A fast time-domain finite element-boundary integral method for electromagnetic analysis

A time-domain, finite element-boundary integral (FE-BI) method is presented for analyzing electromagnetic (EM) scattering from two-dimensional (2-D) i nhomogeneous objects. The scheme's finite-element component expands transve rse fields in terms of a pair of orthogonal vector basis functions and is c oupled to its boundary integral component in such a way that the resultant finite element mass matrix is diagonal, and more importantly, the method de livers solutions that are free of spurious modes. The boundary integrals ar e computed using the multilevel plane-wave time-domain algorithm to enable the simulation of large-scale scattering phenomena. Numerical results demon strate the capabilities and accuracy of the proposed hybrid scheme.