Dal Ahn received the B.S., M.S., and Ph.D. degrees from Sogang University, Seoul, Korea, in 1984, 1986, and 1990, respectively, all in electronics. From 1990 to 1992, he was with the Mobile Communications Division, Electronics and Telecommunications Research Institute (ETRI), Daejeon, Korea. Since 1992, he has been with the School of Electrical and Electronic Engineering, Soonchunhyang University, Asan, Chungnam, Korea, where he is currently a Professor. He is also currently Chief of the RF and Microwave Component Research Center (RAMREC), Soonchunhyang University. He is also a Technical Consultant for Tel Wave Inc., Suwon, Korea. His current research interests include the design and application of passive and active components at radio and microwave frequencies, design of the RF front-end module for various handset system using low-temperature co-fired ceramic (LTCC) technology, DGS circuit applications, and circuit modeling using a commercial EM analysis program. He is an Editor of the Journal of Korea Electromagnetic Engineering Society. Prof. Ahn is a senior member of the Korea Electromagnetic Engineering Society (KEES). (Based on document published on 8 August 2005).