Preconditioning Techniques for Modeling the Scattering Problem by Hybrid FEM-MoM Method

Complex linear systems will be generated when scattering problems are simulated by hybrid FEM-MoM methods, such complex linear systems are difficult to solve with iterative methods alone, so preconditioning technique is usually applied to accelerate the convergence rate of iterative methods. For such complex linear systems, several preconditioners are proposed in this paper. Numerical results show the effectiveness of the proposed preconditioning technique.