Análisis eficiente de dispositivos complejos en microondas usando BI-RME y Nyström

Abstract

This work presents the complete characterization of complex passive microwave devices in waveguide technology for linear, circular and elliptical geometries. The analysis is based on an Integral Equation (IE) technique that provides a very efficient characterization of discontinuities between waveguides with an arbitrary cross-section. The modal analysis of such waveguides is based on a modified version of the well-known Boundary Integral - Resonant Mode Expansion (BI-RME) method using the Nyström approach, instead of using the traditional Galerkin version of the Method of Moments (MoM), thus providing significant savings on computational costs. Previous results concerning this Nyström BI-RME approach only compared the loss of accuracy in computing the modal spectrum. In this work, new comparative benchmarks between the results provided by the new technique and the original BI-RME approach are successfully presented for a selected choice of real complex passive microwave devices.