大功率调频发射机多工共用天馈系统升级改造的分析与实践

Analysis and Practice of Multiplexed Sharing Antenna & Feeder System Upgrading for High-power FM Transmitter

本文介绍了山西广播电视无线管理中心对省直属骨干发射台228台11套大功率调频发射机共用天馈系统的升级改造技术方案和工程实践。重点介绍了11套大功率调频发射机通过多工器实现无干扰共用天馈系统的升级改造方案和同塔直列两副60kW六层四面双偶极板调频天线仿真设计及主向下倾零点填充的原理及方法,为大型广播发射台多工共用调频天馈系统数字化升级改造提供了参考。

This paper introduces the technical solution and engineering practice of eleven sets of sharing a common antenna&feeder system upgrading project for high-power FM transmitters in Shanxi Province Radio and Television Radio Regulation Center 228 Station.It mainly introduces the upgrading scheme of eleven sets of high-power FM transmitters realizes interference-free effect by using combiner.It gives out the principle and method of main directional pattern tilting null fll for two sets 60 kW 6-layer 4 side FM dipole panel antenna which are installed in the same tower.It provides some references for the digitalization of FM antenna&feed system digital in large radio stations.