多层各向异性等离子体球电磁散射的解析解

The Analytical Solution of Electromagnetic Scattering by Multilayered Plasma Anisotrojpic Spheres

给出s层各向异性等离子体球电磁场球矢量波函数解析表达式,应用电磁场在(s-1)层球壳边界上切向电磁场连续以及辐射条件,导出了平面波入射情况下,s层等离子体球电磁场的展开系数。将数值计算结果分别与矩量法-共扼梯度-傅里叶变换(MOM-CG-FFT)计算结果和均匀等离子体球的结果进行了比较,符合得较好。该文研究结果预期可应用于新型天线的研制和卫星通信等领域。

The analytical solution of spherical vector wave functions of electromagnetic fields in s-concentric homogeneous plasma anisotropic spheres is expanded in this paper. Applying the continuous boundary conditions of electromagnetic fields in (s-1) plasma anisotropic spherical shell's surfaces, the unknown expansion coefficients in homogeneous s-concentric spheres and the scattering field in free space by a plane wave are derived. The numerical results are consistent by the presented method and Method of Moments (MOM) speeded up with the Conjugate-Gradient Fast-Fourier-Transform (CG-FFT) approach. A three-layer concentric plasma anisotropic spheres (the three permittivity tensors are similar) is calculated also, which conforms with the published results of the homogeneous plasma sphere. The findings presented in this paper may be applied in manufacture of new antenna, satellite communication, and other related areas.