Dyadic Green's Function of Multilayer Cylindrical Closed and Sector Structures for Waveguide, Microstrip Antenna and Network Analysis

Abstract

A clear and systematic method to derive the spectral and space domain dyadic Green's function of arbitrary cylindrical multilayer and multiconductor structures is proposed. The derivation is either done for a circumferentially closed or a cylindrical sector structure, which is bounded by electric or magnetic walls in azimuthal direction. The solution for the dyadic Green's function in spectral domain is obtained via an equivalent circuit. Relations between spectral and space domain for the dyadic Green's functions are derived using eigensolution expansions. Finally, the dyadic Green's function is applied to the problem of finding the propagation constants of the two layer dielectric rod.