一种超宽带双极化紧耦合全金属阵列天线设计  

Design of an Ultra-wideband Dual-polarized Tightly-coupled All-metal Antenna

作　　者：郭子放 韩邦杰 GUO Zifang;HAN Bangjie(The 54th Research Institute of CETC,Shijiazhuang 050081,China;The Military Representative Office of the Air Force Equipment Department in Baoding,Baoding 071028,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]空装驻保定地区军事代表室,河北保定071028

出　　处：《无线电工程》2025年第4期841-847,共7页Radio Engineering

基　　金：国家自然科学基金(U20B2071)。

摘　　要：针对干扰阵列天线大带宽、模块化、承载高功率的需求,提出了一种超宽带紧耦合双极化金属天线,天线单元采用全金属竖直偶极子形式,通过同轴内芯转双线结构的过度巴伦进行直接馈电,紧耦合天线单元之间引入了金属耦合柱,解决了天线单元频段内谐振频点问题,拓宽了天线带宽,实现了紧耦合天线双极化、模块化的设计。全金属的设计为工程应用中大功率干扰提供了技术基础。对天线完成仿真分析后,加工了8×8阵列进行试验验证,实测结果表明,天线在500~2 500 MHz能够达到85%的辐射效率,可以实现±60°的大角度扫描,验证了该天线设计的有效性。To address the urgent requirements of wide bandwidth,modularity,and high-power handling for jamming array antennas,an ultra-wideband tightly coupled dual-polarized metallic antenna is proposed.The antenna unit employs an all-metal vertical dipole structure,directly fed through a transition balun converting from a coaxial inner conductor to a twin-line configuration.Metallic coupling pillars are integrated between tightly coupled antenna elements to eliminate resonant frequency issues within the operating band,thereby extending the bandwidth and enabling a dual-polarized modular design.The all-metal architecture provides a technical foundation for high-power jamming in practical engineering applications.After simulation and analysis,an 8×8 array prototype is fabricated and experimentally validated.Measurement results demonstrate that the antenna achieves 85% radiation efficiency across 500~2 500 MHz,supports ±60°wide-angle beam scanning,and confirms the validity of the proposed design.

关 键 词：超宽带 紧耦合 双极化 模块化 全金属 

分 类 号：TN821[电子电信—信息与通信工程]