Chao-Hsing HSU received the M.S. and Ph.D. degrees in Electrical Engineering from the Department of Electrical and Computer Engineering at Florida International University, U.S.A.. He had taken the position of chairperson in the Department of Electronic Engineering, Chien Kuo Institute of Technology, Taiwan, where he established the optimization technique laboratory. His current position is a professor in Department of Computer and Communication Engineering, Chienkuo Technology University. His research is in the optimization research of adaptive antenna and smart antenna. He has also held positions of a project leader and a consultant in the electronic technology industry. His technical interests include antenna design, smart antenna system development, and electromagnetic wave interaction with human bodies. He is a member of the IEEE Communication Society and also a member of the IEICE Communication Society.