An analysis about the backscattering characteristics of a metamaterial coated magnetodielectric sphere covered with a metasurface has been presented. The effects of various types of metamaterial coatings and surface reactances of lossless metasurface upon the backscattering cross-section of a metamaterial coated magnetodielectric sphere covered with a metasurface have been studied. It is shown that the negligible backscattering cross-section from a double near-zero metamaterial coated magnetodielectric sphere can be enhanced significantly by using specific types of lossless metasurfaces. These types of enhanced backscattering cross-section find applications in the radar detection problems. The proposed theory is also extended to the lossy double negative metamaterial coated magnetodielectric sphere covered with a lossless metasurface. During the study, it is found that for a specific part of the lossy double negative metamaterial bandwidth, two specific types of lossless metasurfaces can be used to reduce the backscattering cross-section as compared to the backscattering cross-section of a lossy double negative metamaterial coated magnetodielectric sphere without metasurface.

中文翻译：

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覆盖有超表面的超材料涂层球体的后向散射截面

已经提出了关于覆盖有超表面的超材料涂层磁电介质球的反向散射特性的分析。研究了各种类型的超材料涂层和无损超表面的表面电抗对覆盖有超表面的超材料涂层磁电介质球的反向散射截面的影响。结果表明，通过使用特定类型的无损超表面，可以显着增强双近零超材料涂层磁电介质球的可忽略的反向散射截面。这些类型的增强后向散射截面在雷达探测问题中得到应用。所提出的理论还扩展到覆盖有无损超表面的有损双负超材料涂层磁电介质球。