A Novel Mode-Matching Formulation of Multifurcated Waveguide Junctions

In this paper, we present a mode-matching-based formulation for the electromagnetic analysis of multifurcated waveguide problems, that is, junction number input waveguides with an output region larger cross-section area. A generalized scattering matrix (GSM) representation is obtained relating forward and backward modal field amplitudes in each terms coupling integrals representing conservation reaction fields. Numerical results several coaxial devices are provided to validate formulation. Comparisons against finite-element method demonstrate approach can accurately model problems. The introduced here provides useful formulas allow us multi-port by reusing well-known two-port