Properties of Orbital Angular Momentum (OAM) Waves with Respect to Wireless Communication in Complex Environments and to Electromagnetic Interference

轨道角动量 (OAM) 波对于复杂环境中无线通信和电磁干扰的特性

• 批准号: 432301241
• 负责人: Professor Dr. Christian Schuster, since 8/2020
• 金额: --
• 依托单位: School of Engineering and Physical Sciences
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/432301241?language=en
• 关键词: Properties; Orbital; Angular; Momentum; OAM

The proposed project here aims to contribute scientifically in the area of wireless communication based on the Orbital Angular Momentum (OAM) property of electromagnetic waves in the lower part of the microwave spectrum (up to 10 GHz). OAM carrying waves have been explored and used in the past mostly in the optical regime. Only about ten to fifteen years ago utilization for wireless communication at “radio frequencies” started to be explored and is still being explored. While it could be shown during this time that OAM antennas are in principle equivalent to MIMO antennas and, hence, there is no real bandwidth advantage over existing technology there are still many open scientific questions related to OAM waves generation, propagation, and reception. Questions being explored in this project pertain both to the fundamental electromagnetic perspective (reflection, diffraction, scattering, shielding, superposition/interference etc.) as well as to the more applied communication engineering perspective (individual antenna choice, array design, mode isolation, impedance matching, useful range of distances, bandwidth considerations, behavior in complex environments and environments with aggressors etc.). To allow this, the project proposes a combination of numerical and experimental approaches. Numerical simulations will be performed an in-house tool based on the method of moments. In parallel, prototypes of OAM antennas will be designed and tested in an antenna measurement chamber at TUHH, the results of which will be compared to results of simulations for validation. The specific objectives of project are as follows: (1) Better understanding and description of fundamental electromagnetic properties of OAM waves such as reflection, diffraction, scattering, shielding, superposition/interference as well as behavior in complex environments leading to multi-path propagation. (2) Generation of guidelines for OAM antenna array design both with respect to the contribution from the individual antenna element as well as the contribution of the array design. (3) Quantification and evaluation of OAM based communication in complex environments and subject to electromagnetic interference. (4) Development of a measurement procedure for OAM antenna arrays and OAM based communication using an existing antenna measurement system at TUHH and validation of selected numerical results. We are convinced that the results of this project will also help to further elucidate the practical, engineering side of the question whether OAM based communication has the potential for a wider range of applications or not.

这里提出的项目旨在基于微波频谱下部（高达10 GHz）电磁波的轨道角动量（OAM）特性，在无线通信领域做出科学贡献。过去主要用于光学领域。仅在大约十到十五年前，人们才开始探索并仍在探索 OAM 天线的应用。原则等价MIMO 天线，因此与现有技术相比并没有真正的带宽优势，仍然存在许多与 OAM 波生成、传播和接收相关的开放科学问题。衍射、散射、屏蔽、叠加/干扰等）以及更应用的通信工程视角（单个天线选择、阵列设计、模式隔离、阻抗匹配、有用距离范围、带宽考虑、行为为了实现这一点，该项目提出了基于矩量法的内部工具结合数值模拟和 OAM 天线原型。将在TUHH的天线测量室中进行设计和测试，其结果将与仿真结果进行比较以进行验证。该项目的具体目标如下：（1）更好地理解和描述OAM波的基本电磁特性。这样的如反射、衍射、散射、屏蔽、叠加/干扰以及复杂环境中导致多路径传播的行为 (2) 生成 OAM 天线阵列设计指南，包括单个天线元件的贡献。 (3) 复杂环境和电磁干扰下基于 OAM 的通信的量化和评估 (4) 使用现有天线测量系统开发 OAM 天线阵列和基于 OAM 的通信的测量程序。 TUHH 和选定数值结果的验证我们相信，该项目的结果也将有助于进一步阐明基于 OAM 的通信是否具有更广泛应用潜力的实际、工程方面的问题。