一种弹载宽带全向天线及其馈电方式  

A Missile-borne Broadband Omnidirectional Antenna andIts Feeding Method

作　　者：朱林寰 苏飞 叶文娟 张晓冲 邢光龙[3] ZHU Linhuan;SU Fei;YE Wenjuan;ZHANG Xiaochong;XING Guanglong(State-owned Wuhu Machinery Factory,Wuhu 241007,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China;School of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]国营芜湖机械厂,安徽芜湖241007 [2]中国电子科技集团公司第五十四研究所,河北石家庄050081 [3]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《无线电工程》2023年第7期1706-1711,共6页Radio Engineering

基　　金：国家自然科学基金(62106242)。

摘　　要：针对遥控测控领域对弹载全向天线的技术需求,提出了一种特殊的印刷偶极子全向天线及其宽带馈电方式。左右2个辐射振子片分别位于印制板两面,通过左辐射振子向一侧延伸带有匹配枝节的微带传输线,巧妙地通过金属化过孔连接了电缆的内芯,将电缆金属外皮另一侧的辐射片焊接在一起。通过这种新颖的馈电方式改善了天线的阻抗匹配,有效地拓展了天线带宽,使得天线在小直径下(5 mm)实现了1.42~2.02 GHz宽频带全向辐射,相对带宽达到34.88%,大大高于相同直径普通偶极子的相对带宽,且在带内增益大于1.6 dB,水平面方向图的不圆度小于1.5 dB。该天线具有宽频带、结构简单紧凑、体积小、质量轻和易加工装配等优点,具有良好的工程应用前景。Based on the technical requirements of the missile-borne omnidirectional antenna in the telemetry and remote control field,a special printed dipole omnidirectional antenna and its broadband feeding method are proposed.The left and right radiating vibrators are located on both sides of the printed board respectively,and a microstrip transmission line with matching branches is extended to one side through the left radiating vibrator.The inner core of the cable is cleverly connected through metallized vias,and the metal sheath of the cable is connected.The radiators on the other side are welded together.Through this novel feeding method,the impedance matching of the antenna is improved,and the bandwidth of the antenna is effectively expanded,so that the antenna can achieve 1.42~2.02 GHz broadband omnidirectional radiation with a small diameter(5 mm),and the relative bandwidth reaches 34.88%,which is much higher than the relative bandwidth of ordinary dipoles with the same diameter.In addition,the in-band gain is greater than 1.6 dB,and the out-of-roundness of horizontal plane pattern is less than 1.5 dB.The antenna has the advantages of wide broadband,simple and compact structure,small size,light weight,easy machining and assembly,and has a good engineering application prospect.

关 键 词：全向天线 弹载天线 宽带 小型化 

分 类 号：TN82[电子电信—信息与通信工程]