Dr. C. K. Lee received the BEng and Ph.D. Degrees in electronic engineering from the City University of Hong Kong, Kowloon, Hong Kong, in 1999 and 2004, respectively. He was a Post-doctoral Research Fellow in the Power and Energy Research Centre at the National University of Ireland, Galway from 2004 to 2005. In 2006, he joined the Centre of Power Electronics in City University of Hong Kong as a research fellow. Presently, he is a Lecturer of Electrical Engineering Department at the Hong Kong Polytechnic University. His current research interests include advanced inverter, active power filters, planar electromagnetics and ultra-high frequency converters.