基于石墨烯片的频率可调太赫兹天线
Frequency Tunable Terahertz Antenna Based on Graphene Sheet
刘博文 1徐航 1张雅婷 1李杰 1姚建铨2
作者信息
- 1. 天津大学光电信息技术教育部重点实验室,天津 300072
- 2. 天津大学光电信息技术教育部重点实验室,天津 300072;崂山实验室,山东青岛 266234
- 折叠
摘要
本文设计了一种基于石墨烯片的频率可调太赫兹天线,采用了折叠缝隙结构并使用共面波导馈电方式,以更好地实现阻抗匹配.通过调控在缝隙之间添加的4个石墨烯片的电导率,改变缝隙天线的等效长度,使天线在两种不同工作模式下的谐振频率分别为230.5 GHz和270.5 GHz.除此之外,在天线下方加载了方形封闭谐振环(Closed-Ring Resonator,CRR)构成的超表面,并使其谐振频率与天线的谐振频率匹配,将z轴负方向的辐射进行反射,使天线在两种工作模式下的增益提高至5.41 dBi和7.63 dBi,与无反射结构时相比分别增长2.48 dBi和3.55 dBi.
Abstract
In this paper,we propose a reconfigurable antenna using graphene which can work in terahertz band.The antenna use folded slot structure and coplanar waveguide to achieve impedance matching easily.By adjusting the conduc-tivity of the four graphene sheets added between the slots,we can change the resonant frequencies of the antenna from 230.5 GHz to 270.5 GHz.In addition,a metasurface consisted of square closed-ring resonators(CRR)is under the antenna used to increase the gain of antenna.Because of the reflection of metasurface,the gain of antenna in two work mode in-creases 2.48 dBi and 3.55 dBi respectively.
关键词
太赫兹/石墨烯/折叠缝隙天线/可重构天线/超表面/共面波导Key words
terahertz/graphene/folded slot antenna/reconfigurable antenna/metasurface/coplanar waveguide引用本文复制引用
基金项目
崂山实验室科技创新项目(LSKJ202200801)
国家重点研发计划项目(2021YFB2800703)
国家自然科学基金(U22A2008)
电磁空间安全全国重点实验室开放基金()
出版年
2024