Smart Reflectarray System based on Metamaterial Technology

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。拟议的技术是基于2 d超材料(或metasurfaces)组成的二维数组独特的几何布置的电磁耦合谐振器,而含有相位和振幅调整元素转移到提供前所未有的控制表面的反射特性通过车载软件模块。结构以编程的方式控制这样的电磁反射状态表面/ reflectarray可以实时配置。自该反射器提供独立控制的反射相位和振幅,几乎无限数量的波转换是解锁,而不是最先进的phase-only反射表面形成许多实际系统的核心,从无线通信在典型城市和sub-urban环境卫星跟踪和near-Line-of-Sight (LOS)微波回程和点对点连接。

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.