小型化宽带宽波束磁电偶极子天线的设计  

Design of a Miniaturized Broadband Magneto-electric Dipole Antenna with Wide Beamwidth

作　　者：隋晓杰 席敬波 华盛 常雷[3] 张建强[3] SUI Xiao-jie;XI Jing-bo;HUA Sheng;CHANG Lei;ZHANG Jian-qiang(Unit 91033 of PLA,Qingdao Shandong 266071,China;Hangzhou Military Representative Office,Military Representative Bureau of Army Equipment Department in Nanjing,Hangzhou Zhejiang 310011,China;No.36 Research Institute of CETC,Jiaxing Zhejiang 314033,China)

机构地区：[1]中国人民解放军91033部队,山东青岛266071 [2]陆军装备部驻南京地区军事代表局驻杭州地区军事代表室,浙江杭州310011 [3]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2021年第3期43-47,共5页Communication Countermeasures

摘　　要：提出了一种通过同轴巴伦馈电的具有宽波束宽度的宽带磁电偶极子天线。该天线包含一个寄生贴片、一个U形反射器和一对弯折金属臂。寄生贴片放置在弯折金属臂(作为电偶极子)的上方,作为引向器使用,以改善天线的阻抗匹配性能。U形反射器、一对弯折金属臂和寄生贴片的组合等效为磁偶极子。通过采用磁电偶极子,在H面获得了很宽的波束宽度和阻抗带宽。仿真结果显示VSWR<2的阻抗带宽为797MHz~3000MHz(116%)。在H面,波束宽度位于122°和171°之间的带宽为797MHz~3000MHz(116%),而在E面,波束宽度位于79°和156°之间的带宽为797MHz~2500MHz(103.3%)。天线的整体尺寸为0.239λ_(L),×0.177λ_(L)×0.104λL(λ_(L)为起始频率对应的自由空间波长)。A broadband magneto-electric(ME)dipole antenna with wide beamwidth fed by a coaxial balun is proposed.This antenna consists of a parasitic patch,a U-shaped reflector,and a pair of folded metal arms.The parasitic patch located above the folded metal arms(as an electric dipole)functions as a director.The combination of the U-shaped reflector,the pair of folded metal arms and the parasitic patch acts as a magnetic dipole.By introducing the ME dipole,wide beamwidth in the H-plane and a broadband impedance bandwidth are achieved.Simulated results show that an impedance bandwidth of 797-3000 MHz(116%)for VSWR≤2 is obtained.The beamwidth is between 122°and 171°in the band of 797-3000 MHz(116%)in the H-plane,and between 79°and 156°in the band of 797-2500 MHz(103.3%)in the E-plane.The overall size of the antenna is 0.239λ_(L),0.173λ_(L)×0.106λ_(L),(λ_(L),is the free-space wavelength at the starting frequency).

关 键 词：磁电偶极子 宽带 小型化 宽波束 

分 类 号：TN82[电子电信—信息与通信工程]