A Novel Dipole-Moment Based Hybrid Technique for Numerically Efficient Solution of Multi-Scale Problems

In this paper, we present a novel hybrid technique for efficient solution of multi-scale problems in the time-domain. The proposed technique utilizes a dipole-moment (DM)-based Method of Moments (MoM) type of formulation for arbitrarily shaped objects with fine features. Scattered fields are obtained in closed form, and directly in the time-domain at desired observation points on a planar interface, and are combined with Finite-Difference Time-Domain (FDTD) update equations. The time-domain scattered fields computed by using the MoM type of formulation presented herein is stable in its implementation.