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A comparison of anisotropic PML to Berenger's PML and its application to the finite-element method for EM scattering

1997; IEEE Antennas & Propagation Society; Volume: 45; Issue: 1 Linguagem: Inglês

10.1109/8.554239

1558-2221

Jo-Yu Wu, D.M. Kingsland, J.-F. Lee, R. Lee,

Numerical methods in engineering

The use of an anisotropic material for the boundary truncation of the finite-element method is considered. The anisotropic material properties can be chosen such that a plane-wave incident from free space into the anisotropic halfspace has no reflection. Because there is no reflection, the material is referred to as a perfectly matched layer (PML). The relationship between the anisotropic PML and the original PML proposed by Berenger (see J. Comp. Phys., vol.114, p.185-200, October 1994) is considered. The anisotropic PML is applied to the finite-element solution of electromagnetic (EM) scattering from three-dimensional (3-D) objects. Numerical results are presented to demonstrate the accuracy of the PML.