Mixed circuit/electromagnetic analysis of field coupling to high speed interconnects in inhomogenous medium

An efficient method is presented for rigorous analysis of incident field coupling to high speed interconnects. The method is based on generating time domain equivalent sources from incoming fields through finite difference time domain analysis (FDTD) and incorporating them with a circuit level simulator such as SPICE. With this approach, it is possible to perform a circuit analysis of arbitrarily shaped structures which are exposed to external fields. Moreover, the proposed method overcomes the numerical stability problems of FDTD when coupled with nonlinear terminations.