摘要
根据无线电高度表工作原理和外场原位测试需求,设计了一种基于T形微带线馈电结构的天线信号耦合器,可实现与机载高度表天线信号的收发耦合,并有效隔离外部电磁环境对测试的影响。通过HFSS软件得到耦合器天线增益达3dB,从理论上达到了设计的需求。在实物验证过程中,通过与多型飞机无线电高度表系统进行了外场环境下的对接验证,试验表明,该天线信号耦合器作为直接与机载高度表天线对接的前端,测试结果稳定可靠,能够满足部队外场对无线电高度表系统开展性能检测的需要。
According to the working principle of the radio altimeter and the in-situ test of the external field,an antenna signal coupler based on the T-shaped microstrip line feed structure is designed,which can realize the transmission and reception coupling with the airborne altimeter antenna signal and effectively isolate the external electromagnetic The impact of the environment on testing.The gain of the coupler antenna is 3 dB through the HFSS software,which theoretically meets the design requirements.In the physical verification process,the docking verification in the external field environment was carried out with the multi-type aircraft radio altimeter system.The test shows that the antenna signal coupler is used as the front end directly docked with the airborne altimeter antenna.The test result is stable and reliable.Meet the needs of the military field to perform performance testing on the radio altimeter system.
作者
刘勇
吴阳勇
白惠文
吴忠德
Liu Yongi;Wu Yangyong;Bai Huiwen;Wu Zhongde(Naval Aviation University,Yantai 264001,China;Unit 92514 of PLA,Yantai 264001,China)
出处
《国外电子测量技术》
2019年第12期82-85,共4页
Foreign Electronic Measurement Technology
关键词
高度表
信号耦合
微带天线
原位测试
altimeter
signal coupling
microstrip antenna
in-situ test
