Fast and accurate analysis and design of substrate integrated waveguide (SIW) filters

Abstract

This paper describes the application of the Boundary Integral-Resonant Mode Expansion (BI-RME) method to the accurate modelling of Substrate Integrated Waveguides (SIW). The new formulation fully exploits the particular geometry of this class of structures, thus providing a very efficient analysis method to be used within CAD tools of SIW filters. The advantages of this method have been proved with the successful design of two filters operating in the microwave and millimeter-wave bands.