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短波天线体积庞大、线杆高度较高,馈线长度较长,检查维修较为不便。对短波天线馈线系统的检查和测试一直缺乏经济、有效的技术手段。提出根据短波天线馈线系统的传输特性,利用电波反射特点,运用定向耦合器分离入射波和反射波,计算短波天线馈线系统的当前反射系数,与其初始值进行比较,从而为判断天线馈线系统性能变化提供定量的参考数据,是一种检测短波天线馈线有效、经济的方法。
Shortwave antenna bulky, high pole height, longer feeder length, inspection and maintenance more inconvenient. There has been a lack of economical and effective technical means to inspect and test shortwave antenna feeder systems. According to the transmission characteristics of the short-wave antenna feeder system, using the reflected characteristics of the electric wave, the directional coupler is used to separate the incident wave and the reflected wave, and the current reflection coefficient of the short-wave antenna feeder system is calculated and compared with the initial value. Providing quantitative reference data is an effective and economical method of detecting shortwave antenna feeders.