小功率短波笼形天线定向改造研究  

Research on Directional Transformation of Low-power Short-wave Cage Antenna

作　　者：康晓乐 冯玉梅 Kang Xiaole;Feng Yumei(Radio,Film&TV Design and Research Institute Co.,Ltd.,Beijing 100045,China;Electromagnetic Environment Research and Testing Laboratory,NRTA,Beijing 100045,China)

机构地区：[1]中广电广播电影电视设计研究院有限公司,北京100045 [2]电磁环境研究与测试国家广播电视总局实验室,北京100045

出　　处：《广播与电视技术》2023年第9期98-102,共5页Radio & TV Broadcast Engineering

摘　　要：针对某些小功率短波发射台的定向覆盖需求,本文在原有全向天线基础上,创造性地提出了定向天线改造方案。为了尽可能维持原有场地布局,利用原有天线结构,降低改造成本,考虑通过加载反射器的方式改造原有全向小功率短波发射天线为定向天线。对改造后的定向天线进行实地架设,并对天线驻波比和方向图进行测试,验证了仿真结果的准确性,同时对覆盖场强进行测试,验证了改造后天线的定向效果。In view of the directional coverage requirements of some low-power short-wave transmitting stations,this paper creatively proposes a directional antenna transformation scheme based on the original omnidirectional antenna.To maintain the original site layout as much as possible,use the original antenna structure,and reduce the cost of renovation,it is considered to transform the original omnidirectional low-power short-wave transmitting antenna into a directional antenna by loading a reflector.The modified directional antenna is erected on the spot,and the standing wave ratio and pattern of the antenna are tested to verify the accuracy of the simulation results.At the same time,the coverage field strength is tested to verify the directional effect of the modified antenna.

关 键 词：笼形天线 定向改造 天线测试 

分 类 号：TN822.2[电子电信—信息与通信工程]