摘要
为了设计高性能的相控阵馈源(phased array feed, PAF),通过反射面天线焦面场最优采样的研究,给出了PAF参数与天线口径效率之间的关系,总结了PAF的最优采样范围和单元间距,导出了PAF单元数量的计算公式.给出了一个9 m天线的PAF设计实例和性能分析,在4~7 GHz频率范围内,扫描范围为±3°时,天线口径效率大于51%,验证了本文分析与设计方法的正确性,该方法可用于指导PAF的工程设计.
In order to design a phased array feed with high performance, the relationship between PAF parameters and aperture efficiency is given through the study of optimal sampling of focal field of reflector antenna. The optimal sampling range and element spacing of PAF are summarized, and the calculation formula of element number is derived.The phased array feed of a 9 m antenna is designed. The antenna aperture efficiency is greater than 51% when the scanning range is ±3° in the frequency range of 4-7 GHz, which verifies the effectiveness of the design method. The approach in this paper can be used to guide the engineering design of phased array feed.
作者
田佳怿
杜彪
伍洋
刘胜文
TIAN Jiayi;DU Biao;WU Yang;LIU Shengwen(The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《电波科学学报》
CSCD
北大核心
2022年第1期58-66,共9页
Chinese Journal of Radio Science
