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首页> 外文期刊>Antennas and Propagation, IEEE Transactions on >EM Scattering From Cylindrical Structures Coated by Materials With Inhomogeneity in Both Radial and Azimuthal Directions
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EM Scattering From Cylindrical Structures Coated by Materials With Inhomogeneity in Both Radial and Azimuthal Directions

机译：径向和方位角均不均匀的材料包覆的圆柱结构的EM散射

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摘要

Consider a cylindrical structure with an arbitrary core coated by layers with inhomogeneity in both radial and azimuthal directions in the most general case. The core of the structure may be PEC, PMC, PEMC, impedance surface, dielectric, or metamaterial and an electromagnetic (EM) wave with arbitrary polarization is obliquely incident on the structure. In this paper, EM scattering from such a structure is analyzed, for the first time, through a general method in the frequency domain on the basis of the Taylor series concept. The validity of the proposed method is verified through some comprehensive examples. It is confirmed that the method is simple, fast, and highly reliable. Moreover, it is capable of analyzing the scattering of obliquely incident plane waves for all types of cylindrical cores and lossy inhomogeneous layers with continuous dielectric and magnetic profiles. In the last example, to show the applicability of the proposed method in inverse problems, the method is employed in an optimization procedure to reduce the radar cross section of a PEC cylinder.
机译：在最一般的情况下，考虑一个具有任意芯的圆柱结构，该芯被径向和方位角均不均匀的层覆盖。结构的核心可以是PEC，PMC，PEMC，阻抗表面，电介质或超材料，并且具有任意极化的电磁（EM）波倾斜入射在结构上。在本文中，基于泰勒级数概念，通过频域中的一般方法首次分析了这种结构的电磁散射。通过一些综合实例验证了该方法的有效性。证实了该方法简单，快速且高度可靠。此外，它能够分析所有类型的圆柱芯和具有连续介电和磁分布的有损不均匀层的斜入射平面波的散射。在最后一个示例中，为了显示所提出的方法在反问题中的适用性，在优化过程中采用了该方法来减小PEC圆柱体的雷达横截面。

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