linearity, smaller size and lower cost. This thesis presents circuit techniques to achieve high linearity and good isolation for a SOI CMOS SP6T transmit/receive (T/R) antenna switch with asymmetric topology and a SP10T T/R antenna switch with 8 kV ESD co-design intended for quad-band (0.85/0.9/1.8/1.9-GHz) GSM and multiple W-CDMA operations.

About X. Shawn Wang:

X. Shawn Wang (SM’12) received the B.S degree in electrical engineering at University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2011, and is currently working toward the M.S. degree at the University of California, Santa Barbara (UCSB). In 2011, he was an R&D Intern with the Texas Instrument (TI) in Shenzhen, China, where he was an IC Engineer involved with DC-DC converter design. In 2012, he interned at Qualcomm Incorporated in San Diego, CA, where he worked on SERDES IC design using 20 nm CMOS process. His research interests include single-pole-multi-throw (SPMT) T/R switch in SOI CMOS processes for GSM/W-CDMA/LTE applications, synchronous step down DC-DC converter design and SERDES IC design.

Hosted by: Professor C. Patrick Yue