小型化双向波束矿用定位终端天线设计  

Design of a miniaturized bidirectional beam mine positioning terminal antenna

作　　者：李烨 金业勇 LI Ye;JIN Yeyong(CCTEG Changzhou Research Institute,Changzhou 213015,China;Tiandi(Changzhou)Automation Co.,Ltd.,Changzhou 213015,China)

机构地区：[1]中煤科工集团常州研究院有限公司,江苏常州213015 [2]天地(常州)自动化股份有限公司,江苏常州213015

出　　处：《工矿自动化》2024年第11期127-131,178,共6页Journal Of Mine Automation

基　　金：江苏省科技成果转化专项基金项目(BA2022040);天地(常州)自动化股份有限公司科研项目(2023TY4012)。

摘　　要：双向天线可有效提高信号覆盖范围和天线耦合效率,削弱由巷道侧壁反射所带来的多径效应,适用于结构狭长、断面较小的煤矿井下巷道。针对现有双向天线尺寸大、增益低、带宽不满足井下UWB精确定位系统要求等问题,设计了一种小型化双向波束矿用定位终端天线。通过布置2个等幅同相U形单极子天线并在金属地板上引入U形槽结构,在保证天线整体结构紧凑的同时,实现了双向边射波束辐射特性。仿真和实测结果表明:天线的-10 dB带宽为1GHz(3.6~4.6 GHz),可有效覆盖煤矿井下UWB人员精确定位系统的工作频段(3.7~4.2 GHz);在3.6~4.6 GHz频段内,天线峰值增益为2.2~2.5 dBi,具有良好的幅频响应。Bidirectional antennas can effectively improve signal coverage and antenna coupling efficiency,and weaken multipath effects caused by reflections from roadway sidewalls.These characteristics make them suitable for underground coal mine roadways with narrow structures and small cross-section.To address the problems of large size,low gain,and insufficient bandwidth of existing bidirectional antennas that do not meet the requirements of underground ultra-wide band(UWB)precise positioning systems,a miniaturized bidirectional beam mine positioning terminal antenna was designed.By arranging two equal-amplitude,in-phase U-shaped monopole antennas and introducing a U-shaped slot structure on the metal floor,the radiation characteristics of the bidirectional side-beam were realized while ensuring the compact structure of the antennas.Simulation and experimental results demonstrated that the antenna achieved a−10 dB bandwidth of 1 GHz(3.6-4.6 GHz),effectively covering the operational frequency band(3.7-4.2 GHz)of UWB personnel precise positioning systems in coal mines.Within the frequency band of 3.6-4.6 GHz,the antenna achieved a peak gain of 2.2-2.5 dBi,with good amplitude-frequency response.

关 键 词：井下精确定位 超宽带 小型化双向波束天线 U形单极子天线 U形槽 

分 类 号：TD655.3[矿业工程—矿山机电]