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面向5G多波束应用的紧凑宽带Rotman透镜设计

付宇璠 周东方 张毅 吕大龙 张德伟 许飞

付宇璠, 周东方, 张毅, 等. 面向5G多波束应用的紧凑宽带Rotman透镜设计[J]. 强激光与粒子束, 2021, 33: 033006. doi: 10.11884/HPLPB202133.200291
引用本文: 付宇璠, 周东方, 张毅, 等. 面向5G多波束应用的紧凑宽带Rotman透镜设计[J]. 强激光与粒子束, 2021, 33: 033006. doi: 10.11884/HPLPB202133.200291
Fu Yufan, Zhou Dongfang, Zhang Yi, et al. Design of compact wideband Rotman lens for 5G multibeam application[J]. High Power Laser and Particle Beams, 2021, 33: 033006. doi: 10.11884/HPLPB202133.200291
Citation: Fu Yufan, Zhou Dongfang, Zhang Yi, et al. Design of compact wideband Rotman lens for 5G multibeam application[J]. High Power Laser and Particle Beams, 2021, 33: 033006. doi: 10.11884/HPLPB202133.200291

面向5G多波束应用的紧凑宽带Rotman透镜设计

doi: 10.11884/HPLPB202133.200291
基金项目: 核高基重大专项(2013ZX01010003-004)
详细信息
    作者简介:

    付宇璠(1993—),男,硕士研究生,从事毫米波多波束天线阵列研究;fuyufandeyouxiang@163.com

  • 中图分类号: TN822

Design of compact wideband Rotman lens for 5G multibeam application

  • 摘要: 提出了一种基于等光程差原理设计的紧凑宽带Rotman透镜波束赋形网络,用于5G毫米波通信的天线阵列多波束实现。首先,详细介绍了Rotman透镜的基本原理;然后,利用二等分功分器替代传统的单端口馈电模式,产生高定向波束,降低相邻端口处的能量损失以及透镜内部能量的散射;最后利用切比雪夫多枝节匹配变换器,优化原有的锥形阵列输出端口,在保证宽频带的条件下,缩短原有匹配端口尺寸,使得透镜整体尺寸减少20%,实现了Rotman透镜的紧凑性。改进模型的实测结果表明,该透镜工作频带为16.5~33.8 GHz,其中在17.2~32 GHz,S11优于15 dB,扫描角度为±30°。该透镜结构简单紧凑,能够有效地为相邻阵元提供稳定的相位差信号,很好地实现5G毫米波阵列多波束的目标。
  • 图  1  Rotman透镜几何结构

    Figure  1.  Rotman lens geometry

    图  2  Rotman透镜的结构布局对比

    Figure  2.  Structural layout comparison of Rotman lenses

    图  3  Rotman透镜的结构设计

    Figure  3.  Layouts of Rotman lens

    图  4  表面电流分布

    Figure  4.  Comparison of distribution of the electric current between traditional lens and proposed Rotman lens

    图  5  提出模型与原始模型的S11参数

    Figure  5.  S11 parameters of the proposed model and the original model

    图  6  Rotman透镜实物图

    Figure  6.  Photo of the Rotman lens

    图  7  S11参数的仿真与测量结果

    Figure  7.  Simulation and measurement results of S11 parameters

    图  8  S参数相位

    Figure  8.  S-parameters of the phase

    图  9  Rotman透镜馈电时阵列辐射方向图

    Figure  9.  Radiation patterns of antenna array fed by the Rotman lens

    表  1  切比雪夫多节匹配参数

    Table  1.   Parameters of Chebyshev multi-section matching

    Z1Z2/ΩZ3Z4
    23.7128.9937.8146.23
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-10-22
  • 修回日期:  2021-01-23
  • 网络出版日期:  2021-03-30
  • 刊出日期:  2021-03-05

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