中波发射机双频共塔天线调配网络分析及调试分析

Analysis and Debugging Analysis of Dual-band Common Tower Antenna Deployment Network of Medium Wave Transmitter

为控制铁塔建设成本,具有多个频率的中波发射台通常采用双频共塔技术,来设计天调网络系统,让不同频率的中波发射机和天线能相互结合,从而实现阻抗匹配,进一步加强发射机功率,进而提高中波发射机应用效果。基于此,本文以吉安八四一台中波双频共塔调试为主要研究对象,通过分析天线调配网络的基本功能,让相关人员对天线调配网络内容有初步了解,再从不同方面来分析中波发射机天线调配网络的组成结构,如抑制高频回馈网络、阻抗匹配网络、预调网络、防雷网络等,探究中波发射机双频共塔天线调配网络中存在的问题,针对问题提出天线调配网络改造方案,来提高其日常使用效果。

In order to control the construction cost of the tower,the dual-frequency common tower technology is usually used by the medium-wave transmitter stations with multiple frequencies to design the sky modulation network system,so that the medium-wave transmitters and antennas with different frequencies can be combined with each other,so as to achieve impedance matching,further strengthen the transmitter power,and improve the application effect of the medium-wave transmitter.Based on this,this paper takes the debugging of the medium-wave dual-frequency common tower of Ji'an 841 as the main research object.Through analyzing the basic functions of the antenna deployment network,relevant personnel can have a preliminary understanding of the content of the antenna deployment network,and then analyze the composition and structure of the medium-wave transmitter antenna deployment network from different aspects,such as suppression high-frequency feedback network,impedance matching network,pre-modulation network,lightning protection network,etc,To explore the problems existing in the dual-band common tower antenna deployment network of the medium wave transmitter,and propose the antenna deployment network transformation scheme to improve its daily use effect.