Title :
Effect of the conductivity profile on the stability of the ADI-FDTD method with split-field PML
Author :
Hwang, Jiunn-Nan ; Chen, Fu-Chiarng
Author_Institution :
Nat. Chiao Tung Univ., Hsinchu
Abstract :
In this paper, the stability of the alternating direction implicit finite-difference time-domain (ADI-FDTD) method with split-field perfect matched layer (PML) is studied. From the theoretical stability analysis, it is found that the ADI-FDTD method with split-field PML will be unstable in the PML surface and inside the PML regions. The modified PML conductivity profiles are proposed to prevent the instabilities inside the PML regions. The effect of the PML conductivity profile on the stability of this scheme and the numerical performance of the PML are investigated. The theoretical results are validated by means of actual numerical simulation.
Keywords :
computational electromagnetics; ADI-FDTD method; PML conductivity profile; alternating direction implicit finite-difference time-domain method; conductivity profile effect; numerical simulation; perfect matched layer; stability analysis; Boundary conditions; Conductivity; Electronic mail; Finite difference methods; Microwave communication; Microwave theory and techniques; Numerical simulation; Stability analysis; Time domain analysis; Alternating direction implicit finite-difference time-domain (ADI-FDTD); PML; conductivity profile; stability;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429568
