基于准分形频率选择表面的天线RCS减缩  

RCS Reduction of Antenna Based on Quasi Fractal FSS

作　　者：王文涛[1] 龚书喜[1] 胡楚锋[2] 王兴[1] 凌劲[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,西安710071 [2]西北工业大学无人机特种技术国家重点实验室,西安710072

出　　处：《微波学报》2010年第3期1-5,共5页Journal of Microwaves

基　　金：国家自然科学基金(60801042)

摘　　要：提出一种新型的基于准分形结构的带阻频率选择表面(FSS),并将其作为印刷振子天线的反射板来实现天线雷达散射截面(RCS)的减缩。该FSS将传统六边环形单元的直边以分形的规则进行弯折,以提高空间利用率、减小单元面积。实验表明,所给的FSS表现出良好的带阻特性和斜入射稳定性。将其用做天线反射板,能保证带内辐射性能基本不变而实现带外正向及多个斜角度入射时天线的RCS减缩。This paper proposes a novel bandstop frequency selective surface（FSS） based on quasi fractal structure.And this FSS is used as the reflector of the printed dipole antenna to reduce antenna radar cross section（RCS）.In order to improve the space utilization and reduce the cell size,the given structure can be obtained by bending the edge of the traditional hexagon ring based on the fractal rule.The results show that the proposed FSS has good bandstop characteristic and angle stability.Using this FSS as antenna reflector,the in-band radiation performance is almost the same but the out-band RCS of antenna achieve reduction at several oblique angles and normal incidence.

关 键 词：RCS减缩 频率选择表面 分形结构 

分 类 号：TN974[电子电信—信号与信息处理]