Fast SSED-MoM/FEM Analysis for Electromagnetic Scattering of Large-Scale Periodic Dielectric Structures |
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Authors: | He Xiaomiang Liu then Yang Yang |
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Institution: | College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P.R. China |
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Abstract: | A hybrid method combining simplified sub-entire domain basis function method of moment with finite element method( SSED-MoM /FEM) is accelerated for electromagnetic( EM) scattering analysis of large-scale periodic structures.The unknowns are reduced sharply with non-uniform mesh in FEM. The computational complexity of the hybrid method is dramatically declined by applying conjugate gradient-fast Fourier transform( CG-FFT) to the integral equations of both electric field and magnetic field. The efficiency is further improved by using OpenMP technique. Numerical results demonstrate that the SSED-MoM /FEM method can be accelerated for more than three thousand times with large-scale periodic structures. |
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