太赫兹波段方向图可重构微带阵列天线设计  

Design of Pattern Reconfigurable Microstrip Array Antenna in Terahertz Band

作　　者：王颖[1] 李春树[1] 闫翔 Wang Ying;Li Chunshu;Yan Xiang(School of Electronic and Electrical Engineering,Ningxia University,Yinchuan 750021,Ningxia,China)

机构地区：[1]宁夏大学电子与电气工程学院,宁夏银川750021

出　　处：《激光与光电子学进展》2024年第9期215-221,共7页Laser & Optoelectronics Progress

基　　金：宁夏自然科学基金(2022AAC03116)。

摘　　要：结合石墨烯材料在太赫兹波段下具有利于阻抗匹配、电可控的独特优势与可重构微带阵列天线高辐射效率等特点,设计了一款适用于太赫兹波段基于石墨烯材料的方向图可重构微带阵列天线。该阵列天线的天线单元在辐射贴片中嵌入石墨烯贴片充当开关,通过调节石墨烯的外加偏置电压改变开关的导通与截止状态。天线单元及阵列天线的工作频率皆为5.012 THz,天线单元在工作频率可以实现12°~24°的方向图调整,且具有良好的增益特性及抗干扰性,由天线单元组成的2×2的微带阵列天线可实现在0°~13°的方向图可重构功能,仿真结果表明,阵列天线的最大增益为12.5 dBi,最大波束宽度为51.4°,具有较好的方向性与抗干扰能力。A graphenebased reconfigurable microstrip array antenna suitable for the terahertz band was designed in this study.The design combined the unique advantages of grapheme for impedance matching and electrical controllability in the terahertz band and the characteristics of high radiation efficiency of the reconfigurable microstrip array antenna.The array antenna unit embedded a graphene patch in the radiant patch as a switch and changed the switch’s onoff and offoff states by adjusting the applied bias voltage of graphene.The antenna unit and the array antenna have an operating frequency of 5.012 THz.The antenna unit exhibits strong gain characteristics and antiinterference performance,and can realize the pattern of adjustment to 12°‒24°at the working frequency.The 2×2 microstrip array antenna composed of the antenna unit can realize the pattern reconfiguration function of 0°‒13°.The simulation results show that the maximum gain of the array antenna is 12.5 dBi and the maximum beam width is 51.4°.In addition,the array antenna exhibits good directivity and antiinterference ability.

关 键 词：石墨烯材料 太赫兹波段 方向图可重构 微带阵列天线 天线单元 

分 类 号：TB34[一般工业技术—材料科学与工程] TN822.4[电子电信—信息与通信工程] TN823.27