Time domain augmented EFIE based on numerical convolution technique

In this paper, a time-domain augmented electric field integral equation (TD-AEFIE) is presented based on numerical convolution technique. To improve the late time stability, the numerical convolution method is implemented and further developed in AEFIE for solving low-frequency problems. In comparison with traditional methods, the presented method with the 1st-order temporal basis function achieves high precision and fast convergence. Numerical results for the transient scattering problems demonstrate the stability and accuracy of the proposed method.