一种加载超材料吸波体的新型二面角反射器的设计  

A Design of A New Dihedral Corner Reflector Loaded with Meta-material Absorbing Layer

作　　者：祝寄徐[1] 裴志斌[1] 屈绍波[1] 谢明达[1] 

机构地区：[1]空军工程大学理学院,陕西西安710051

出　　处：《空军工程大学学报（自然科学版）》2013年第6期85-88,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(11204378;11274389);陕西省自然科学基金资助项目(2011JQ8031)

摘　　要：针对传统角反射器的性能强烈依赖于入射波长、难以对抗变频雷达的探测这一问题,设计了一种加载超材料吸波体的新型角反射器,在8 GHz、11.5 GHz 以及12 GHz 这3个频点,产生近似相同的后向雷达散射截面,并对该角反射器的性能进行测试验证,结果表明：加载超材料吸波体后,在11.5 GHz 频点,其中心 RCS 值下降约2 dBsm；在12 GHz 频点,其中心 RCS 值下降约3.6 dBsm,在8 GHz 频点,其 RCS 值与普通角反射器一致,两者的 RCS 曲线无明显差别。该新型角反射器性能满足设计要求,为有效对抗 X 波段（8~12 GHz）变频雷达对角反射器假目标的探测与识别尝试了新的途径。In view of the problem that the performance of the traditional corner reflector is strongly depend-ent on the incident wavelength which makes it difficult to avoid the detection of frequency conversion ra-dar,this paper designs a new corner reflector loaded with meta-material wave-absorbing layer,which cre-ates approximately the same backward radar cross sections respectively at frequency points of 8 GHz , 1 1.5 GHz and 12 GHz.The test on the performance of the corner reflector shows that after the loading meta-materials absorbing layer is processed,the RCS value is decreased by about 2 dBsm at 1 1.5 GHz and decreased by about 3.6 dBsm at 12 GHz,and its RCS curve and the value of the common corner reflector are almost the same at 8 GHz.With no significant difference between the RCS curves of two frequency points,the performance of the new corner reflector meets the design requirements,thus providing a new approach for the countermeasure against the detection and identification of frequency conversion radar which works at the X band wave （8~12 GHz）to the corner reflector false target.

关 键 词：角反射器 超材料 吸波 雷达散射截面 

分 类 号：TN011[电子电信—物理电子学]