正负介质覆盖下金属柱的电磁散射特性研究  

Electromagnetic scattering characteristics of a conductor cylinder coated with negative and positive materials

作　　者：方谧[1] 孙玉发[1] 赵克明[1] 

机构地区：[1]安徽大学电子信息工程学院,安徽合肥230039

出　　处：《合肥工业大学学报（自然科学版）》2011年第8期1188-1191,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(60771034);安徽高校省级自然科学研究重点资助项目(KJ2010A020)

摘　　要：基于严格的电磁场理论,文章分析了正负双层介质涂覆金属柱的电磁散射特性,并讨论了金属柱包层厚度对远区散射场的影响。通过分析单层正介质和双层介质涂覆下金属柱的电磁散射特性,可知适当选取外层双负介质厚度能有效降低金属柱的后向散射场。Based on the rigorous electromagnetic theory,the electromagnetic scattering characteristics of a conductor cylinder coated with two-layer positive and negative materials is analyzed.The effect of the thickness of each material on the far scattering field is also discussed.By analyzing the electromagnetic scattering characteristics of the conductor cylinder coated with one-layer positive material and two-layer materials,it is concluded that the radar backward cross section can be reduced effectively if the thickness of the double negative material is properly selected.

关 键 词：双负介质 雷达散射截面 导电圆柱 

分 类 号：O441.4[理学—电磁学]