论文信息 - A new anisotropic perfectly matched layer medium for mesh truncation in finite difference time domain analysis

A new anisotropic perfectly matched layer medium for mesh truncation in finite difference time domain analysis

In this paper an unsplit anisotropic perfectly matched layer (PML) medium, previously utilized in the context of finite element analysis, is implemented in the finite difference time domain (FDTD) algorithm. The FDTD anisotropic PML is easy to implement in the existing FDTD codes, and is well suited for truncating inhomogeneous and layered media without special treatment required in the conventional PML approach. A further advantage of the present approach is improved performance at lower frequencies. The applications of the unsplit anisotropic PML/FDTD method are illustrated by considering the problems of a plane wave propagation and an open microstrip line.

[1] R. Vahldieck,et al. An efficient 2-D FDTD algorithm using real variables (guided wave structure analysis) , 1993, IEEE Microwave and Guided Wave Letters.

[2] D. Katz,et al. Validation and extension to three dimensions of the Berenger PML absorbing boundary condition for FD-TD meshes , 1994, IEEE Microwave and Guided Wave Letters.

[3] Jean-Pierre Berenger,et al. A perfectly matched layer for the absorption of electromagnetic waves , 1994 .

[4] Jin-Fa Lee,et al. A perfectly matched anisotropic absorber for use as an absorbing boundary condition , 1995 .

[5] Raj Mittra,et al. A new look at the perfectly matched layer (PML) concept for the reflectionless absorption of electromagnetic waves , 1995 .

[6] Jiayuan Fang,et al. Generalized perfectly matched layer-an extension of Berenger's perfectly matched layer boundary condition , 1995 .

[7] Raj Mittra,et al. Frequency dependence of the constitutive parameters of causal perfectly matched anisotropic absorbers , 1996 .