一款致冷介质加载同轴双频馈源的研制  

Development of a coaxial dualfrequency feeder loaded with refrigerant

作　　者：罗蓉 贺俊霞 LUO Rong;HE Junxia(The 39th Research Institute of China Electronic Technology Corporation,Xi'an 710065,China;Shaanxi Key Laboratory of Antenna and Control Technology,Xi'an 710065,China;The 16th research institute of China electronic technology corporation,Hefei 230043,China)

机构地区：[1]中国电子科技集团第三十九研究所,陕西西安710065 [2]陕西省天线与控制技术重点实验室,陕西西安710065 [3]中国电子科技集团第十六研究所,安徽合肥230043

出　　处：《测绘科学与工程》2020年第4期9-14,共6页Geomatics Science and Engineering

摘　　要：本文结合三维全波电磁仿真软件,研制了一款应用于致冷环境下的介质加载同轴双频馈源系统。仿真和实测结果表明:在工作频带内的驻波优于1.3:1,主波束等化特性良好。致冷状态下,对系统引入的噪温小于3K,显著提高了系统的增益与噪温之比,很好满足了工程应用需求。Combined with the threedimensional fullwave electromagnetic simulation software,a mediumloaded coaxial dualfrequency feed system applied in the refrigerating environment is developed.The simulation and actual measurement results show that the standing wave ratio in the operating band is better than 1.3:1,and the main beam equalization characteristics are good.In the refrigeration state,the noise temperature introduced to the system is less than 3K,which significantly improves the ratio of the system gain to the noise temperature and meets the needs of engineering applications.

关 键 词：VLBI 同轴馈源 低温电子学 介质加载馈源 同轴分波网络 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]