Smart Reflectarray System based on Metamaterial Technology

基于超材料技术的智能反射阵列系统

• 批准号: 567597-2021
• 负责人: Gupta, Shulabh
• 金额: $ 9.11万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=728718
• 关键词: Smart; Reflectarray; System; based; Metamaterial

This proposal is directed to prototype development of a Smart Electromagnetic (EM) Reflector surface and a related Smart Reflectarray as an advanced version of standard high-gain parabolic reflectors in the microwave (e.g. 8-12 GHz) and millimeter-wave band (e.g. 24-30 GHz). The reflection characteristics of the Smart EM Reflector can be electronically configured in real-time to provide complete and independent control over the amplitude, phase and polarization of the reflected wave, i.e. complete beam-forming system. The proposed technology is based on 2D Metamaterials (or metasurfaces) consisting of a 2D array of unique geometrical arrangement of electromagnetically coupled resonators, which are loaded with phase shifting and amplitude tuning elements to provide unprecedented control of the reflection characteristics of the surface through an on-board software module. The structures are programmatically controlled such that the EM reflection state of the surface/reflectarray can be configured in real time. Since the proposed reflector provides independent control of reflection phase and amplitude, a virtually unlimited number of wave transformations are unlocked, as opposed to state-of-the-art phase-only reflection surfaces that form the core of many practical systems ranging from wireless communication in typical urban and sub-urban environments to satellite tracking and near-Line-of-Sight (LOS) microwave backhaul and point-to-point links.

该提议针对智能电磁（EM）反射器表面和相关智能反射阵列的原型开发，作为微波（例如，8-12 GHz）和毫米波频带（例如，24-30 GHz）中的标准高增益抛物面反射器的高级版本。 智能电磁反射器的反射特性可以实时电子配置， 完整和 独立控制反射波的振幅、相位和偏振，即完整的波束形成系统。所提出的技术基于2D超材料（或超材料表面），该超材料（或超材料表面）由电磁耦合谐振器的独特几何布置的2D阵列组成，该电磁耦合谐振器加载有相移和振幅调谐元件，以通过板载软件模块提供对表面的反射特性的前所未有的控制。这些结构被编程控制，使得表面/反射阵列的EM反射状态可以被真实的实时配置。由于所提出的反射器提供反射相位和振幅的独立控制，因此实际上无限数量的波变换被解锁，这与形成从典型城市和郊区环境中的无线通信到卫星跟踪和近视距（LOS）微波回程和点对点链路的许多实际系统的核心的最先进的仅相位反射表面相反。