多波束卡塞格伦天线及馈源阵列优化设计  

Optimal Design of Multi-beam Cassegrain Antenna and Its Feed Array

作　　者：李增科 张晓冲 吴旭 付博实 LI Zengke;ZHANG Xiaochong;WU Xu;FU Boshi(Hebei Branch,China Communications System Co. ,Ltd. ,Shijiazhuang 050081,China;Unit 32036,PLA,Chongqing 400054,China)

机构地区：[1]中华通信系统有限责任公司河北分公司,河北石家庄050081 [2]中国人民解放军32036部队,重庆400054

出　　处：《无线电工程》2020年第12期1069-1072,共4页Radio Engineering

摘　　要：针对临近空间飞行器测控的需求,设计了一种工作于Ka频段的2.5 m多波束卡塞格伦天线,能够实现±2.0°的波束覆盖,在覆盖范围内偏馈损失小于2 dB,满足高增益低旁瓣的要求。通过对多波束卡塞格伦天线的设计方法进行总结及对馈源多波束阵列进行优化分析,达到降低偏馈损失的目的,对天线的优化设计有一定的指导意义。Aiming at the requirements of near space vehicle TT&C,a 2.5 m multi-beam Cassegrain antenna working in Ka band is designed,which can achieve±2.0°beam coverage.The offset feed loss within the coverage area is less than 2 dB,and meets the high gain and low side lobe requirements.By summarizing the design method of the multi-beam Cassegrain antenna and analyzing the multi-beam feed array,the purpose of reducing the offset loss is achieved,which has guiding significance for optimal design of antenna.

关 键 词：多波束卡塞格伦天线 偏馈损失 波束覆盖 

分 类 号：TN82[电子电信—信息与通信工程]