Finite Element Modeling of Two-Dimensional Electromagnetic Scattering from a Dielectric Cylinder Using Perfectly Matched Layers (PML)
DOI:
https://doi.org/10.65405/wb04m798Keywords:
Finite Element Method (FEM), Perfectly Matched Layer (PML), Radar Cross Section (RCS), Dielectric Cylinder, TM Polarization, Computational ElectromagneticsAbstract
This paper presents a computational study of two-dimensional electromagnetic scattering from a dielectric cylinder using the Finite Element Method (FEM). The unbounded scattering problem is effectively truncated using an Anisotropic Perfectly Matched Layer (PML) implemented via complex coordinate stretching. We formulate and solve the scalar Helmholtz equation for Transverse Magnetic (TMz) polarization. To validate the accuracy of the proposed solver, the numerical results—specifically the Bistatic Radar Cross Section (RCS)—are compared against the exact analytical Mie series solution. The results demonstrate that the proposed FEM-PML framework successfully captures the scattering characteristics of the dielectric target, exhibiting strong qualitative agreement with the analytical benchmark
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