Eigen modes in electrodynamic system round – rectangular waveguides with dielectric

Abstract

A three-dimensional electrodynamic model of hybrid electromagnetic modes in waveguide junction “cylindrical – rectangular waveguides”, filled by dielectric has been created. The classification of eigenmode types have been carried out: eigen resonances of a junction on evanescent waves and resonances of a waveguide-dielectric type. The structure under investigation can be used in measuring the electrical parameters of dielectric samples of both cylindrical and rectangular cross sections. As the spectral characteristics of a junction are defined, basically, by the size of a central coupling region of waveguides and electrical parameters of that part of dielectric which is there, the measurements are local.