双层宽波束天线设计  

Design of a Double-layer Wide-beam Antenna

作　　者：姜兴[1] 王开发[1] 廖欣[1] 孙靖虎 王继恒 杨明 JIANG Xing;WANG Kaifa;LIAO Xin;SUN Jinghu;WANG Jiheng;YANG Ming(School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China;Advanced R&D Department,Desay SV Intelligent Transportation Technology Research Institute Co.,Ltd.,Huizhou 516000,China)

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004 [2]德赛西威智能交通研究院有限技术先期研发部,广东惠州516000

出　　处：《电讯技术》2021年第12期1592-1598,共7页Telecommunication Engineering

基　　金：广西科技重大专项(桂科AA19254012)。

摘　　要：针对宽波束天线在车载雷达中的应用,突破角雷达方位面3 dB波束宽度的限制,实现微带阵列天线在水平面的宽波束覆盖,设计了一款1×10串馈微带双层结构天线。线阵单元采用道尔夫-切比雪夫(Dolf-Chebyshev)综合法电流分布来达到降低天线俯仰面副瓣的效果,在串馈阵列上方加载寄生贴片和介质基板拓展天线方位面的3 dB波束宽度。分析了双层天线展宽波束的原理,加工并实测了双层宽波束天线,其方位面的3 dB波束宽度为134.6°,增益达到10.6 dB,副瓣电平为-19.8 dB,可以满足车载角雷达天线需求。For the application of wide-beam antenna in vehicle borne radar,a 1×10 series fed microstrip double-layer structure antenna is designed,which breaks through the limitation of 3 dB beam width in azimuth plane of angle radar and realizes wide-beam coverage of microstrip array antenna in horizontal plane.In order to reduce the side-lobe of the antenna in the vertical plane,the Dolf-Chebyshev current distribution method is used in the linear array unit,and the parasitic patch and dielectric substrate are loaded above the series fed array to expand the 3 dB beam width of the antenna azimuth plane.The principle of broadening beam of double-layer antenna is analyzed,and the double-layer wide-beam antenna is fabricated and measured.The measured results show that the 3 dB beam width of the azimuth plane of the antenna is 134.6°,the gain is 10.6 dB,and the side-lobe level is-19.8 dB.The specifications meet the requirements of vehicle borne angle radar antenna.

关 键 词：77 GHz车载角雷达 宽波束天线 双层结构 寄生贴片 

分 类 号：TN952[电子电信—信号与信息处理]