摘要
本文详实介绍了中波发射台双频共塔天线调配网络的设计与实现。采用预调网络来平衡阻抗,阻塞网络隔离相互干扰,"T"型网络实现阻抗匹配,三个网络共同组成双频网络的核心。选用中波天线调配网络常用的陶瓷饼电容器,利用LC谐振网络特性,结合调配网络的设计要求和经验计算方法,对调配网络的阻抗作逐点计算和分析,从而计算出LC的最佳取值并进行计算验证,用最简捷实用方法使网络设计一步步得以实现,对中波双频共塔天调网络的调整维护有重要作用。
This paper introduces in detail design and implementation of dual-frequency co-tower antenna deployment network for mediumwave transmitter. Pre-adjusted network is used to balance impedance, blocking network isolates mutual interference, "T" type network realizes impedance matching, and three networks together form core of dual-frequency network. The paper selects ceramic cake capacitor commonly used in medium-wave antenna deployment network, makes use of characteristics of LC resonant network, combines design requirements and empirical calculation method of deployment network, calculates and analyzes impedance of deployment network point-by-point, so as to calculate the best value of LC and also performs calculation and verifcation. The paper uses the most simple and practical method to realize network design step by step, which plays an important role in adjustment and maintenance of MW dual-frequency co-tower antenna network.
作者
朱兴华
Zhu Xinghua(Guizhou Radio and Television Bureau 718,Guizhou 562400,China)
出处
《广播与电视技术》
2020年第8期94-99,共6页
Radio & TV Broadcast Engineering
关键词
中波
调配网络
双频共塔
Medium wave
Deployment network
Dual-frequency co-tower
