Title :
Novel implementation of the CFS-PML and its validation for dispersive media
Author :
Li, Jianxiong ; Yang, Qingxin ; Niu, Pingjuan ; Feng, Naixing
Author_Institution :
Sch. of Electron. & Inf. Eng., Tianjin Polytech. Univ., Tianjin, China
Abstract :
A novel and efficient implementation of the complex frequency shifted perfectly matched layer (CFS-PML) based on the stretched coordinate PML (SC-PML) formulations is proposed for truncating the finite-difference time-domain (FDTD) lattices. For terminating dispersive media, the piecewise-linear recursive convolution (PLRC) is incorporated into the FDTD update scheme. To validate the proposed formulations, a three-dimensional (3D) dispersive half-space problem is simulated. It is shown in the numerical test that the proposed formulations with CFS scheme are efficient in attenuating of low frequency and evanescent waves and reducing late-time reflections.
Keywords :
dispersive media; electromagnetic wave absorption; finite difference time-domain analysis; recursive estimation; 3D dispersive half-space problem; CFS-PML implementation; FDTD lattices; PLRC; SC-PML formulations; complex frequency shifted perfectly matched layer; dispersive media; evanescent wave attenuation; finite-difference time-domain lattices; late-time reflections; piecewise-linear recursive convolution; stretched coordinate PML formulations; three-dimensional dispersive half-space problem; Dispersion; Finite difference methods; Media; Perfectly matched layers; Reflection; Soil; Time domain analysis; dispersive media; finite-difference time-domain (FDTD); perfectly matched layer (PML);
Conference_Titel :
Microwave Technology & Computational Electromagnetics (ICMTCE), 2011 IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8556-7
DOI :
10.1109/ICMTCE.2011.5915549