E-P-AMCBFM分析介质与PEC混合体的电磁散射

E-P-AMCBFM for Analysis of Electromagnetic Scattering by Hybrid Dielectric and PEC Objects

使用基于表面积分方程的矩量法来分析介质与理想导体混合体的电磁散射是计算电磁学的一大热点。对理想导体目标体表面建立电场积分方程,在介质目标体表面建立PMCHW方程组,与基于矩阵分块技术的自适应修正特征基函数法结合,对介质涂敷理想导体目标体的电磁散射进行分析,将其称之为EFIE-PMCHW-AMCBFM(E-P-AMCBFM)。并讨论不同参数如基函数阶数,矩阵块间重叠区域等对计算效率的影响,数值结果表明E-P-AMCBFM对于处理介质-理想导体混合体的电磁散射问题具有较高的精度和效率。

In computational electromagnetic field, the moment method based on surface integral equations for analysis of electro-magnetic scattering by 3-D homogenous dielectric and PEC objects is a hot topic all through. In this paper, the EFIE integral equation is built on the surface and PMCHW integral equations is constructed based on the surface of homogenous dielectric object. Combined with adaptively modified characteristic basis function method （AMCBFM） that is based on dividing the object geometry into distinct blocks, a hybrid method called E-P-AMCBFM is proposed to solve the electromagnetic scattering caused by 3-D homogenous dielectric and PEC objects. Some parameters such as the level of characteristic basis function and the overlapping domain effecting on the results are discussed. The results show that E-P-AMCBFM is highly efficient in solving the electromagnetic scattering problems.