基于石墨烯片的频率可调太赫兹天线OA北大核心CSTPCD
Frequency Tunable Terahertz Antenna Based on Graphene Sheet
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.
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.
刘博文;徐航;张雅婷;李杰;姚建铨
天津大学光电信息技术教育部重点实验室,天津 300072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
电子信息工程
太赫兹石墨烯折叠缝隙天线可重构天线超表面共面波导
terahertzgraphenefolded slot antennareconfigurable antennametasurfacecoplanar waveguide
《电子学报》 2024 (005)
1421-1431 / 11
崂山实验室科技创新项目(No.LSKJ202200801);国家重点研发计划项目(No.2021YFB2800703);国家自然科学基金(No.U22A2008);电磁空间安全全国重点实验室开放基金 Laoshan Laboratory Science and Technology Innovation Project(No.LSKJ202200801);Na-tional Key Research and Development Program of China(No.2021YFB2800703);National Natural Science Foundation of China(No.U22A2008);Opening Funding of National Key Laboratory of Electromagnetic Space Security
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