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In this paper, an improved Calderon preconditioner for electric field integral equation (EFIE) with the adaptive cross approximation (ACA) algorithm is presented. The preconditioning technique based on Calderon formulas is aimed at stabilizing EFIE. A new preconditioning technique by using Buffa-Christiansen (BC) basis has been introduced in literatures recently. Because a dual refined mesh must be...
The electric field integral equation (EFIE) has been widely used in the moment method (MoM) solution of electromagnetic problems. However, due to the spectrum property of the EFIE operator, the resulting MoM impedance matrix has eigenvalues clustered around the origin and at the infinity as the mesh density increases, leading to a dramatic increase of the matrix condition number. When the object is...
In this paper, MLFMA is implemented in the IEFIE to compute scattering from complex conducting structure coated by thin dielectric material. Numerical results demonstrate the efficiency and validity of the present method.
To further expedite solution of electromagnetic scattering from conducting structures with slots, a novel improved electric field integral equation (IEFIE) is developed to reduce the iteration time in multilevel fast multipole algorithm (MLFMA). By adding the principal value term of magnetic field integral equation (MFIE) operator on the both sides of the EFIE operator, a well-conditioned improved...
In this paper, a novel improved electric field integral equation (IEFIE) is developed to achieve fast and accurate solution of electromagnetic scattering from 3-D conducting structures. By adding the principle value term of the magnetic field integral equation (MFIE) operator into the EFIE operator, a well-conditioned improved EFIE operator is constructed. To achieve a reasonable accuracy, several...
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