Characteristics of waveguide-dielectric resonator

In this paper the generalised results of an investigation for the WDR with the dielectric element (DE) of thickness h mounted inside the cylindrical evanescent waveguide with a radius a and a short-circuit plunger placed at the arbitrary distance L from the DE are presented. The electromagnetic energy losses in metal parts of the resonator and in the DE volume have been neglected. The electrodynamic problem was solved with partial regions method. The resonance structure was divided into three regions: the first region is a piece of a hollow waveguide up to the DE; the second region is a part of a waveguide with the DE and the third region is a piece of a hollow waveguide with the short-circuit plunger. The case was considered for which the sections of a hollow waveguide were below cut-off for the resonance type of oscillation and in the waveguide section filled with dielectric where the resonating wave propagated