A Fast Computation Method for Solving Scattering from Multilayer Dielectric Structures with Anisotropic Materials

In this paper, we present a fast and accurate method for solving electromagnetic scattering from multilayer dielectric structures with anisotropic materials based on the hybrid finite element method and multilayer surface integral equation (FEM-MSIE). In this method, the multilayer structure domains are first divided into two categories based on whether they can be easily modeled by the SIE. Typical domains that are not easy to be modeled with SIE include antenna arrays, anisotropic honeycomb structures, and so on, which are discretely modeled by the FEM, while the homogeneous or multilayer dielectric domains are modeled by the SIE method. In this way, the modeling domains of the FEM are reduced, thereby improving the modeling efficiency. In order to validate the accuracy and performance of the proposed method, the numerical results are presented and confronted with the results of the hybrid finite element-boundary integral method.