摘要
现有中波发射天线应用时虽占地小,但信号不够强,在应用中的收测强度比立塔式中波发射天线性能差。因此,本次提议采用锥面顶负荷自立塔式中波发射天线,并对其工作原理和应用进行分析,以增强其应用效果。首先分析中波发射天线具有天线加顶原理、电磁场交叉原理和天线加载技术的工作原理。然后设计中波天线的预调网络时,根据不同的阻抗进行串联及并联的设计,选用T型网络进行匹配。之后对天线本身、天调网络以及电源三个部分进行防雷技术的设计。最后确认天线中天线高度,地网及地阻和调配网络三个部分的参数设计。实验将锥面顶负荷天线与铁塔天线进行收测强度的对比,得出在200m内锥面顶负荷天线的收测强度好于铁塔天线,200m外与略强于铁塔天线收测值结果,可以体现出锥面顶负荷自立塔式中波发射天线在实际应用中的收测强度优于铁塔天线。
Although the existing medium wave transmission antenna occupies a small area in application,the signal is not strong enough,and the receiving strength in application is worse than that of tower type medium wave transmission antenna.Therefore,this proposal adopts a conical top load self-supporting tower type medium wave transmission antenna,and analyzes its working principle and application to enhance its application effect.Firstly,analyze the working principles of the medium wave transmission antenna,including antenna topping principle,electromagnetic field crossing principle,and antenna loading technology.Then,when designing the pre tuning network of the medium wave antenna,series and parallel designs are carried out based on different impedances,and a T-shaped network is selected for matching.Afterwards,lightning protection technology will be designed for the antenna itself,the antenna network,and the power supply.Finally,confirm the parameter design of the antenna height,ground network,ground resistance,and deployment network in the antenna.The experiment compared the receiving strength of the conical top load antenna and the tower antenna,and found that the receiving strength of the conical top load antenna is better than the tower antenna within 200m,and slightly stronger than the tower antenna outside 200m.The results show that the receiving strength of the conical top load self-supporting tower type medium wave transmission skyline is better than the tower antenna in practical applications.
出处
《现代传输》
2024年第1期51-55,共5页
Modern Transmission
关键词
顶负荷天线
自立塔式天线
中波发射天线
锥面天线
top load antenna
Self standing tower antenna
Medium wave transmission antenna
Conical antenna
