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, ShulabhS
• 金额: $ 4.37万
• 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: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=752580
• 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.

该提案针对智能电磁（EM）反射器表面和相关智能反射器的原型开发，作为微波（例如8-12 GHz）和毫米波频段（例如24-30 GHz）中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通过电子方式实时配置，从而对反射波的幅度、相位和偏振进行完全独立的控制，即完整的波束形成系统。所提出的技术是基于二维超材料（或超表面），由独特几何排列的二维电磁耦合谐振器阵列组成，这些谐振器装载相移和幅度调谐元件，通过机载软件模块提供前所未有的表面反射特性控制。通过编程控制结构，可以实时配置表面/反射射线的电磁反射状态。由于所提出的反射器提供了对反射相位和振幅的独立控制，因此实际上可以解锁无限数量的波变换，而不是形成许多实际系统核心的最先进的只有相位的反射表面，从典型的城市和城郊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。