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3-D Higher-Order ADI-FDTD Method

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4 Author(s)
Yan Zhang ; Sch. of Electron. & Inf. Eng., Beijing Univ. of Aeronaut. & Astronaut., Beijing ; Shan-wei Lu ; Jun Zhang ; Ming-hua Xue

In this paper, attention was focused on the 3-D higher- order alternating-direction implicit finite-difference time-domain (ADI-FDTD) method using the higher-order spatial difference. Firstly, the numerical formulation is presented. Secondly, the numerical dispersion relation is obtained analytically. And then the numerical dispersion is investigated as a function of the mesh resolution and the time step. Finally, three kinds of cavity problems are simulated as numerical examples. It is found that the higher-order ADI-FDTD method is more accurate than the conventional ADI-FDTD method. In addition, the proposed method does not encounter stable problem.

Published in:

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Date of Conference:

11-14 Dec. 2007