一种基于微带线-共面带状线巴伦馈电的Vivaldi天线研究  

Research on a Vivaldi Antenna Fed by a Microstrip-Coplanar Strip Balun

作　　者：宋立众 姚国国[2,3] 霍纪兵 Song Lizhong;Yao Guoguo;Huo Jibing(School of Information Science and Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China;China Airborne Missile Academy,Luoyang,Luoyang 471009,China;Aviation Key Laboratory of Science and Technology on Airborne Guided Weapons,Luoyang 471009,China)

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

出　　处：《航空兵器》2018年第5期58-62,共5页Aero Weaponry

基　　金：航空科学基金项目(20160177005);哈尔滨工业大学(威海)教育教学改革研究项目(BK201610)

摘　　要：本文研究了一种基于微带线-共面带状线巴伦馈电的Vivaldi天线。采用单层介质基板,设计了一种微带线-槽线-共面带状线的巴伦结构,天线辐射部分采用指数渐变的Vivaldi天线,设计的馈电巴伦和天线辐射结构方便连接,整个天线具有结构简单、易于设计的优点。采用全波电磁仿真技术,对微带线-共面带状线巴伦进行优化设计,使之满足天线辐射器的阻抗匹配要求。仿真结果表明,在2. 5～3 GHz的频率范围内,设计的天线回波损耗约小于-10 dB,增益大于4 dBi,具有较高的效率。对设计的天线进行了加工和测试,结果表明了设计的有效性。本文设计的Vivaldi天线可用作相控阵天线的单元,具有实际工程意义。A kind of Vivaldi antenna fed by a microstrip-coplanar strip （CPS） balun is researched. A microstrip to slot-line to CPS balun is designed by using a single layer substrate. The antenna radiator adopts a exponentially tapered Vivaldi antenna. The designed balun and antenna radiation structure are easily connected, and the whole antenna has the advantages of simple structure and easy design. The microstrip-CPS balun is designed and optimized through the full wave electromagnetic simulation technique, which can realize the impedance matching with the antenna radiator. The simulation results reveal that the return loss of designed antenna is less than - 10 dB, the gain is higher than 4 dBi, and the high efficiency is achieved within the frequency range from 2.5 GHz to 3 GHz. The designed antenna is fabricated and tested, and the experimental results indicate that the design is effective. The designed Vivaldi antenna can be used as the element of the phased array antenna, which is meaningful in Engineering.

关 键 词：VIVALDI天线 巴伦 天线仿真 宽波束 方向图 回波损耗 

分 类 号：TJ765.331[兵器科学与技术—武器系统与运用工程] TN821[电子电信—信息与通信工程]