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A fast higher-order time-domain finite element-boundary integral method for 3-D electromagnetic scattering analysis

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5 Author(s)
Dan Jiao ; Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA ; Ergin, A.A. ; Shanker, B. ; Michielssen, E.
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A novel hybrid time-domain finite element-boundary integral method for analyzing three-dimensional (3-D) electromagnetic scattering phenomena is presented. The method couples finite element and boundary integral field representations in a way that results in a sparse system matrix and solutions that are devoid of spurious modes. To accurately represent the unknown fields, the scheme employs higher-order vector basis functions defined on curvilinear tetrahedral elements. To handle problems involving electrically large objects, the multilevel plane-wave time-domain algorithm is used to accelerate the evaluation of the boundary integrals. Numerical results demonstrate the accuracy and versatility of the proposed scheme.

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Antennas and Propagation, IEEE Transactions on  (Volume:50 ,  Issue: 9 )