EM modelling of periodic structures using green's functions

Abstract

In this thesis, a full wave method is used to model three useful periodic structures, combining with periodic Greena??s functions and cavity Greena??s functions. An entire-domain Galerkina??s technique is employed to discretize the integral equations of boundary conditions. These periodic structures include a thick perforated plate, an infinite probe-excited cavity-backed aperture array, and an infinite planar dipole array on a ground plane with periodically arranged concave rectangular cavities. Numerical results are obtained and compared by measured results or calculated results by other accurate methods in previous literatures. The properties of these periodic structures are discussed. Additionally, the mutual coupling between two suspended plate antennas with an inclined ground plane is studied.