Analysis of scattering from penetrable objects by time domain non-conformal volume integral equation

A marching-on-in-time (MOT) based volume integral equation (VIE) for electromagnetic scattering from inhomogeneous penetrable objects is presented. The requirement of conformal mesh is dispensable, since the use of the gradient-gradient operator, like the counterpart of frequency domain. Numerical results are given to demonstrate the accuracy of the proposed algorithm.