This paper presents a graphene-based antenna array for terahertz (THz) applications. The suggested antenna array has four radiating square shaped patches fed by a coplanar waveguide (CPW) technique. The proposed antenna array operates at the three frequencies with operational bandwidths of 1.173–1.210 THz (at 1.19 THz), 1.270–1.320 THz (at 1.3 GHz), and 1.368–1.346 THz (at 1.4 GHz). The total area of the antenna array is reported as 1000 × 1000 µm2, printed on a Silicon substrate with a thickness of 20 µm and a dielectric constant of ϵ r = 11.9. To enhance the structure’s performance and optimize the feeding network, a parametric analysis was performed using the FDTD technique. Furthermore, the key properties of the proposed antenna array, such as resonance frequency, peak gain, and radiation efficiency, may be changed by adjusting the chemical potentials of the graphene in the antenna array. The use of graphene’s chemical potential tuneability yields exceptional results comparing to the recent research outputs, with a peak gain and radiation efficiency of 10.45 dB and 70%, respectively. These results show the performance of the suggested design for constructing antenna arrays for use in THz applications.

中文翻译：

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用于太赫兹应用的基于石墨烯的可重构贴片天线阵列的设计和开发

本文介绍了一种用于太赫兹 (THz) 应用的基于石墨烯的天线阵列。建议的天线阵列有四个辐射方形贴片，由共面波导 (CPW) 技术馈电。所提出的天线阵列在三个频率下工作，工作带宽为 1.173–1.210 THz（1.19 THz）、1.270–1.320 THz（1.3 GHz）和 1.368–1.346 THz（1.4 GHz）。天线阵列的总面积报告为 1000 × 1000 µm2，印在厚度为 20 µm 且介电常数为ε r = 11.9。为了提高结构的性能并优化馈电网络，使用 FDTD 技术进行了参数分析。此外，所提出的天线阵列的关键特性，如谐振频率、峰值增益和辐射效率，可以通过调整天线阵列中石墨烯的化学势来改变。与最近的研究成果相比，使用石墨烯的化学势可调性产生了非凡的结果，峰值增益和辐射效率分别为 10.45 dB 和 70%。这些结果显示了构建用于太赫兹应用的天线阵列的建议设计的性能。