Analysis of coaxial-feed arbitrary shape thin wire inside the parallel-plate waveguide by using the dyadic Green's functions

An integral equation is formulated for arbitrary shape thin wires inside the parallel-plate waveguide by using dyadic Green's functions. The moment method and the Galerkin procedure are used to obtain numerical solutions of wire admittance and current distribution which are found in good agreement with experimental results and published data. This study is useful for waveguide excitation designs.