Wang Weijia, Ma Chao, Zhang Xingtang, Shen Jiajia, Hanagata Nobutaka, Huangfu Jiangtao, Xu Mingsheng
College of Information Science and Electronic Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, China.
College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China.
Sci Technol Adv Mater. 2019 Aug 20;20(1):870-875. doi: 10.1080/14686996.2019.1653741. eCollection 2019.
Liquid-phase exfoliated graphene sheets are promising candidates for printing electronics. Here, a high-performance printed 2.4 GHz graphene-based antenna is reported. Graphene conductive ink prepared by using liquid-phase exfoliation process is printed onto a water-transferable paper by using blade printing technique, which is then patterned as dipole antenna and transferred onto a target substrate. The fabricated dipole antenna (43 × 3 mm), exhibiting typical radiation patterns of an ideal dipole antenna, achieves -10 dB bandwidth of 8.9% and a maximum gain of 0.7 dBi. The printed graphene-antennas satisfy the application requirements of the Internet of Things and suggest its feasibility of replacing conventional metallic antennas in those applications.
液相剥离石墨烯片是印刷电子领域很有前景的候选材料。在此，报道了一种高性能的基于石墨烯的2.4 GHz印刷天线。通过液相剥离工艺制备的石墨烯导电油墨，采用刮刀印刷技术印刷在可水转印纸上，然后将其图案化为偶极天线并转移到目标基板上。所制备的偶极天线（43×3毫米）呈现出理想偶极天线的典型辐射方向图，实现了8.9%的-10 dB带宽和0.7 dBi的最大增益。印刷的石墨烯天线满足物联网的应用要求，并表明其在这些应用中取代传统金属天线的可行性。
