Modal analysis of planar elliptical resonator deposited on unshielded dielectric slab

Abstract

Modal analysis of isolated open planar elliptical patch placed on dielectric slab is presented in the paper. It applies concept of Illuminating Modes which is formulated for the case of two-side opened structure. The current on patch is expanded in basis functions in form of Mathieu radial and angular functions. The spectrum of excited modes for exemplary planar resonators is presented and discussed using the concept of power of single current mode and power of total current resulting from plane wave illumination of the structure. The corresponding radiation patterns are also presented and discussed.