Generalized BI-RME Method Applied to the Analysis of Dielectric-Loaded Waveguide Components
2018
This paper presents the application of the generalized boundary integral-resonant mode expansion (BI-RME) method to the analysis of piecewise homogeneous waveguide components. The component is initially segmented into homogeneous building blocks, and for each block the generalized admittance matrix (GAM) is calculated in the typical BI-RME pole-expansion form. The terms of the pole-expansion are obtained by solving an integral equation obtained enforcing the perfect electric wall boundary condition to the electromagnetic field. Finally, by cascading the GAMs of the blocks the overall frequency response of the component is obtained. Thanks to the use of the RWG basis functions to represent the unknown electric and magnetic surface currents the method is particularly flexible. Its effectiveness is demonstrated through the analysis of two different components.
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