微波波段涡旋波束的多模式集成与动态调控研究进展

袁乐眙; 杨德生; 刘云飞; 张狂

doi:10.11999/JEIT231211

微波波段涡旋波束的多模式集成与动态调控研究进展

doi: 10.11999/JEIT231211

哈尔滨工业大学电子与信息工程学院哈尔滨 150001

基金项目: 国家自然科学基金(62171165, 6230011745)，中国博士后面上基金(2022M710944)，黑龙江省博士后基金(LBH-Z22017)

详细信息

作者简介:
袁乐眙：女，博士，讲师，研究方向为人工电磁媒质、涡旋波束的高阶模式集成、微波段超构透镜等

杨德生：男，博士生，研究方向为OAM高纯度激发、OAM通信链路及系统设计等

刘云飞：男，博士生，研究方向为可重构超表面器件、微波波束赋形技术等

张狂：男，博士，教授，研究方向为超构表面、电磁场与微波、天线的设计与研究等

通讯作者:
张狂　zhangkuang@hit.edu.cn

中图分类号: TN919.8
计量
- 文章访问数: 241
- HTML全文浏览量: 81
- PDF下载量: 26
- 被引次数: 0
出版历程
- 收稿日期: 2023-11-01
- 修回日期: 2024-04-08
- 网络出版日期: 2024-05-10
- 刊出日期: 2024-05-30

Research Progress in Multi-Mode Integration and Dynamic Regulation of Microwave Band Vortex Beams

School of Electronic and Information Engineering, Harbin Insititute of Technology, Harbin 150001, China

Funds: The National Natural Science Foundation of China (62171165, 6230011745), China Postdoctoral Science Foundation (2022M710944), Postdoctoral Fellowships in Heilongjiang Province (LBH-Z22017)

摘要

摘要: 该文回顾并总结了近期关于涡旋波束多模式集成与动态调控的研究成果与进展。首先从无源超表面透镜出发，利用传播相位与几何相位的综合调控作用，在单一超表面平台上实现了分数模涡旋波束的高纯度激发。更进一步，基于无源式超表面的多模式涡旋集成理论及方法，通过在超表面单元结构中加载变容二极管等有源可调谐式器件，实现涡旋波束的动态切换与人工调控。并在此基础上，对基于超表面的涡旋通信系统实现信道建模，并对涡旋通信系统的性能做出了理论分析与评估，为提高现代通信系统信道容量及信息传输速率打下理论基础。
- 微波超表面 /
- 涡旋波束 /
- 多模式OAM集成 /
- 可重构调控 /
- OAM通信
Abstract: The recent researches on vortex beam multimode integration and dynamic regulation are summarized in this article. Starting from the passive metasurface lens, utilizing the comprehensive control effect of propagation phase and geometric phase, fractional modes of vortex beam with high-purity is realized on a single metasurface platform. Furthermore, based on the theory and method about multimode vortex beam integration by using passive metasurfaces, active tunable electromagnetic devices such as varactors are loaded into the metasurface unit cell to adopt dynamic switching and manual regulation of vortex beams. On this basis, a theoretical analysis and evaluation of the performance of vortex communication systems based on metasurface is conducted through channel modeling, laying a theoretical foundation for improving the channel capacity and information transmission rate of modern communication systems.
- Microwave metasurface /
- Vortex beam /
- Multi-mode OAM integration /
- Reconfigurable regulation /
- OAM wireless communication

HTML全文

图 1 多层级联超表面单元结构^[13]

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图 2 超构透镜的加工样品实物照片

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图 3 分数模式涡旋波束在xoy平面内的能量分布、电场分布和相位分布

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图 4 分数OAM模式的纯度分析

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图 5 超表面单元结构

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图 6 超表面单元特性

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图 7 不同模态下的远场方向图

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图 8 不同模态下的纯度

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图 9 不同模态下的远场测试方向图及近场相位分布

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图 10 涡旋通信的整体架构

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图 11 跳模通信的通信性能

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图 12 OAM通信的在AWGN信道下的通信性能

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图 13 纯度为0.6时的OAM通信性能

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表 1 选取超表面单元具体参数

序号	变容二极管对应电容值(pF)	离散相位(°)	连续相位取值范围(°)
1	0.02	0	0～90
2	0.09	90	90～180
3	0.12	180	180～270
4	0.17	270	270～360

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表 2 该文研究工作与相关研究工作对比表

	天线数	馈电网络	OAM模式数	OAM纯度(平均)	带宽(%)	是否可调
UCA^[3]	8	有	1	0.8	9	不可调
SPP^[5]	1	无	1	(无数据)	0.3	不可调
Metasurface^[10]	1	无	1	0.82	10	不可调
RIS (该文)	1	无	任意模式	>0.75	10	任意可调

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参考文献(16)

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