FDTD Analysis of H-Plane Forked T-Junction with Full-Height Ferrite of Arbitrary Shape

An efficient analysis of forked waveguide T-junction with arbitrary full-height ferrite post is presented in the paper. It uses FDTD method that incorporates perfectly matched layer (PML). Several forked T-junction waveguide circulators with or without matching section are studied. Scattering parameters of these structures are obtained. Good agreement is observed between the calculation results and those in the reference.