Received a B.S. degree in radio engineering, a M.S. degree in electromagnetic fields and microwave technology, and a Ph.D. degree in communications and information systems engineering from the Harbin Institute of Technology, Harbin, China in 1977, 1988, and 1999, respectively. From 1998 to 1999, he was a Visiting Professor at Seoul National University, Seoul, Korea. From 1999 to 2000, he was a Visiting Professor at the Pohang University of Science and Technology. Since 1990, he has been with the Department of Electronics and Communication Engineering, Harbin Institute of Technology, Harbin, China, where he is currently a professor. His current research interests mainly involve microwave active circuits, electromagnetic compatibility, monolithic microwave integrated circuits (MMICs), and millimeter-wave micro electromechanical systems (MEMS) devices.