城市中波发射台天馈线系统原址改造方案分析

Analysis of Reconstruction Scheme of Local Antenna Feeder System of Urban Medium Wave Transmitter

本文介绍位于城市市区的泉州401中波发射台,针对周边区域禁建和限高要求与城市规划建设之间的矛盾,按照先建后拆的原则在原址进行整体技术升级改造。本文对改造的天馈线系统的技术方案进行分析,结合中央广播无线覆盖工程在401台的建设,分析了改造前后的覆盖信号优化,及电磁辐射的变化。本文的工作和研究,能够为位于城市的中波发射台的改造提供好的参考价值,为我国未来无线广播传输覆盖的发展提供工程经验与技术支撑。

This paper introduces the Quanzhou 401 wave transmitter station located in the urban area.In view of the contradiction between the prohibition of construction in the surrounding areas and the high requirements and the urban planning and construction,the overall technical upgrading and transformation of the original site is carried out according to the principle of first building and then dismantling.In this paper,the technical scheme of the reconstructed antenna and feeder system is analyzed,and the optimization of coverage signal and the change of electromagnetic radiation before and after reconstructing are analyzed in combination with the construction of 401 radio coverage stations in the central broadcasting project.The work and research in this paper can provide a good reference value for the transformation of urban medium wave transmitter,and provide engineering experience and technical support for the future development of wireless broadcasting transmission coverage in China.