The generalized scattering matrix of closely spaced strip and slot layers in waveguide

In this paper, a method-of-moments integral-equation formulation of a gener alized scattering matrix (GSM) is presented for the full-wave analysis of i nteractive planar electric and magnetic discontinuities in waveguide. This was developed to efficiently handle a variety of waveguide-based strip-to-s lot transitions, especially on thin substrates. This single matrix formulat ion replaces the problematic procedure of cascading individual GSM's of an electric (strip) layer, a thin substrate, and a magnetic (slot) layer.