A highly robust and versatile finite element-boundary integral hybrid code for scattering by BOR objects

In this paper, we present such a simulation technique that combines the finite element and boundary integral (FE-BI) methods but with a significant improvement and expansion in its capability. This technique correctly models the boundary conditions along the axis of revolution in both the finite element and boundary integral formulations and yields highly accurate solutions. Because of the decoupled computations for the finite element and boundary integral equations, the technique is very efficient as compared to the MoM, especially for BORs comprising layered or inhomogeneous materials.