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In this paper, a two-level integral equation fast Fourier transform (IE-FFT) algorithm has been proposed to analyze full-wave electromagnetic scattering problems. In two-level IE-FFT algorithm, the problem domain is first partitioned into large cartesian cells. Next, the Green's function between two well-separated cells is approximated by interpolation technique. Different from Lagrange interpolation...
A series of oscillatory radial basis functions (RBFs) with Bessel functions of different orders are compared at different cube lengths. An adaptive choice of the interpolation functions with the best orders is then adopted to enhance the interpolation accuracy when implementing the multilevel Green's function interpolation method (MLGFIM). In order to further improve the interpolation accuracy, a...
A higher-order Nyström scheme is developed for the marching-on-in-degree (MOD) solution of the time-domain magnetic field integral equation (TDMFIE) for the analysis of transient electromagentic scattering from a three-dimensional closed conducting object of arbitrary shape. In this method, the surface of the object is discretized into curvilinear triangular patches and the Lagrange interpolation...
This paper present an efficient technique for the analysis of electromagnetic scattering by a conducting sphere coated with uniaxial anisotropic media. The technique is based on the method of higher order MoM of the surface integral equations. This higher order MoM solution uses the higher order hierarchical basis functions which are based on the modified Legendre polynomials. Numerical examples results...
In this paper, a MoM solution accelerated by the ACA algorithm is presented to analyze electromagnetic wave interactions with complex 3D objects consisting of metallic and uniaxial anisotropic components. The problem has been formulated using the PMCHWT equations for homogeneous anisotropic media and EFIE for conducting surfaces. The ACA algorithm is applied to accelerate the matrixvector multiplication...
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