Title :
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
fDate :
7/1/1996 12:00:00 AM
Abstract :
A new artificial material absorber for truncating finite element meshes is investigated. The interface of the absorber is made reflectionless by choosing εr 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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
