Alternative formulation of three dimensional frequency dependent ADI-FDTD method

Fumie Costen; Arnaud Thiry

doi:10.1587/elex.1.528

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Alternative formulation of three dimensional frequency dependent ADI-FDTD method

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Keywords: electromagnetic propagation in dispersive media, FDTD methods, transient propagation, Alternating-Direction Implicit technique, electric flux field source excitation, electric flux field absorbing boundary condition

JOURNAL FREE ACCESS

2004 Volume 1 Issue 17 Pages 528-533

DOI https://doi.org/10.1587/elex.1.528

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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 the method is unaffected by the inclusion of frequency dependency in the model, compared with FD-FDTD.

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