| Application of hybrid finite element method/boundary integral method (FEM/BI) to EM scattering problems is studied in this paper. Nodal FEM/BI is employed for two-dimensional problems, and vector FEM/BI for three-dimensional problems. Second-order quadrilateral nodal finite elements and tetrahedral edge finite elements are used for computing scattering from two- and three-dimensional structures, respectively. Schemes on implementing the hybrid method to analyze EM scattering properties of complex objects is discussed, and improvement of the accuracy, efficiency and versatility of the hybrid method is also discussed. An optimum scheme for constructing finite element meshes is proposed, which can reduce the sum of the unknowns. Numerical technique is discussed, and application program is developed for EM scattering problems. Numerical results are in excellent agreement with those presented by other papers or exact solutions. |
PDF Full Text Request