一种L-Ku波段的超宽带端射天线设计与研究  

Design and Research of an L-Ku Ultra-wideband End-fire Antenna

作　　者：李力 曹群生[1] 赵海明[2] 白明涛 LI Li;CAO Qunsheng;ZHAO Haiming;BAI Mingtao(College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;Beijing Huahang Radio Measurement&Research Institute,Beijing 100013,China)

机构地区：[1]南京航空航天大学电子信息工程学院,南京211106 [2]北京华航无线电测量研究所,北京100013

出　　处：《微波学报》2024年第5期85-90,共6页Journal of Microwaves

摘　　要：本文设计了一种可工作在L-Ku波段的超宽带端射天线。该天线由辐射缝隙印制板、反射腔体、腔体支撑材料等组成。通过在天线的辐射印制板下方增加腔体和负载匹配方法可抑制后向辐射;增加槽间的缝隙单元可调节相邻天线单元的幅度和相位匹配从而提升端射性能;在天线顶端采用共面波导转换同轴连接器的方式可实现阻抗匹配馈电。对所提出的超宽带端射天线进行了辐射性能的仿真分析,其结果表明,该天线可实现18倍频程带宽,并具有性能优良的端口匹配和端射特性,S11小于-10 dB,E面最大辐射方向与水平面夹角小于30°。测试结果表明,其与仿真数据有较好的一致性。An ultra-wideband end-fire antenna that can operate in the L-Ku band is presented in this paper.The antenna is consisted of radiation gap printed plate,reflective cavity,and cavity support material,etc.The backward radiation can be suppressed by adding a cavity and load matching below the radiation printed board of the antenna.Adding slot unit between the slot can adjust the amplitude and phase matching of adjacent antenna units to enhance the end-fire performance.The impedance matching feeding can be realized by using coplanar waveguide conversion coaxial connector at the top of the antenna.A simulation analysis of the adiation performance of the proposed ultra-antenna end-fire antenna is conducted,and the results show that the antenna can achieve 18-octave bandwidth and has excellent port matching and end-fire characteristics,S 11 is less than-10 dB,and the angle between E-plane and horizontal plane is less than 30°.The measured result indicates that it has good consistency with the simulation results.

关 键 词：超宽带端射天线 L-Ku波段 大倍频程带宽 低剖面 共面波导 

分 类 号：TN822.8[电子电信—信息与通信工程]