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所谓天馈系统是指天线向周围的空间辐射电磁波,天馈系统包括天线系统与馈线系统两大类,天馈系统日常运行过程中是否可以将发射机输出的功率有效的辐射向空中,发射天线会起到决定性作用,发射天线的工作状态良好,发射机的输出功率也会正常,否则会输出功率会像假负载被转化成热能损耗掉,由此可见,天馈系统的故障分析及维护至关重要。文章主要结合笔者的实践经验,总结电视发射天馈系统的常见故障及维护方法。
The so-called antenna system refers to the antenna to the surrounding space radiation electromagnetic waves, the antenna system includes the antenna system and feeder system in two categories, day-to-day feeding system in the daily operation of the transmitter output power can be effective radiation to the sky, transmitting antenna Will play a decisive role in launching the antenna work in good condition, the transmitter output power will be normal, otherwise the output power will be like a false load is converted into heat loss, we can see that the antenna system failure analysis and maintenance Important. The article mainly combines the author’s practical experience to summarize the common failures and maintenance methods of TV transmitting antenna feeding system.