LE-WEI LI, PhD, is Deputy Director of the Antenna and Scattering Laboratory and Electromagnetics Research Group at the National University of Singapore. He is a senior member of the IEEE, an editorial board member of Journal of Electromagnetic Waves and Applications, and the author of Dyadic Green's Functions in Inhomogeneous Media and Electromagnetic Theory of Complex Media. XIAO-KANG KANG, PhD, is a research engineer in the Department of Electrical and Computer Engineering at the National University of Singapore. MOOK-SENG LEONG, PhD, is a professor in the Department of Electrical an...