摘要
双频共用和多频共用技术是目前卫星通信地球站天线的一个重要发展方向,其可以扩大通信容量,实现一站多用,大大降低成本。基于微波天线设计理论,设计了一种L/S/Ku三频段2.4 m天线,天线主副面曲线采用卡塞格伦曲线,设计了频率选择副面作为天线的副面。天线应用两个馈源,前馈馈源为L/S频段,后馈馈源为Ku频段,可以同时工作在L/S频段和Ku频段,具有良好的辐射方向图。给出了天线的实测结果,测试结果与技术要求吻合很好。
Dual-band and multi-band sharing technologies are important developing directions of satellite communication antennas in ground stations,which can increase the communication capacity,realize multi-functional station and decrease cost dramatically.Based on the theory of microwave antenna design,a 2. 4 m L/S/Ku three-band antenna is designed. The feed main reflector and feed sub reflector use Cassegrain.The sub reflector is designed as frequency selective. Two feeds are used in the antenna,the front feed is L/S band,and the backward-feed is Ku band.The antenna can work in L/S band and Ku band at the same time,and it has good radiation pattern.The measured results of the antenna are given,which meet the technical requirement very well.
作者
张志华
宫玉松
ZHANG Zhihua;GONG Yusong(The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《无线电通信技术》
2018年第4期398-401,共4页
Radio Communications Technology
基金
国家部委基金资助项目
关键词
天线
馈源
频率选择
副面
antenna
feed
frequency selective
feed sub reflector
