Alternative formulation of three dimensional frequency dependent ADI-FDTD method

Abstract

An alternative formulation for a frequency dependent (FD)ADI-FDTD method is proposed, based on an electric flux field D tridiagonal matrix rather than an electric field matrix. The procedure for D source excitation is explained. Results show that the accuracy of themethod is unaffected by the inclusion of frequency dependency in the model, compared with FD-FDTD. © 2004, The Institute of Electronics, Information and Communication Engineers. All rights reserved.