$Z$ -Transform Implementation of the CFS-PML for Arbitrary Media

Author

Li, Jianxiong ; Dai, Jufeng

Author_Institution

Sch. of Electron. Inf. Eng., Tianjin Univ.

Volume

16

Issue

8

fYear

2006

Firstpage

437

Lastpage

439

Abstract

An efficient implementation of the complex frequency-shifted perfectly matched layer (CFS-PML) based on stretched coordinate PML (SC-PML) formulations and the Z-transform method is presented for truncating the finite-difference time domain (FDTD). This method is completely independent of the material properties of the FDTD computational domain and hence can be applied to the modeling of arbitrary media without any modification. A numerical test has been carried out in three dimensions to validate these formulations. It is shown that the proposed formulations with a CFS scheme are efficient in attenuating evanescent waves and reducing late-time reflections

Keywords

Z transforms; electromagnetic wave absorption; finite difference time-domain analysis; Z-transform; arbitrary media; complex frequency-shifted perfectly matched layer; evanescent wave attenuation; finite-difference time domain; late-time reflections; stretched coordinate PML; Finite difference methods; Frequency; Helium; Lattices; Magnetic flux density; Material properties; Perfectly matched layers; Reflection; Testing; Time domain analysis; Finite-difference time domain (FDTD); perfectly matched layer (PML);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2006.879493

Filename

1661636