摘要
天馈线调配网络是中波发射系统的重要组成部分。调配网络的主要作用是实现天线与馈线的阻抗匹配,另外还具有阻塞共塔频率干扰、抑制邻频干扰和防雷作用。多年的维修实践表明,由于设计不合理、调整不当或维护不及时造成的调配网络故障在整个发射系统故障中占有很大的比例。对此,以调配网络设计、调试和安装工程实践为基础,对中波天馈线调配网络的设计原则、调试方法、安装注意事项及常见问题处理进行详细论述,希望能为中波发射台的同行提供借鉴。
The antenna feeder distribution network is an important part o fthe medium wave transmission system.The main function o f the deployment network is to realize the impedance matching bewteen the antenna and the feeder.In addition,it also has theu fnction of blocking common tower frequency interference,suppressing adjacent frequency interference and lightning protection.The maintenance practice for many years shows that the deployment network faul tcaused by unreasonable design,improper adjustment or untimely maintenance accounts for a large proportion of the fault of the entire transmission system.Based on the design,commissioning and installation engineering practice of the distribution networkt,his paper discusses in detail the design principles,commissioning methods,installation precautions and the treatment of common problems fo the distribution network of the medium wave antenna feeder,ohping to provide reference for the peers of the medium wave transmitter.
作者
刘华安
LIU Hua’an(861 Sets,Radio and Television Bureau of Guizhou province,Tongren 554300,China)
出处
《电视技术》
2023年第2期93-96,共4页
Video Engineering
关键词
天馈线调配网络
安装调试
中波天馈线
antenna feeder distribution network
installation and commissioning
medium wave antenna feeder
