Slotline-Microstrip Transition on Iso/Anisotropic Substrate : Broadband Design

Abstract

The two-stub transition design is analysed on isotropic and anisotropic substrates. Broadband design is made by optimizing the slotline and the stub lengths. Sensibility analysis of the behaviour of the whole structure with these parameters shows the slotline length and impedance to be the dominant factors. An extended-octave design can easily be achieved, with VWSR less than 1.5, for double-transitions.