Liu Qimeng, Zhong Renbin, Xu Boli, Dong Jiale, Teng Gefu, Zhong Ke, Wu Zhenhua, Zhang Kaichun, Hu Min, Liu Diwei
Terahertz Research Center, School of Electronic Science and Engineering, Cooperative Innovation Centre of Terahertz Science, University of Electronic Science and Technology of China, Chengdu 611731, China.
Nanomaterials (Basel). 2025 Mar 25;15(7):488. doi: 10.3390/nano15070488.
In this paper, we design a frequency reconfigurable antenna for terahertz communication. The antenna is based on a Yagi design, with the main radiating elements being a pair of dipole antennas printed on the top and bottom of a dielectric substrate, respectively. The director and reflector elements give the antenna end-fire characteristics. The ends of the two arms of the dipole are constructed by staggered metal and graphene parasitic patches. By utilizing the effect of gate voltage on the conductivity of graphene, the equivalent length of the dipole antenna arms are altered and thereby adjust the antenna's operating frequency. The proposed reconfigurable hybrid Yagi-Uda antenna can operate in five frequency bands separately at a peak gain of 4.53 dB. This reconfigurable antenna can meet the diverse requirements of the system without changing its structure and can reduce the size and cost while improving the performance.
在本文中，我们设计了一种用于太赫兹通信的频率可重构天线。该天线基于八木天线设计，主要辐射元件是分别印刷在介质基板顶部和底部的一对偶极天线。导向器和反射器元件赋予天线端射特性。偶极的两个臂的末端由交错的金属和石墨烯寄生贴片构成。通过利用栅极电压对石墨烯导电性的影响，改变偶极天线臂的等效长度，从而调整天线的工作频率。所提出的可重构混合八木 - 宇田天线可以在五个频段分别工作，峰值增益为4.53 dB。这种可重构天线无需改变其结构就能满足系统的各种需求，并且在提高性能的同时可以减小尺寸和降低成本。
