Title :
3-D Higher-Order ADI-FDTD Method
Author :
Zhang, Yan ; Shan-wei Lu ; Zhang, Jun ; Xue, Ming-hua
Author_Institution :
Sch. of Electron. & Inf. Eng., Beijing Univ. of Aeronaut. & Astronaut., Beijing
Abstract :
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.
Keywords :
finite difference time-domain analysis; mesh generation; 3-D higher-order ADI-FDTD method; alternating-direction implicit finite-difference time-domain method; cavity problems; higher-order spatial difference; mesh resolution; numerical dispersion; Dispersion; Finite difference methods; Maxwell equations; Microwave theory and techniques; Numerical simulation; Research and development; Spatial resolution; Stability criteria; Time domain analysis; ADI- FDTD method; higher-order; numerical dispersion;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554548
