Jung Han Choi holds a BS and MS from the Sogang University, Seoul, Korea, and Dr.-Ing from the Technische Universität München, Germany. He currently works on high-data-bit-rate transmitter and receiver circuits, active/passive device modeling, and network analyzer measurement at the Fraunhofer Heinrich-Hertz Institute, Berlin, Germany. He previously served as a research scientist in the Institute for High-Frequency Engineering at the Technische Universität München, and was with the Samsung Advanced Institute of Technology and the Samsung Digital Media and Communication Research Center. In 2003, he received the EEEfCOM Innovation Prize for his contribution to the development of a high-speed receiver circuit.