University of California, Riverside

Department of Electrical and Computer Engineering



Kenle Chen: Broadband Microwave Power Amplifiers and Their System Integrations for Next-Generation Wireless Radio Front-Ends


Kenle Chen: Broadband Microwave Power Amplifiers and Their System Integrations....
 
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Kenle Chen: Broadband Microwave Power Amplifiers and Their System Integrations for Next-Generation Wireless Radio Front-Ends

February 20, 2013 - 3:00 pm
Bourns Hall A265

Smart communication systems, well known as cognitive radios and software-defined radios, are expected to evolve from lab research to commercial reality in the next decade. One of the major bottlenecks for these sys-tems lies in the hardware realization, since the radio front-ends are required to cover broad frequency ranges in order to support multiple communication standards. As the essential block in a wireless system, power am-plifiers (PAs) capable of operating over wide bandwidths have been identified as the key enabling technology. In this talk, I will introduce the state-of-the-art and future directions of research on microwave/RF power amplifi-ers, as well as radio systems in general. In particular, my work on design methodologies of broadband highly efficient PAs will be presented, which exhibit record-high performances in terms of bandwidth and efficiency. Moreover, a revolutionary technology will be introduced for direct integration of PAs and high-quality-factor tun-able filters (co-design), achieving globally optimized design compared to the conventional approach of inde-pendent design. It particularly provides the ideal solution for next-generation all-digital radio transmitters. The-se novel technologies will not only advance the state-of-the-art, but open new horizons in design and imple-mentation of future smart communication systems.

Biography: Mr. Kenle Chen received the Bachelor's degree in communication engineering from Xi'an Jiaotong University, China in 2005 and the Master's degree in electronics and information engineering from Peking Uni-versity, China in 2008. From 2007-2008, he was with the Institute of Micro Electronics, National Key Laboratory of Micro/Nano Fabrication, Peking University, where his research focused on RF MEMS switches, tunable fil-ters and vacuum packaging.

He is currently a Ph.D. candidate at Purdue University, USA. He is with the School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University. His research interests include microwave/RF power amplifiers (PAs), adaptive PAs and transmitters, co-design of PAs and high-Q cavity filters, and fun-damental failure mechanisms of microwave devices under high-power operation.

Mr. Chen was a recipient of 2012 IEEE MTT-S graduate fellowship. He won the Second- and Third-Place Awards of the High Efficiency Power Amplifier Design Competition in IEEE MTT-S International Microwave Sym-posium (IMS) in 2012 and 2011, respectively.

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