THE DESIGN OF NONRECIPROCAL WAVE-GUIDE FERRITE DEVICES FOR THE UHF BAND

New achievements in the areas of electrodynamics, construction, technology and the study of materials [1] have recently been used to design nonreciprocal waveguide ferrite devices for the UHF band. It is of particular interest to investigate nonreciprocal ferrite devices in which the height of the ferrite element (resonator) is less than the height of the waveguide. The presence of an air gap between the ferrite and the walls of the waveguide gives rise to a nonuniformity in the field along the axis of the ferrite cylinder, which considerably complicates the electrodynamic analysis of such devices. Only a small number of papers have so far been published in which ferrite-dielectric resonators having a height less than the height of the waveguide are investigated. In this paper we consider the fundamental principles of the design of nonreciprocal waveguide ferrite devices for the UHF band employing such resonators.