Heung-Gyoon Ryu (M’88) was born in Seoul, Republic of Korea in 1959. He received his B.S., M.S. and Ph.D. degrees in electronic engineering from Seoul National University in February 1982, 1984, and 1989. Since February 1988, he has been with Chungbuk National University, Korea, where he is currently a professor of in the Department of Electronic Engineering in Chungbuk National University. He also worked as chief director of RICIC (research institute of computer, information communication) in Chungbuk National University from March 2002 to February 2004. He received the ‘2002 ACADEMY AWARD’ from the Korea Electromagnetic Engineering Society, Korea. He received the “BEST PAPER AWARD” at the 4th International Conference on Wireless Mobile Communications (ICWMC 2008) Athens, Greece, July 27-Aug.1, 2008. He received the “BEST PAPER AWARD” at the International Conference on Advances in Satellite and Space Communications (SPACOMM 2009), Colmar France, July 20-25, 2009. His research interests include IoT sensor networks, wireless communication systems, signal processing, antenna technology and B5G/6G mobile communication, and ambient communication systems.