Explicit formulas for obtaining the radiation characteristics of an antenna based on a three-dimensional metallic photonic bandgap structure

An antenna based on a three-dimensional metallic photonic bandgap (MPBG) st ructure consisting of many parallel metallic short wires is considered. An explicit method is introduced to calculate the radiation pattern for such a n antenna system. The explicit method is verified numerically by comparing the results obtained by the finite-difference time-domain method. The prese nt method improves the computation speed significantly. A generic algorithm is used to make an optimal design for such a 3-D MPBG structure-based ante nna. (C) 2001 John Wiley & Sons, Inc.