A comparison of the Berenger perfectly matched layer and the Lindman higher-order ABC´s for the FDTD method

Author

Andrew, William V. ; Balanis, Constantine A. ; Tirkas, Panayiotis A.

Author_Institution

Telecommun. Res. Center, Arizona State Univ., Tempe, AZ, USA

Volume

5

Issue

6

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

192

Lastpage

194

Abstract

Higher-order absorbing boundary conditions are compared to the recently introduced Berenger perfectly matched layer (PML) absorbing boundary conditions (ABC). Reflections caused by the ABC´s are examined in both the time and frequency domains for the case of a line source radiating in a finite computational domain. It is shown that the PML ABC significantly reduces reflections from the truncation of the computational grid when compared to 7th order Lindman ABC´s. Also, except for at low frequencies, higher-order absorbing boundary conditions are no better than 2nd order Mur absorbing boundaries

Keywords

boundary-value problems; electromagnetic wave propagation; electromagnetic wave scattering; finite difference time-domain analysis; Berenger perfectly matched layer; FDTD method; Lindman higher-order ABC; absorbing boundary conditions; computational grid; line source radiation; Chebyshev approximation; Dielectric losses; Dielectric materials; Difference equations; Electromagnetic scattering; Finite difference methods; Least squares approximation; Partial differential equations; Perfectly matched layers; Time domain analysis;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.386128

Filename

386128