Composite Scattering from an Arbitrary Dielectric Target above the Dielectric Rough Surface with FEM/PML
XU Run-Wen** , GUO Li-Xin, FAN Tian-Qi
School of Science, Xidian University, Xi'an 710071
Abstract ：A numerical approach of the finite element method is extended to study the scattering properties of an arbitrary dielectric target above the dielectric rough surface. For scattering in an open region, the artificial boundaries should be introduced to truncate the infinite computational domain. A perfectly matched layer (PML), as the artificial boundary of the finite-element-method (FEM) region, is employed to absorb the outward wave scattered from the model. The strategies of hybrid FEM/PML are presented with their validity evaluated by finite element/boundary integral method (FE/BIM), and then the scattering properties of the dielectric composite problem with different material permittivity are discussed in detail. Compared with the published works about FEM/PML, we extend the FEM/PML into the simulations of a dielectric target above the dielectric rough surface.
收稿日期: 2013-08-19
出版日期: 2013-12-13
:
41.20.-q
(Applied classical electromagnetism)
42.25.Bs
(Wave propagation, transmission and absorption)
42.25.Dd
(Wave propagation in random media)
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