A fast and robust hybrid solver for realistic electromagnetic problems

This paper presents a domain decomposition based hybrid finite element boundary integral method for solving electromagnetic radiation and scattering problems. The method employs a second order Robin's transmission condition to unite the finite element method and boundary element method at the truncation surface, leading to rapid convergence of domain decomposition iterations. Furthermore, the method provides a systematic approach to hybridize various electromagnetic solvers into one powerful hybrid solver. In this work, we have combined finite element method, method of moments, and asymptotic high frequency methods such as physical optics and shooting and bouncing rays. A one-way domain decomposition method will also be presented to provide an alternative fast and efficient solution.