定向耦合器在天线隔离度测试中的应用  

Application of D irectional Coupler in Isolation Test Between Antennas

作　　者：梁小亮[1] 史剑锋[1] 宁敏[1] LIANG Xiaoliang;SHI Jianfeng;NING Min(Shanghai Aircraft Design and Research Institute,Shanghai 201210,China)

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《民用飞机设计与研究》2018年第2期13-16,共4页Civil Aircraft Design & Research

摘　　要：飞机机载天线之间可能会因电磁能量互相耦合而产生电磁干扰,天线隔离度测试是验证机载天线布局设计的重要手段之一。根据定向耦合器性能参数定义,通过测量定向耦合器耦合端口和隔离端口的功率值计算出发射天线的净输入功率和接收天线的净输出功率,从而得到天线隔离度。通过机上测试,这种隔离度测试方法简便快捷、稳定可靠,试验结果准确有效。Electromagnetic field commutative coupling between antennas may generate electromagnetic interference. The test of isolation between antennas is one of methods to verify antenna layout design. According to the definition of performance parameters of directional coupler,this paper calculates and test the isolation between antenna on the aircraft by testing pure input power of transmit antenna and output power of receive antenna on aircraft. This method is simple and stable,and the results are valid.

关 键 词：定向耦合器 天线隔离度 电磁干扰 

分 类 号：V243.4[航空宇航科学与技术—飞行器设计]