The Waveguide H ‐plane Tee Junction Circulator Using a Composite Gyromagnetic Resonator

Abstract

The waveguide tee junction differs from its wye counterpart in that its scattering matrix contains four instead of two parameters. Its symmetry may be recovered by either introducing a septum or a dielectric post along its symmetry plane. This chapter develops this problem as a preamble to constructing the two circulation conditions of the device. The eigenvalue problem of the H ‐plane tee junction is complicated because two if its three eigenvectors are not unique. The main task of the chapter is to construct the eigenvalue diagram of the H ‐plane tee junction at the Dicke plane. The chapter summarizes the boundary conditions of the electrically symmetric H ‐plane tee junction proposed by Altman. The waveguide tee junction has a symmetry plane across its side waveguide. It may be loaded with either a septum or a dielectric post resonator in order to recover the electrical symmetry of a wye junction.