天线波瓣宽度对巷道中电磁波传播特性的影响  

Influence of antenna lobe width on propagation characteristics of electromagnetic wave in tunnel

作　　者：陈诺 成凌飞 张薇静 焦晓龙 CHEN Nuo;CHENG Lingfei;ZHANG Weijing;JIAO Xiaolong(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;School of Physics and Electronic Information Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000 [2]河南理工大学物理与电子信息学院,河南焦作454000

出　　处：《传感器与微系统》2022年第3期47-50,53,共5页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(51244003);河南省高等学校矿山信息化重点学科开放实验室开放基金资助项目(KZ2012-01)。

摘　　要：选取矩形巷道作为受限空间模型,基于镜像射线追踪法,通过仿真及实验分析验证了全向天线和不同的定向天线对受限空间内电波覆盖的影响。在巷道、矿井这类受限空间中,定向天线的第一分界点比全向天线的第一分界更远;在矩形巷道中,半功率宽度对电波覆盖效果起着至关重要的作用,同时可以通过适当增加第一零点宽度来改善电波的覆盖效果;定向天线存在辐射盲区,在定向天线的辐射盲区内,全向天线的接收功率高于定向天线的接收功率,在定向天线的辐射区域内,定向天线的接收功率高于全向天线的接收功率。研究内容对矩形巷道中无线通信系统的天线的设计、选型及优化布局具有指导意义。Rectangular tunnel is selected as the restricted space model,based on mirror ray tracing method,influence of the omnidirectional antenna and different directional antennas on coverage of the radio wave in restricted space is verified through simulation and experimental analysis.It is concluded that in restricted spaces such as tunnel and mines,the first dividing point of the directional antenna is farther than the first dividing point of the omnidirectional antenna;in rectangular tunnel,the half-power width plays a crucial role in the coverage effect of radio waves At the same time,the coverage effect of the radio wave can be improved by appropriately increasing the width of the first zero point;there is a radiation blind area in the directional antenna.In the radiation blind area of the directional antenna,the received power of the omnidirectional antenna is higher than the received power of the directional antenna.In the radiation area of the antenna,the received power of the directional antenna is higher than that of the omnidirectional antenna.The research content is of guiding significance for design,selection and optimal layout of the antenna of the wireless communication system in the rectangular tunnel.

关 键 词：矩形巷道 电磁波 天线 电波覆盖 

分 类 号：TN929.4[电子电信—通信与信息系统]