Reduced-order models in the finite element analysis

A novel technique of incorporating macromodels into finite element electromagnetic analysis of waveguide components is presented. Macromodels are generated by using a model order reduction algorithm (ENOR), which results in significant decrease of the number of variables, that describe the computational region. Proposed technique allows for using a few independent macromodels as well as to duplicating one macromodel in many subregions of analysed structure. Reduction of the numerical costs is obtained without sacrificing solution accuracy. Furthermore, proposed approach leads to reduction of the overall simulation time.