A Discontinuous Galerkin Time-Domain Integral Equation Method for Electromagnetic Scattering From PEC Objects

A discontinuous Galerkin time-domain integral equation (DG-TDIE) method based on the marching-on-in-time (MOT) scheme is presented to analyze the transient scattering from arbitrarily shaped perfect electrically conducting (PEC) objects. In this paper, the mono-polar Rao-Wilton-Glisson (RWG) functions are chosen as the trial and the test spatial functions, while the triangular basis functions are for the temporal expansion. Therefore, it is flexible and convenient to analyze objects with nonconformal discretization or targets containing more than three surfaces in contact with each other. Numerical results are presented to demonstrate the accuracy and the efficiency of the DG-TDIE method.