Design and Operation of a Graphene-Based Plasmonic Nano-Antenna Array for Communication in the Terahertz Band
Design and Operation of a Graphene-Based Plasmonic Nano-Antenna Array for Communication in the Terahertz Band
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DOI：
10.1109/jsac.2020.3000881
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发表时间：
2020-06
影响因子：
16.4
通讯作者：
Arjun Singh;Michael Andrello;Ngwe Thawdar;J. Jornet
中科院分区：
文献类型：
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作者：
Arjun Singh;Michael Andrello;Ngwe Thawdar;J. Jornet
太赫兹 (THz) 频段 (0.1 – 10 THz) 通信被视为一种关键的无线技术，可满足密集网络中更高无线数据速率的需求。目前正在考虑几种正在进行的方法来克服太赫兹频段的巨大挑战，即有限的通信距离。其中，有人提出使用石墨烯等新型二维纳米材料来创建直接在太赫兹范围内运行并且可以密集封装的新型等离子体设备。本文提出了一种新颖的太赫兹等离子体阵列架构，它利用石墨烯的特性来大大简化其设计和操作。等离子体阵列的每个元件都是一个独立的前端，由片上等离子体源、调制器和天线组成。讨论了这种阵列架构相对于传统阵列架构的优点。在传输方面对前端和阵列设计的权衡进行了详尽的研究。提出了执行连续动态波束形成的能力。开发了一种新的定制算法用于波束成形权重选择。提供了大量的数值结果来展示阵列的动态波束形成和增加功率输出的功能。
Terahertz (THz)-band (0.1 – 10 THz) communication is envisioned as a key wireless technology to satisfy the need for higher wireless data rates in denser networks. Several ongoing approaches are being considered to overcome the grand challenge of the THz band, i.e., the limited communication distance. Among others, the use of new 2D nanomaterials such as graphene to create novel plasmonic devices that operate directly in the THz range and can be densely packed has been proposed. This paper presents a novel THz plasmonic array architecture which leverages the properties of graphene to greatly simplify its design and operation. Each element of the plasmonic array is an independent front-end, consisting of an on-chip plasmonic source, modulator and antenna. The advantages of this array architecture over conventional array architectures are discussed. The trade-offs in the design of the front-end and the array are exhaustively studied in transmission. The ability to perform continuous dynamic beamforming is presented. A new tailored algorithm is developed for beamforming weight selection. Extensive numerical results are provided to demonstrate the functionality of the array for dynamic beamforming and increased power output.