测控地面站天线无源互调干扰分析  

PIM Interference Analysis In TT&C Ground Station Antenna

作　　者：李岱昀 张宇[1] 葛文振 马行军[1] Li Daiyun;Zhang Yu;Ge Wenzhen;Ma Xingjun(The 39st Research Institute of CETC,xi'an,shaanxi,710065)

机构地区：[1]中国电子科技集团公司第39研究所,西安710065

出　　处：《测控与通信》2022年第2期22-25,28,共5页

摘　　要：本文分析了测控地面站中天线无源互调干扰(PIMI)的产生机理、频谱特性和传播方式。基于各站点设备通用的原则,设计了无源互调测试系统。在工程实践中,测试系统可以分辨各不同微波器件的无源互调特性。结合外界干扰、材料选择、连接工艺、测试联试等因素给出天线无源互调干扰的控制措施。最后,给出1个工程实例,有效验证了测试方法和控制措施的可行性。This paper analyzes the generation mechanism,spectrum characteristics and propagation mode of the antenna passive intermodulation interference(PIMI)in the TT&C ground station.Based on general principles,design the passive intermodulation system test of the site.In engineering practice,the test system can adjust the passive mutual characteristics of different microwave devices.Combining the factors of external interference,material selection,connection technology,and joint test,the control measures for the passive intermodulation interference of the antenna are given.Finally,an engineering example is given,which effectively verifies the feasibility of the test method and control measures.

关 键 词：无源互调干扰 测控地面站 测试方法 控制措施 

分 类 号：TN9[电子电信—信息与通信工程]