具有三陷波特性的新型超宽带天线设计与研究  

Design and research of novel UWB antenna with three notch characteristics

作　　者：李国金[1] 秦元龙 南敬昌[1] LI Guojin;QIN Yuanlong;NAN Jingchang(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,辽宁葫芦岛125105

出　　处：《传感器与微系统》2022年第11期89-92,96,共5页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61971210);辽宁省特聘教授项目(551710007004)。

摘　　要：提出了一种新型三陷波特性超宽带(UWB)天线。该天线采用FR4介质基板,由50Ω微带线馈电。天线由水杯形辐射贴片和改进的三切角矩形接地板组成,带宽覆盖到2.7~14.0 GHz。在辐射贴片中间开C形槽,产生了3.2~3.7 GHz频段的陷波特性,且在地板上刻蚀U形窄缝隙,实现了5.0~5.9 GHz频段的陷波特性,在微带馈线上开U形窄缝隙,能够实现7.9~8.7 GHz频段的陷波功能。仿真与测试结果基本一致,表明该天线能有效阻隔WiMAX(3.3~3.6 GHz)和WLAN(5.15~5.825 GHz)波段以及国际电信联盟(ITU,8.01~8.5 GHz)频段的窄带信号干扰。除陷波频段外该天线具有良好的性能和全向辐射特性,可广泛于各种超宽带系统中。A novel three notch ultra-wideband(UWB) antenna is proposed.The antenna adopts FR4 dielectric substrate and is fed by 50 Ω microstrip line.The antenna is composed of a water cup shaped radiation patch and an improved three tangent rectangular ground plate, which makes the bandwidth of the antenna cover 2.7~14.0 GHz.The notch characteristics of 3.2~3.7 GHz band are generated by cutting a C-shaped slot in the middle of the radiation patch, and the U-shaped narrow slot is etched on the floor to realize the notch characteristics in the frequency band of 5.0~5.9 GHz.By opening a U-shaped slot in the microstrip feeder, the notch function in the frequency band of 7.9~8.7 GHz can be realized.The simulation results are basically consistent with the test results, which show that the antenna can effectively block the narrowband signal interference in WiMAX(3.3~3.6 GHz),WLAN(5.15~5.825 GHz)and ITU(8.01~8.5 GHz).In addition to the notch band, the antenna has good performance and omnidirectional radiation characteristics, which can be widely used in various UWB systems.

关 键 词：超宽带天线 陷波特性 切角微带馈线 水杯形辐射贴片 C形槽 

分 类 号：TN822.8[电子电信—信息与通信工程]