摘要
针对遥测遥控领域对宽频带宽波束低仰角覆盖天线的技术需求,设计并制作了一款宽带宽波束天线,在辐射片下折腔振子基础上,采用在天线口面横向加载双扼流环结构,展宽了天线的波束和稳定了天线的宽波束性能;在天线口面纵向加载匹配盘组结构,展宽了天线的带宽及优化了天线的电压驻波比;在金属反射腔内添加金属隔离柱结构,改善了天线的圆极化轴比及方向图特性。该天线很容易实现双圆极化,工作频带为1.25~2.5 GHz,电压驻波比(Voltage Standing Wave Ratio,VSWR)≤2.0,在2∶1带宽内天线增益大于0 dBi的波束宽度不小于132°,且方向图在整个带宽内基本保持稳定。
To meet the technical requirements for broadband,wide-beam and low elevation coverage antenna in the field of telemetry and telecontrol,a broadband and wide-beam antenna is designed and fabricated.A double-choke-ring structure is loaded horizontally on the antenna aperture on the basis of the lower fold cavity vibrator of the radiation plate,which broadens the antenna beam and stabilizes its wide-beam performance.A matching disk structure is loaded vertically on the antenna aperture,which extends the antenna bandwidth and optimizes the voltage standing wave ratio.A metal isolation column structure is added into the metal reflection cavity to improve the circular polarization axis ratio and the pattern characteristics of the antenna.The antenna can easily realize double circular polarization,the operating frequency band range is 1.25~2.5 GHz,Voltage Standing Wave Ratio(VSWR)≤2.0,the beamwidth with antenna gain greater than 0 dBi is not less than 132°in 2∶1 bandwidth,and the pattern is basically stable in the whole bandwidth.
作者
张晓冲
涂海洋
马剑南
李勇
刘廷龙
ZHANG Xiaochong;TU Haiyang;MA Jiannan;LI Yong;LIU Tinglong(The 54th Research Institute of CETC,Shijiazhuang 050081,China;Hebei Branch,China Communications System Co.,Ltd.,Shijiazhuang 050081,China;The Military Representative Office of the Air Force Equipment Department in Shijiazhuang,Shijiazhuang 050081,China;School of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China)
出处
《无线电工程》
北大核心
2023年第12期2858-2863,共6页
Radio Engineering
基金
国家自然科学基金(61671401)。
