ka频段低温接收前端设计  

The design of Ka band cryogenic receiver front-end

作　　者：王自力[1] 刘敏[1] 张迎春[1] 贾黎[1] 张士刚[1] 何川[1] 

机构地区：[1]中国电子科技集团公司第十六研究所,合肥230043

出　　处：《低温与超导》2014年第3期6-10,共5页Cryogenics and Superconductivity

摘　　要：低温接收前端是深空探测地面应用系统的重要组成部分,深空测控距离遥远,需要挖掘一切潜力提高地面设备的接收能力。接收前端工作在低温环境,能够有效降低接收系统的噪声温度,提高系统的G/T值。提出了馈源制冷接收前端设计的若干关键技术,并给出样品研制测试结果。测试结果表明Ka频段采用馈源制冷低温接收前端噪声温度小于45K。The cryogenic receiver front end is an important and necessary part in the ground assisted system of deep space ex- ploration. As deep space explorer is far away from the earth, it is need to excavate all potential for improving the ability of the ground receiver equipment. Some key techniques were analyzed and discussed on the design of frigorific feed cryogenic receiver frond end. The results show that the noise temperature of the former system is lower than 45 K.

关 键 词：KA频段 馈源制冷 低温接收机 深空 

分 类 号：TN929.533[电子电信—通信与信息系统]