调频天线驻波比过大故障分析与维护  

The Analysis and Maintenance of FM Antenna VSWR Faults

作　　者：张隆 ZHANG Long(Transmission Department of Tianjin Radio and Television Station, Tianjin 300070, Chin)

机构地区：[1]天津广播电视台传输发射部,天津300070

出　　处：《广播与电视技术》2017年第4期101-103,共3页Radio & TV Broadcast Engineering

摘　　要：天津调频天线采用6层4面双偶极板天线,承载功率120kW。本文针对机房开关板上反应的驻波变大现象进行逐级排查、分析,并对判断步骤、维修方法进行阐述,给出天线振子由于进水导致驻波变大的解决方法。In Tianjin, FM antenna adopts 6 layer and 4 plane dual dipole antenna, carrying 120kW power, This paper analyzes the fault of VSWR （Voltage Standing Wave Ratio） on the FM patch panel step by step, and describes the judgment process and maintenance methods. We give out solutions of VSWR faults caused by oscillator immersed in water.

关 键 词：开关板 驻波比 时域测量 变阻器 天线振子 

分 类 号：TN934.2[电子电信—信号与信息处理]