Performance of an anisotropic artificial absorber for truncating finite-element meshes

Author

Kingsland, David M. ; Gong, Jian ; Volakis, John L. ; Lee, Jin-Fa

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

44

Issue

7

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

975

Lastpage

982

Abstract

A new artificial material absorber for truncating finite element meshes is investigated. The interface of the absorber is made reflectionless by choosing ε_r and μ₄ to be complex diagonal tensors. With some loss, a metal backed thin absorber layer is then sufficient for terminating the mesh. This scheme is simpler to implement than conventional absorbing boundary conditions and offers the potential for higher accuracy. We investigate the effectiveness of this anisotropic absorber on the basis of results obtained for problems in propagation (waveguide and microstrip line) and scattering

Keywords

electromagnetic wave propagation; electromagnetic wave scattering; finite element analysis; microstrip lines; permeability; permittivity; waveguide theory; EM propagation; EM scattering; absorber interface; absorbing boundary conditions; anisotropic absorber; anisotropic artificial absorber; artificial material absorber; complex diagonal tensors; finite-element meshes truncation; loss; metal backed thin absorber layer; microstrip line; permeability; permittivity; reflectionless absorber interface; waveguide; Anisotropic magnetoresistance; Boundary conditions; Finite difference methods; Finite element methods; Microwave circuits; Partial differential equations; Scattering; Surface waves; Tensile stress; Termination of employment;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.504304

Filename

504304