Abstract
An algorithm and a program for the calculation of the natural frequencies and fields of irregular waveguides are presented. The algorithm permits calculation of the fields of waveguides with complex cross-sections (L-, H, and E-profiles) and waveguides partially filled with dielectrics having constant electromagnetic characteristics. The method involves replacement of the 2-D electrodynamic problem by a discrete mathematical model, which can be interpreted as a system of electrically coupled circuits. Analyzing the behavior of the currents in a discrete model by electrical engineering methods, we obtain an approximate solution of the reference electrodynamic problem. Numerical calculation results and errors are given.
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