Analysis of stripline T-junction with rectangular cut based on eigenmode expansion method and Foster-type equivalent network

Abstract

A stripline T-junction with a rectangular cut at the symmetric center is analyzed based on a two dimensional (2-D) planar circuit model, mode theory and the derived Foster-type equivalent network. Wide-band frequency characteristics are calculated with cut-size as a parameter, which leads to a discussion about transmission vs bandwidth characteristics, the realized limit of characteristics and determination of the optimum cut.