毫米波宽带高增益介质超透镜天线设计  

Design of a Millimeter-wave Metalens Antenna with Wideband and High Gain Characteristics

作　　者：彭麟[1] 赵智华 廖欣[1] 郑天成 姜兴[1] PENG Lin;ZHAO Zhihua;LIAO Xin;ZHENG Tiancheng;JIANG Xing(Key Laboratory of Cognitive Radio and Information Processing,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学认知无线电与信息处理省部共建教育部重点实验室,广西桂林541004

出　　处：《电讯技术》2022年第4期533-539,共7页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61661011);广西研究生教育创新计划项目(YCSW2020151);桂林电子科技大学研究生优秀学位论文培育项目(18YJPYSS06)。

摘　　要：基于相位补偿原理设计了一款全介质超透镜,同时使用喇叭天线作为馈源对透镜进行馈电。通过改变介质单元的高度和介质孔的深度实现了足够的相位补偿范围。该透镜共有506个单元,口径尺寸为44.6 mm×46.6 mm,该传输阵天线的焦径比为1。天线使用全介质结构,因此使用3D打印技术加工该全介质透镜,可以降低加工成本。仿真与实测结果显示,在82 GHz该介质超透镜天线增益达到29.7 dBi,口径效率为52.55%,1 dB增益带宽为20.5%(73.2~90 GHz)。An all-dielectric metalens antenna operating at the millimeter-wave is proposed based on phase compensation principle.A horn antenna is used as the source to feed the lens.To achieve large phase compensation,the height of the dielectric unit and the depth of the hole are changed.The lens is composed of 506 units with an aperture size of 44.6 mm×46.6 mm.The focus-to-diameter ratio(F/D)of the lens is 1.Due to the all-dielectric structure,3D printing technology can be used to process the lens to reduce the processing cost.The simulation and measurement results show that the proposed antenna has a peak gain of 29.7 dBi at 82 GHz.In addition,the proposed design achieves a 1 dB gain bandwidth of 20.5%and a peak aperture efficiency of 52.55%(73.2~90 GHz).

关 键 词：高增益天线 全介质超透镜天线 毫米波 宽带 3D打印 

分 类 号：TN821[电子电信—信息与通信工程]