Modeling of waveguide circuits based on generalized transmission line equations and impedance/admittance transformation concept

Abstract

Algorithms for the modeling of waveguide circuits are described. The material parameters can be anisotropic. Starting with generalized transmission line equations, suitable expressions for the analysis are derived. The introduction of the admittance/impedance transformation concept guarantees numerical stable expressions even in case of long devices or high numbers of concatenated sections. The presented algorithm is validated by comparing numerical results with those obtained by measurement and other numerical methods.