Dual-band multi-beam reconfigurable terahertz antenna based on graphene frequency selective surface  

基于石墨烯频率选择表面的双频段多波束可重构太赫兹天线

作　　者：JIN Zhao RONG Yu QIAO Li-Ping YU Jing-Dong WU Fei GUO Chen TIAN Dou 靳钊;容瑜;乔丽萍;余景东;吴飞;郭晨;田豆(长安大学信息工程学院,陕西西安710064;西藏民族大学信息工程学院,陕西咸阳712082)

机构地区：[1]School of Information Engineering,Chang’an University,Xi’an 710064,China [2]College of Information Engineering,Xizang Minzu University,Xianyang 712082,China

出　　处：《红外与毫米波学报》2024年第5期628-633,共6页Journal of Infrared and Millimeter Waves

基　　金：Supported by the Natural Science Foundation of Tibet Autonomous Region(XZ202401ZR0025);the National Natural Science Founda-tion of China(62164011,62301081);the Natural Science Foundation of Shaanxi Province(2022JQ-589)。

摘　　要：In this paper,a dual-band graphene-based frequency selective surface(GFSS)is investigated and the operating mechanism of this GFSS is analyzed.By adjusting the bias voltage to control the graphene chemical po-tential between 0 eV and 0.5 eV,the GFSS can achieve four working states:dual-band passband,high-pass lowimpedance,low-pass high-impedance,and band-stop.Based on this GFSS,a hexagonal radome on a broadband omnidirectional monopole antenna is proposed,which can achieve independent 360°six-beam omnidirectional scanning at 1.08 THz and 1.58 THz dual bands.In addition,while increasing the directionality,the peak gains of the dual bands reach 7.44 dBi and 6.67 dBi,respectively.This work provides a simple method for realizing multi-band terahertz multi-beam reconfigurable antennas.本文研究了一种基于石墨烯的双频频率选择表面(GFSS),并分析了该GFSS的工作机理。通过调节偏置电压控制石墨烯化学势在0 eV和0.5 eV间变化,可以实现GFSS在双频段带通、高通低阻、低通高阻、带阻四种工作状态。基于此GFSS,提出了一种六边形天线罩加载在一个宽带全向单极子天线上,可以实现1.08 THz和1.58 THz双频段独立的360°六波束全向扫描。此外,在增加方向性的同时双频段的峰值增益分别达到了7.44 dBi和6.67 dBi。该工作为实现多频段太赫兹多波束可重构天线提供了一种简单的方法。

关 键 词：THz antenna MULTI-BEAM GRAPHENE DUAL-BAND RECONFIGURABLE 

分 类 号：TN823.25[电子电信—信息与通信工程]