一种基于缝隙电磁耦合馈电的印刷振子阵列天线研究  

Research on a Printed Dipole Array Antenna Fed by the Slot Electromagnetic Coupling

作　　者：陈伟[1,2] 张敏 郭玉霞[1] 崔炳喆[1,2] 王岩岩[1] Chen Wei;Zhang Min;Guo Yuxia;Cui Bingzhe;Wang Yanyan(China Airborne Missile Academy,Luoyang 471009,China;Aviation Key Laboratory of Science and Technology on Airborne Guided Weapons,Luoyang 471009,China;School of Information Science and Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China)

机构地区：[1]中国空空导弹研究院,河南洛阳471009 [2]航空制导武器航空科技重点实验室,河南洛阳471009 [3]哈尔滨工业大学(威海)信息科学与工程学院,山东威海264209

出　　处：《航空兵器》2021年第1期93-97,共5页Aero Weaponry

基　　金：航空科学基金项目(201901077005);航空工业创新基金项目(2014C01407R)。

摘　　要：本文研究了一种采用缝隙电磁耦合馈电的印刷振子阵列天线。该阵列天线使用对称印刷振子阵列作为辐射器,通过引入印刷平面巴伦对平衡振子辐射器进行馈电;基于缝隙电磁耦合的方式对印刷巴伦进行激励,馈电的功分网络布置在金属地板下方以减少电磁耦合干扰。设计了电磁耦合结构和尺寸参数,对4单元印刷振子直线阵列天线进行了仿真和优化,实现了预期阻抗匹配要求。仿真结果表明:在18.7~19.2 GHz频率范围内,该印刷振子阵列天线的电压驻波比小于2,在中心频率点上的增益约为8.9 dBi,E面和H面上的波束宽度分别约为21°和43°。对设计的天线进行加工测试,测试结果验证了该印刷振子阵列天线方案的有效性。本文提出的天线具有结构简单、效率高和电磁兼容性好的特点,适用于飞行器载体平台应用。A kind of printed dipole array antenna fed by slot electromagnetic coupling is researched.The printed symmetrical dipoles are used to be the radiators which are fed by printed planar Balun.Meanwhile,the printed planar Balun is stimulated by the slot electromagnetic coupling,and the feeding power divider network is placed under the metal ground in order to diminish the electromagnetic coupling interferences.The electromagnetic coupling structure and parameters are designed and a linear printed dipole array antenna with four elements is simulated and optimized to meet the anticipated impedance.The simulation results show that the voltage standing wave ratio(VSWR)is less than 2 within the frequency range of 18.7~19.2 GHz and the gain is about 8.9 dBi at the center frequency.The beam widths at E-plane and H-plane are about 21°and 43°respectively.The designed antenna is fabricated and measured,and the measurement results verify the effectiveness of the designed antenna scheme.The proposed antenna has the characteristics of simple structure,high efficiency and good electromagnetic compatibility,which is suitable for aircraft carrier platform application.

关 键 词：印刷振子天线 阵列天线 电磁耦合馈电 辐射方向图 电压驻波比 

分 类 号：TJ765.22[兵器科学与技术—武器系统与运用工程] TN82[电子电信—信息与通信工程]