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 boards of IEEE Transactions on Microwave Theory and Techniques and Microwave and Optical Technology Letters. Professor Wong has published more than 260 refereed journal papers, holds thirty-six patents, and is the author of Design of Nonplanar Microstrip Antennas and Transmission Lines and Compact and Broadband Microstrip Antennas (both from Wiley).