材料科学
石墨烯
天线(收音机)
光电子学
二极管
介电常数
控制重构
相对介电常数
聚酰亚胺
复合材料
电介质
电气工程
计算机科学
纳米技术
图层(电子)
工程类
嵌入式系统
作者
Siti Norhafizah Sa'don,Mohd Haizal Jamaluddin,Muhammad Ramlee Kamarudin,Fauzan Ahmad
标识
DOI:10.1002/cnma.202300015
摘要
Abstract This paper proposes a tunable antenna based on graphene for future wireless communication technology. The proposed antenna that is made by graphene/polyimide film able to tune the frequency using thermal that is exposed on it. The approach is investigated since it able to work as the other reconfiguration technique but cannot be adjustable likes diodes and liquid crystal. The antenna is fabricated into fifteen similar pieces and are separately cured at different temperature and exposure time; 250 °C, 300 °C, and 350 °C, for 20 minutes, 30 minutes, 1 hour, 2 hours, and 3 hours. The fabricated antennas are measured its S‐parameter as well as the characterisation of relative complex permittivity, sheet resistance, conductivity, surface morphology, and structure analysis. The measured results indicate that the frequency is tuned to lower within 4.1 GHz at 250 °C, 5.5 GHz at 300 °C, and 400 MHz at 350 °C. Looking into the future, even though this work is not using the same antenna, but it will lead to the proof of concept for tunable graphene antenna using thermal at fifth generation (5G) and next generation.
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