Kazuya Yamamoto received the B.E., M.E., and Ph.D. degrees in electrical engineering from Osaka Prefecture University, Sakai, Japan, in 1988, 1990, and 1998, respectively. Since joining the Optoelectronic and Microwave Devices Laboratory, Mitsubishi Electric Corporation, Itami, Japan, in 1990, he has been engaged in the research and development of GaAs-based analog and digital ICs—PAs, antenna switches, prescalers, and quadrature modulators—for mobile communications. He has also been engaged in the research on circuit design techniques of high-speed analog and digital ICs—preamplifiers, electro-absorption (EA) drivers, and decision circuits—for optical fiber links. He is currently a Head Researcher of the High Frequency Device Department and the Manufacturing Engineering Department, High Frequency and Optical Device Works, Mitsubishi Electric Corporation. He is also a Visiting Lecturer with Osaka Prefecture University, where he holds the Chair of microwave device and circuit engineering for microwave applications. He was an Associate Editor of the IEICE Transaction on Electronics (English version) between 2008 and 2014. He served on the 2014 Asia-Pacific Microwave Conference (APMC) Technical Program Committee. His current research interests include GaN-based power amplifiers, millimeter-wave RFICs, and RFIDs.
Dr. Yamamoto is a senior member of the IEEE and the Institute of Electronics, Information, and Communication Engineers of Japan (IEICE). He currently serves on the IEEE MTT-S, Technical Committee (MTT-7), the International Microwave Symposium (IMS) Technical Paper Review Committee, and the IEEE Compound Semiconductor Integrated Circuits Symposium (CSICS) Technical Program Committee.