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General formulation of unconditionally stable ADI-FDTD method in linear dispersive media

journal contribution
posted on 2023-10-12, 06:10 authored by Dong, X.T., Neelakantam V VenkatarayaluNeelakantam V Venkatarayalu, Guo, B., Yin, W.Y., Gan, Y.B.

The unconditionally stable alternating-direction-implicit-finite-difference time-domain (ADI-FDTD) method is used to model wave propagation in dispersive media. A formulation is presented by introducing the Z-transform method into the ADI-FDTD scheme to handle the frequency-dependent features of the media. This formulation is applicable to arbitrary dispersive media, and can be easily coded. Numerical results are compared to those based on the conventional FDTD method to show the efficiency of the proposed method.

History

Journal/Conference/Book title

IEEE Transactions on Microwave Theory and Techniques

Publication date

2004-01-01

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