摘要
广播电视发射天线是广播电视发射系统的重要组成部分,是影响节目安全播出的关键因素之一。文章通过对十字形天线基本原理的分析,对其增益、结构以及天线与馈线的匹配问题进行了研究,为应急制作十字形天线提供了具体依据和方法,可以作为条件艰苦发射台站解决天线故障的应急预案,为广播电视的安全播出做出重要保障。
Radio and television transmitting antenna is an important part of radio and television transmission system,which is one of the key factors affecting the program safe broadcasting.Through the analysis of the basic principle of the cross-shaped antenna,the paper studies the gain,the structure and the matching between the antenna and the feeder,provides a basis and specifc method for emergency cross-shaped antenna,which can be used as a contingency plan for solving the antenna failure at a diffcult transmitting station and makes an important guarantee of the security of radio and television broadcasting.
作者
蒋茜
Jiang Qian(Gansu Radio and Television School,Gansu 730046,China)
出处
《广播与电视技术》
2019年第9期104-106,共3页
Radio & TV Broadcast Engineering
关键词
广播电视发射
十字形天线
半波折合振子
Radio and TV signal transmitting
Cross-shaped antenna
Half-wave folded dipole
作者简介
蒋茜,女,1966年生,全日制本科,在职研究生、工程硕士,高级讲师,主要从事广播电视技术教学及研究。
