红外与毫米波学报2020，Vol.39Issue(1)：39-46,8.DOI:10.11972/j.issn.1001-9014.2020.01.007
基于石墨烯的波束可重构太赫兹天线
Terahertz beam reconfigurable micro-strip Quasi-Yagi-Uda antenna based on monolayer graphene
摘要
Abstract
We propose a beam reconfigurable micro-strip quasi-Yagi-Uda(QYU)antenna operating at terahertz(THz)frequencies. The antenna,on a metal-backed SiO2 substrate,consists of a metallic micro-strip transmis?sion line,a metallic reflector,a metallic half-round micro patch,and three groups of monolayer-graphene-patch directors. Because the conductivities of the graphene patches can be electrically tuned,the radiation direction of the QYU antenna can be dynamically controlled by adjusting the bias voltages applied to the graphene patches. The basic properties and the tunable behaviors of the antenna are systemically simulated and optimized. It has very fast modulation speed and very low return loss. In particular,the numerical results show that the main radia?tion lobe angle φ(azimuth angle)of the QYU antenna can be swept from 30° to 150° in θ=60°(zenith angle) plane with different configurations of bias voltages applied to the graphene-patch directors. The proposed antenna is very suitable for THz beam reconfigurable applications,such as phased array radar systems.关键词
波束可重构天线/石墨烯/贴片天线/八木天线Key words
beam reconfigurable antenna/graphene/patch antenna/Yagi-Uda antenna分类
信息技术与安全科学引用本文复制引用
姚文龙,郭旭光,朱亦鸣,李萍..基于石墨烯的波束可重构太赫兹天线[J].红外与毫米波学报,2020,39(1):39-46,8.基金项目
National Natural Science Foundation of China(61731020,61722111) （61731020,61722111）
