2.A Cassegrain antenna with frequency selective subreflector is introduced, and the measured radiation Patterns and rsdar cross section (ROS) of the antenna are given. In comparison with ordinary metallic subreflector, this antenna can obtain similar radiation pattern and about 20dB of ROS redaction.
低RCS选频滤波副反射面天线冯林，邓书辉，阮颖铮，胡玉兰（电子科技大学）关键词天线，天线散射，频率选择表面，雷达散射截面卡塞格伦天线和其它双反射面天线的雷达散射截面（ROS）是由天线本身的结构和增益决定的，它包括天线对来波直接散射构成的结构散射项O’.
