超宽带阶梯形微带单极子天线的设计与研究  

Design and research of ultra-wideband stepped microstrip monopole antenna

作　　者：南敬昌[1] 王明寰 NAN Jingchang;WANG Minghuan(School of Electronics and Information Engineering,Liaoning Technical University,Huludao 125105,China)

机构地区：[1]辽宁工程技术大学电子与信息工程学院,葫芦岛125105

出　　处：《电波科学学报》2021年第2期225-230,共6页Chinese Journal of Radio Science

基　　金：国家自然科学基金(61971210);辽宁特聘教授项目(551806006);企业合作项目(基于物联网的矿山车辆智慧防碰撞系统研究)。

摘　　要：针对当前已有超宽带(ultra-wideband,UWB)微带单极子天线带宽窄、尺寸大等缺陷,设计了一款小型化UWB阶梯形微带单极子天线,采用开槽的矩形辐射贴片、阶梯形微带馈电线和缺陷地面结构(defected ground structure,DGS)实现良好的UWB特性.对天线的回波损耗、电压驻波比(voltage standing wave ratio,VSWR)、辐射方向图及增益进行了仿真计算和优化设计,实测显示,天线的工作频段为2.6~22.1 GHz,增益最大值为12.9 dBi,仿真和实测结果基本吻合.所设计天线结构简单、覆盖频率广、尺寸小、工作频带内具有良好的辐射特性,表明该天线适用于各种UWB通信系统中.Aiming at the current shortcomings of ultra-wideband(UWB)microstrip monopole antennas such as narrow bandwidth and large size,a miniaturized ultra-wideband stepped microstrip monopole antenna is designed.The good UWB characteristic is obtained by using rectangular radiation patch slots,a stepped microstrip feeder and defective ground structure(DGS).The antenna return loss,voltage standing wave ratio(VSWR),radiation pattern and gain were simulated and optimized.The measured results show that the operating frequency range of antenna is 2.6-22.1 GHz,and the maximum gain is 12.9 dBi.The simulation and measurement results basically match.The antenna has simple structure,wide coverage frequency,compact size and good radiation characteristics in the operating frequency band,indicating that it is suitable for various UWB communication systems.

关 键 词：小型化 超宽带(UWB) 阶梯形微带馈电线 单极子天线 缺陷地面结构(DGS) 

分 类 号：TN822.8[电子电信—信息与通信工程]