An algorithm for enhancing macromodeling in finite element analysis of waveguide components

An algorithm for enhancing the finite element method with local model order reduction is presented. The proposed technique can be used in fast frequency domain simulation of waveguide components and resonators. The local reduction process applied to cylindrical subregions is preceded by compression of the number of variables on its boundary. As a result, the finite element large system is converted into a very compact set of linear equations which thus can be solved extremely fast.