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A New SDIE Based on CFIE for Electromagnetic Scattering From IBC Objects
IEEE Transactions on Antennas and Propagation ( IF 4.435 ) Pub Date : 2019-09-16 , DOI: 10.1109/tap.2019.2940609
Hong-Wei Gao; Ming-Lin Yang; Xin-Qing Sheng

This article presents a new self-dual integral equation (SDIE) for electromagnetic scattering from arbitrarily impedance boundary condition (IBC) objects including partly coated objects. The proposed SDIE is constructed by using the combined field integral equation (CFIE) and IBC, shorted as C-SDIE. To overcome the difficulty of discontinuous surface impedance from nonuniform IBC/partly coated objects, the discontinuous Galerkin (DG) method is applied to discretize the C-SDIE. Numerical experiments confirm that the DG-C-SDIE has promising numerical performance in terms of accuracy and efficiency. Furthermore, the domain decomposition preconditioning based on DG is employed to further enhance the proposed DG-C-SDIE for large-scale, multi-scale objects. The numerical results demonstrate the capability of the proposed DG-C-SDIE.
更新日期:2020-01-07

 

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