摘要
随着我国城市化进程快速推进,原有中短波发射台所处区域逐步从城市边缘地区发展成城市中心,而通常中短波发射台功率可达数百千瓦,带来的电磁辐射污染问题越来越引起政府和周边居民重视。本文研究了某发射台四塔中波天线电磁辐射情况,并通过增加反射幕,改善了四塔中波天线背向电磁环境,减少了背向场强对发射台周边敏感区域的电磁辐射。该思路可为某些定向中波天线电磁环境改善提供参考方案。
With the rapid progress of urbanization in China, the area where the original medium and short wave station is located has gradually developed from the fringe area of the city to the city center. And the power of the medium and short wave station can usually reach hundreds of kilowatts, causing the electromagnetic radiation pollution problems that increasingly arouse the attention of the government and surrounding residents. This paper studies the electromagnetic radiation of the four-tower medium-wave antenna. By adding a reflection screen, the back electromagnetic environment of the four-tower medium wave antennas is improved, and the electromagnetic radiation of the back field strength to the sensitive area around the station is reduced. This idea can provide a reference scheme for improving the electromagnetic environment of some directional medium wave antennas.
作者
康晓乐
Kang Xiaoe(Radio,Film and Television Design and Research Institute,China Radio and Television,Beijing 100045,China)
出处
《广播与电视技术》
2023年第1期76-79,共4页
Radio & TV Broadcast Engineering
关键词
四塔中波天线
覆盖预测分析
电磁场超标范围
Four-tower medium wave antenna
Coverage prediction analysis
Electromagnetic field exceeding standard range
