FE‐DD based permittivity tolerance analysis in microwave waveguide filters

The paper's aim is to devise a fast method for microwave waveguide filter permittivity tolerance analysis.

A 2D finite elements (FEs) formulation is combined via a Schur complement‐based domain decomposition (DD) technique to reduce the tolerance affected part of the analysis to a smaller domain.

The paper shows how to combine FEs and DD in an efficient way for material parameters tolerance analyses in microwave waveguide filters, showing speedup results.

The formulation here presented is 2D but can be easily extended to 3D.

The application of DD to solve numerically large problem is well‐known, the idea and organization of the algorithm to allow iteration on parameter values on a single sub‐domain is here proposed.