3 n-Ports Generalized Scattering Matrix

Abstract—Accurate determination of the generalized scattering matrix of the crossed waveguides junction, T-junction and right-angle bend containing a cylindrical post is presented. The generalized scattering matrix of the four port structure is obtained from those of the two ports right angle bend with different combinations of perfect electric and/or magnetic walls. The generalized scattering matrix of the right angle bend (quarter of the structure) is obtained by the mode matching method where the electromagnetic fields in rectangular waveguides are matched to those in a junction section formed by