摘要
介绍了一种极化滤波反射面天线,将天线工程中的周期结构反射面技术应用于解决飞行器天线的RCS问题,采用由金属丝栅网构成的周期结构作为天线主反射面,使其对正交极化的来波具有良好的透射性,从而降低了天线的RCS。给出了此天线辐射方向图和雷达散射截面(RCS)的实测结果,并与普通金属反射面天线的结果进行了比较。
A reflector antenna with small radar cross section (RCS) is introduced. The antenna's main reflector is made of polarization selective surface (PSS) with parallel copper grids supported by a dielectric substrate. It is designed to reflect the parallel polarized waves and to pass the vertical polarized waves. The reflection and transmission characteristics of the PSS reflector are analyzed using the equivalent circuit model (ECM), and the measured radiation pattern and RCS of the antenna are presented and compared with those of an ordinary metallic reflector antenna. Good radiation pattern agreement between two antennas and small RCS performance of the PSS reflector antennas for vertical polarized waves are obtained.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1993年第11期A649-A652,共4页
Acta Aeronautica et Astronautica Sinica
基金
机电部电科院资助研究课题
关键词
等效电路法
天线
雷达
散射截面
equivalent circuit model, antenna radar cross section, radar cross section reduction, periodic structure surface, polarization selective surface
