Incorporation of MoM-based waveguide port model into the mixed conducting and dielectric geometry

In this paper, a general waveguide port problem is formulated in the case when the port is connected to arbitrary mixed conducting and dielectric geometry using the combination of equivalence principles for aperture coupling problem and for scattering problem on mixed geometry. The method of moments (MoM) is used to reduce the problem to algebraic equations in terms of both electric and magnetic currents. The obtained approach is verified on practical EMC problems for coaxial ports connected to microwave antenna and printed circuit board (PCB) geometries. A good agreement between the simulated and measured results is demonstrated.