收发共用的四口径多波束天线的设计  

Design of four-aperture multi-beam transceiver antenna

作　　者：王路阳 万继响 WANG Lu-yang;WAN Ji-xiang(China Academy of Space Technology(Xi’an),Xi’an 710100,China)

机构地区：[1]空间技术研究院西安分院,陕西西安710100

出　　处：《电子设计工程》2019年第6期69-72,77,共5页Electronic Design Engineering

摘　　要：文中针对目前Ka频段通信卫星中用到的多口径多波束天线进行研究,比较了单口径单馈源、单口径多馈源和多口径单馈源三种天线形式的优劣。对比了频率选择面和双频馈源这两种实现波束收发共用的方法并选择双频馈源技术实现收发共用。设定了天线的指标,研究了天线的波束设计、反射面参数的选取、馈源的设计和馈源阵的排布等问题,并根据设定的天线指标对反射面系统进行了建模仿真。结果表明,所设计的四口径天线在增益为40 dB时所有波束能完好的交叠,天线的C/I值大于18 dB,达到了设计指标的要求,完成了设计。This paper focuses on the multi-aperture multi-beam antenna used in current Ka-band communication satellites.First,the advantages and disadvantages of the three antenna types of singlecalibre single feed,single-calibre multi-feed and multi-calibration single feed are compared.Then compare the frequency selection surface and the dual-frequency feed source to achieve the common beam transmission and receiving method,select the dual-frequency feed technology to achieve transceiver.The design of the antenna beam,the selection of parameters for the reflector,the design of the feed and the arrangement of the feed array are studied.According to the set antenna index,the reflector system is modeledand simulated.The results show that the designed four-antenna antenna has overlapping ofall beams when the gain is 40dB,and the C/I value of the antenna is more than 18dB,Reached the design index requirements and completed the design.

关 键 词：四口径天线 多波束天线 参数确定 仿真 载干比 

分 类 号：TN828.5[电子电信—信息与通信工程]