偶极子对激发的宽带平面端射高增益天线  

Wideband Planar Endfire High-Gain Antenna Excited by Paired Dipoles

作　　者：王友保[1] 唐佑铭 赵刘易斯 马君鑫 张天豪 WANG You-bao;TANG You-Ming;ZHAOLIU Yi-si;MA Jun-xin;ZHANG Tian-hao(School of Eleetrouics and Information Engineer,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《中国电子科学研究院学报》2024年第3期195-203,共9页Journal of China Academy of Electronics and Information Technology

基　　金：国家自然科学基金资助项目(62301262)。

摘　　要：文中提出了一款单向辐射特性的微带缝隙结构双偶极子宽带天线。该天线由阶梯型缝隙结构、共面双偶极子和5组引向器构成。阶梯型缝隙结构用于改善阻抗匹配,拓展了天线的带宽;共面双偶极子改善了天线的辐射特性;引向器提高了天线的增益。仿真和实测表明,该天线的相对带宽为66.4%(5.78 GHz~11.53 GHz),带内前后比为15.7 dB~27.4 dB、增益为8.4 dBi~11.9 dBi,并且天线的交叉极化低、辐射方向图稳定。该天线的良好性能使其在无线通信和雷达领域的应用具有极强的吸引力。A broadband antenna with unidirectional radiation characteristics is proposed,featuring a microstrip slot structure double dipole.The antenna comprises a stepped slot structure,a coplanar double dipole,and five sets of deflectors.The stepped slot structure is used to enhance impedance matching and expand the bandwidth of the antenna.The coplanar double dipole improves the antenna's radiation characteristics,while the deflector increases its gain.Simulation and measurement show that the antenna's relative bandwidth is 66.4%(5.78 GHz~11.53 GHz),the in-band front-to-back ratio 15.7 dB~27.4 dB,the gain 8.4 dBi~11.9 dBi,the cross polarization of the antenna low and the radiation pattern stable.The excellent performance of the antenna makes it highly attractive for applications in wireless communication and radar.

关 键 词：端射天线 高前后比 低交叉极化 宽频带 高增益 

分 类 号：TN822[电子电信—信息与通信工程]