Title :
Unconditionally stable multidomain pseudospectral time-domain (PSTD) method
Author :
Gang Zhao ; Qing Huo Liu
Author_Institution :
Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA
Abstract :
The pseudospectral time-domain (PSTD) method has shown a marked improvement in accuracy and efficiency over the FDTD method. Nevertheless, it likewise suffers from the CFL stability condition. In this work, based on the concepts of ADI- and SS-FDTD methods, as well as our previously developed 3D PSTD method (G. Zhao et al, IEEE Microwave Wireless Compon. Lett.), we derive the unconditionally stable multidomain PSTD algorithm. We demonstrate that the implicit finite difference scheme can be applied to the PSTD method and make it free of the CFL stability condition.
Keywords :
finite difference methods; numerical stability; time-domain analysis; 3D PSTD method; ADI-FDTD; CFL stability condition; SS-FDTD method; implicit finite difference scheme; multidomain pseudospectral time-domain method; unconditionally stable PSTD method; Circuit simulation; Circuit stability; Computational geometry; Finite difference methods; Frequency selective surfaces; Gold; Maxwell equations; Stability criteria; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1220188
