NUMERICAL SOLUTION OF SCATTERING FROM THIN DIELECTRIC-COATED CONDUCTORS BASED ON TDS APPROXIMATION AND EM BOUNDARY CONDITIONS
NUMERICAL SOLUTION OF SCATTERING FROM THIN DIELECTRIC-COATED CONDUCTORS BASED ON TDS APPROXIMATION AND EM BOUNDARY CONDITIONS
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DOI：
10.2528/pier09051103
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发表时间：
2009
影响因子：
6.7
通讯作者：
Shiquan He;Z. Nie;Jun Hu
中科院分区：
文献类型：
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作者：
Shiquan He;Z. Nie;Jun Hu
将薄介质片(TDS)近似和电磁(EM)边界条件结合起来，推导出一组积分方程组，作为阻抗边界条件(IBC)方法的替代，用于求解薄介质涂层导体的电磁散射。只需离散导体表面的感应电流，并求解一个类似于理想导体(PEC)的积分方程，即可计算整个涂层系统(电磁材料涂层)的散射场。给出了电磁场积分方程(EFIE)、磁场积分方程(MFIE)及其组合形式。利用Galerkin方法将这些方程转化为矩阵方程，然后用多层快速多极子算法(MLFMA)进行求解，得到这些涂层目标的远场散射。
Thin dielectric sheet (TDS) approximation and electro- magnetic (EM) boundary conditions are considered together to de- rive out a set of integral equations as an alternative to the impedance boundary condition (IBC) method to solve the electromagnetic scat- tering from thin dielectric-coated conductors. Only with discretizing the induce current on the conductor surfaces and solving an integral equation similar to that for a perfect electric conductor (PEC), the scattering flelds from the whole coating system (electric or magnetic material coating) are computed. Both the electric fleld integral equa- tion (EFIE), magnetic fleld integral equation (MFIE) and their combi- nation form are presented. These equations are converted to a matrix equation by Galerkin's method and then solved with multilevel fast multipole algorithm (MLFMA) to obtain the far flelds scattering from these coated objects.