Single-Mode and Multimode Operation of the Rectangular Waveguide with a Spherical Ferrite Probe

Abstract

The paper presents results of mathematical modeling of transmission and reflection coefficients of a rectangular waveguide with a ferrite probe for selective microwave wattmeters of multimode power. The mathematical modeling was performed for the case of three lower wave types propagating at the multimode operation of the rectangular waveguide in a frequency range of 10–16 GHz. The general equations of transmission and reflection coefficients are given. Change in the radius of the spherical ferrite probe was established not to cause changes in the reflection coefficient depending on the position of this ferrite probe in the waveguide. Only the numerical values of the curve peaks on the graph change. The larger is the radius, the greater are the reflection coefficients. The dependence of the transfer and reflection coefficients on different values of the resonance curve half-width was also investigated. The transmittance was shown to depend weakly on the constant magnetization.