Higher Order FEM-MoM Domain Decomposition for 3-D Electromagnetic Analysis

A novel higher order domain decomposition (DD) method based on a hybridization of the finite element method (FEM) and method of moments (MoM) is proposed for three-dimensional (3-D) modeling of antennas and scatterers. The method implements multiple FEM domains within a global unbounded MoM environment, based on the surface equivalence theorem. The presented analyses of 3-D and two-dimensional (2-D) finite periodic arrays of inhomogeneous dielectric scatterers demonstrate excellent accuracy, convergence, and efficiency of the new FEM-MoM-DD technique, and a substantial reduction in the memory requirements and computational time when compared to the higher order MoM solution.