天线RCS减缩技术研究的新进展

Development of Antennas'RCS Reduction

简要回顾了国内天线ＲＣＳ减缩技术研究的情况，介绍了作者近年来在此方面取得的成果。在对各种降低天线ＲＣＳ技术途径研究的基础上，通过对天线散射机理的理论分析和实验研究，提出了由抑制模式项散射而降低天线ＲＣＳ的模式项消去法天线ＲＣＳ减缩技术，并就此技术在几种反射面天线上的应用进行了探讨。在典型双反射面天线上应用此项技术所得的实验结果表明，采用此项技术以后天线的ＲＣＳ可以降低２０ｄＢ左右，而天线的增益下降不到１ｄＢ。微带天线将是解决天线ＲＣＳ问题的发展方向，文中也就此问题作了讨论。

A summary of the research on RCS reduction of antennas and a new RCS reduction technique, which reduces RCS by restraining the re-radiated retum of reflector antenna, is given in the paper,It is a much easy way for practice and represents a new approach of antenna RCS reduction.Thetechnique is applied to a dual reflectors antenna, and the measured results show that RCS can be reducedabout 20 dB and the gain loss is less than1 dB As an available low RCS antenna,micro-strip patch and itsRCS reduction techniques are simply discussed.