太赫兹频段的柔性OAM阵列天线设计  

Design of flexible OAM array antenna in terahertz band

作　　者：昝雨轩 成国庆 王全全 吕云鹏 Zan Yuxuan;Cheng Guoqing;Wang Quanquan;Lyu Yunpeng(School of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003

出　　处：《电子测量技术》2025年第2期21-29,共9页Electronic Measurement Technology

基　　金：国家自然科学基金面上项目(62371247)。

摘　　要：针对目前轨道角动量天线模态数少、难以共形等问题,本文使用石墨烯、MXene等材料设计了一款工作在太赫兹频段的柔性阵列天线。通过调整馈电相位以产生不同模态的OAM涡旋波,改变石墨烯的外置电压改变了电导率,从而使工作频率可调谐。研究了弯折对天线性能的影响,并相应地进行了相位补偿和频率补偿。仿真实验结果表明,该天线仅需调整馈电相位差即可产生模态数为0~3整数阶,0.5、1.5、2.5分数阶的OAM涡旋波,天线增益可达11.7 dBi,天线的工作频率在1.1~1.9 THz范围内可调谐。对于明显的柱面弯折,本文的相位补偿和频率补偿方法能较好地维持涡旋波形态和工作频率。由实验结果可知,该柔性OAM天线在人机接口、软体机器人、航天部件等天线形变弯曲的场景应用潜力大。Aiming at the problems of the current OAM antenna,such as fewer modes,and difficulty to conform,this paper designs a terahertz-frequency array antenna using graphene and MXene.By adjusting the feeding phase,different OAM vortex wave modes can be generated.Changing the external voltage,the conductivity of graphene is modified,thus,the operating frequency can be tunable.The impact of bending on antenna performance is also studied,and phase and frequency compensation methods are proposed accordingly.The simulation results show that the antenna can generate numerous OAM vortex waves with integer mode of 0~3 and fractional mode of 0.5、1.5、2.5 by simply adjusting the feeding phase difference.The antenna gain can reach 11.7 dBi,and the operating frequency can be tuned within the range of 1.1~1.9 THz.For significant cylindrical bending,the proposed phase and frequency compensation methods can effectively maintain the vortex wave form and operating frequency.According to the experimental results,the proposed flexible OAM antenna is very promising in applications of antenna deformation and bending scenarios,such as human-machine interfaces,soft robots,and aerospace components,etc.

关 键 词：OAM 柔性天线 太赫兹 石墨烯 MXene 补偿 

分 类 号：TN827.1[电子电信—信息与通信工程]