FDTD and wave matrix simulation of adjustable DBS-band waveguide polarizer

This article presents the results of numerical simulation and optimization of electromagnetic characteristics of a new waveguide polarizer design containing a conducting diaphragm and pins. The theoretical model of a waveguide polarizer with one diaphragm and four pins is developed and applied for the optimization. The main electromagnetic characteristics of the polarizer were obtained based on the elements of general scattering matrix of the designed device. In order to check the performance of the developed mathematical model it was simulated in a software using the finite difference time domain (FDTD) technique. The proposed design of a waveguide polarizer has the ability of fine tuning of its characteristics by mechanical change of the heights of applied pins. Developed theoretical approach and obtained numerical results can be used to develop new tunable waveguide polarizers and filters with diaphragms and pins.

Automated summary

This article presents the results of numerical simulation and optimization of a new waveguide polarizer design containing a conducting diaphragm and pins. The theoretical model developed for a waveguide polarizer with one diaphragm and four pins was applied for optimization, with main electromagnetic characteristics obtained based on the general scattering matrix. The proposed design allows fine tuning of characteristics through mechanical changes in pin heights, and the developed theoretical approach can be used for new tunable waveguide polarizers and filters.