摘要
天线的雷达散射截面是由结构散射项和模式散射项两个部份组成。在天线工作频率上,虽然模式散射项可以通过调整馈源匹配使其很小,但是宽频带的匹配实现起来并不容易。所以单单通过馈源匹配来降低天线的雷达散射截面所获得的带宽较窄,而且不能解决正交极化的RCS问题。本文分析了反射面天线带内的雷达散射截面,并就几种RCS减缩措施进行了讨论。
The scattering characteristics and radar cross section(RCS)in the operpting band Of reflector antennas are analyzed,and the measured RCS patterns Of two.reflector antennas are given. Reduction of antenna's RCS in band is a difficult and important subject in the research of antenna scattering.The measured data show that the RCS of reflector antenna can be reduced significantly when the mode component of reflector antenna's RCS is restrained.
出处
《电波科学学报》
EI
CSCD
1996年第2期18-21,共4页
Chinese Journal of Radio Science
关键词
天线
电磁散射
雷达散射截面
雷达截面减缩
Reflector antenna,Radar cross section,Electromagnetic scattering