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PIER PIER B PIER C PIER M PIER Letters
2007-01-11
An Efficient Algorithm for EM Scattering by Electrically Large Dielectric Objects Using Mr-Qeb Iterative Scheme and Cg-FFT Method
By
Lei Zhao,

    Prof. Lei Zhao

    Department of Radio Engineering

    Southeast University

    China

    Homepage

Tie-Jun Cui,

    Professor Tie-Jun Cui

    Department of Radio Engineering

    Southeast University

    China

    Homepage

Wei-Dong Li

    Dr. Wei-Dong Li

    Department of Radio Engineering

    Southeast University

    China

    Homepage

, Vol. 67, 341-355, 2007
doi:10.2528/PIER06121902
Abstract
In this paper, an efficient algorithm is presented to analyze the electromagnetic scattering by electrically large-scale dielectric objects. The algorithm is based on the multi-region and quasiedge buffer (MR-QEB) iterative scheme and the conjugate gradient (CG) method combined with the fast Fourier transform (FFT). This algorithm is done by dividing the computational domain into small sub-regions and then solving the problem in each sub-region with buffer area using the CG-FFT method. Considering the spurious edge effects, local quasi-edge buffer regions are used to suppress these unwanted effects and ensure the stability. With the aid of the CG-FFT method, the proposed algorithm is very efficient, and can solve very largescale problems which cannot be solved using the conventional CG-FFT method in a personal computer. The accuracy and efficiency of the proposed algorithm are verified by comparing numerical results with analytical Mie-series solutions for dielectric spheres.
Citation
Lei Zhao, Tie-Jun Cui, and Wei-Dong Li, "An Efficient Algorithm for EM Scattering by Electrically Large Dielectric Objects Using Mr-Qeb Iterative Scheme and Cg-FFT Method," , Vol. 67, 341-355, 2007.
doi:10.2528/PIER06121902
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