Electromagnetic Scattering Analysis of Arbitrarily Shaped Material Cylinder by FEM-BEM Method

A hybrid method that combines the finite element method (FEM) and the boundary element method (BEM) is developed to analyze electromagnetic scattering from arbitrarily shaped material cylinders. By this method, the material cylinder is first enclosed by a fictitious boundary. Maxwell's equations are then solved by FEM inside and by BEM outside the boundary. Electromagnetic scattering from several arbitrarily shaped material cylinders is computed and compared with results obtained by other numerical techniques. 1. Introduction The problem of electromagnetic scattering determination from an arbitrarily shaped material cylinder is considered in this paper. Electromagnetic scattering from an inhomogeneous material cylinder can be determined by two basic approaches---an integral equation and a differential equation. In the integral equation approach, a surface integral equation or a volume integral equation may be used. In the surface integral equation formulation, conducting surfaces of ..