KIN-LU WONG, PhD, is a professor in the Department of Electrical Engineering at National Sun Yat-sen University, Taiwan, and is on the editorial board of IEEE Transactions on Microwave Theory and Techniques and Microwave Optical Technology Letters. He has published more than 210 refereed journal papers, holds 20 patents, and is the author of Design of Nonplanar Microstrip Antennas and Transmission Lines (Wiley).