A generalized scattering matrix method using the method of moments for electromagnetic analysis of multilayered structures in waveguide

The method of moments (MoM) in conjunction with the generalized scattering matrix (GSM) approach is proposed to analyze transverse multilayered struct ures in a metal waveguide. The formulation incorporates ports as an integra l part of the GSM formulation, thus, the resulting model can be integrated with circuit analysis. The proposed technique permits the modeling of inter active discontinuities due to the consideration of a large number of modes in the cascade. The GSM-MoM method can be successfully applied to the inves tigation of a variety of shielded multilayered structures, iris coupled fil ters, determining the input impedance of probe excited waveguides, and of w aveguide-based spatial power combiners.