| 面向5G多波束应用的紧凑宽带Rotman透镜设计 |
| |
| 引用本文： | 付宇璠,周东方,张毅,吕大龙,张德伟,许飞.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(3):033006-1-033006-6. |
| |
| 作者姓名： | 付宇璠 周东方 张毅 吕大龙 张德伟 许飞 |
| |
| 作者单位： | 1.战略支援部队 信息工程大学 信息系统工程学院，郑州 450001 |
| |
| 基金项目： | 核高基重大专项（2013ZX01010003-004） |
| |
| 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。
|
| 关 键 词： | Rotman透镜 宽带 多波束 毫米波 阵列 |
| 收稿时间： | 2020-10-22 |
Design of compact wideband Rotman lens for 5G multibeam application |
| |
| Affiliation: | 1.PLA Strategic Support Force Information Engineering University, Zhenzhou 450001, China2.PLA 31437 Force, Shenyang 110000, China |
| |
| Abstract: | In this paper, a compact broadband Rotman lens beamforming network based on equal optical path difference is proposed. The beamforming network is intended for applications in a multi-beam antenna array of 5G millimeter-wave (mm-wave) communication. Firstly, the theoretical design of the Rotman lens is introduced in detail. A power divider is used to replace the standard single-port feeding mode to generate a high-directional beam, reducing the scattering of the lens’ internal energy and the energy loss at adjacent ports. The Chebyshev multi-stub matching converter is used to optimize the original tapered array output port. To ensure a wide frequency band, the original matching port size is reduced, and the overall size of the lens is reduced by 20%. Measurement results of the improved model, show that the working frequency band of the lens is 16.5?33.8 GHz, of which S11 is better than 15 dB at 17.2?32.0 GHz, and the scanning angle is ±30°. The lens has a simple and compact structure, can effectively provide a stable phase difference signal for adjacent array elements, and achieve the goal of 5G millimeter-wave array multi-beam. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
|
点击此处可从《强激光与粒子束》下载全文 |
|
