Electromagnetic Field Analysis by Boundary Element Method Using Spatial Eigenmodes

Abstract

In this paper, a boundary element method using spatial eigenmodes for electromagnetic field analysis is proposed. Mapping the computation model with rotational symmetries, reflective symmetries or rotational symmetries including reflective symmetries to a group of spatial eigenmodes, the equivalent reduced models are obtained. In the method, the applicability becomes wide because arbitrary external source terms can be chosen. Furthermore, in a model including asymmetry regions, a new method, which can save the merit of the symmetries, is proposed. Finally, the validity of the proposed method is proved by numerical simulations.