- 必威体育下载

姓名
邮箱
手机号码
标题
留言内容
验证码

摘要

电磁波的极化调控在卫星通信、雷达探测以及立体显示成像等领域有重要的应用价值, 探索易于加工、转换效率高、工作频带宽的高性能极化转换器具有重要的研究意义. 本文提出了一种基于方形开口环超构表面的线性极化转换器, 该转换器具有各向异性特点, 反射电场沿两个对角线方向的分量振幅相等, 相位相差180°, 导致在反射模式下能够将入射波的极化方向旋转90°. 实验测试结果表明, 在7.12—18.82 GHz频带范围内极化转换率高于90%, 相对带宽达到90%. 频带的显著拓宽基于四个谐振频点, 每个谐振频点的转换效率都接近100%. 实验结果与模拟结果相符合, 验证了提出的超构表面可以在较宽的频带范围内实现电磁波的90°极化旋转.

关键词:

Abstract

Polarization state of electromagnetic wave has important applications in satellite communication, radar detection, and stereoscopic display imaging. Therefore, the control of polarization state of electromagnetic wave is an important direction in scientific research. The traditional method of manipulating the polarization state is mainly realized based on Faraday effect and birefringent crystal, which has a certain requirement for the material thickness (leading to large volume), and does not have broadband characteristics (leading to narrow band). Recently, metamaterial with subwavelength meta-atoms, has achieved many exotic phenomena and functionalities that cannot be found in nature. As an important branch of metamaterial-based devices, polarization converter has attracted great attention and achieved significant progress. However, most of them cannot realize ultra-broadband, high-efficiency, wide-angle, and simple geometry simultaneously. In this paper, a linear polarization converter based on a square split ring metasurface is proposed. Due to the anisotropic structure, the amplitudes of the reflected electric field along the two diagonal lines are equal, and their phase difference is 180°. As a result, the polarization direction of the incident wave can be rotated 90°. The simulation results show that the polarization conversion ratio (PCR) is higher than 90% in a frequency range from 7.12 to 18.82 GHz, which means that the relative bandwidth reaches 90%. The significant bandwidth expansion is attributed to the four electromagnetic resonances generated in a square-split-ring unit. We investigate the influence of geometric parameters on PCR in detail. We also examine the performance of the proposed structure under oblique incidence. It has little effect on the co-polarization and cross-polarization reflection coefficients when the incident angle is changed from 0° to 45°. Even if the incident angle reaches 45°, the mean PCR remains above 80%. The PCRs of the four electromagnetic resonant points are all close to 100%. Finally, we fabricate and measure the proposed polarization converter that contains $30\times30$ unit cells. The experimental results are in good agreement with the simulation results, and thus validating the design. In conclusion, we propose both theoretically and experimentally a linear polarization converter that possesses ultra-broadband, high-efficiency, wide-angle, and simple geometry simultaneously. The proposed scheme can be extended to terahertz and even optical frequencies.

Keywords:

作者及机构信息

1.
2.
3.

通信作者:韩天成,tchan123@swu.edu.cn

基金项目:重庆市基础研究与前沿探索项目(批准号: cstc2018jcyjA0572)资助的课题.

Authors and contacts

1.
2.
3.

Corresponding author:Han Tian-Cheng,tchan123@swu.edu.cn

Funds:Project supported by the Chongqing Research Program of Basic Research and Frontier Technology, China (Grant No. cstc2018jcyjA0572).

文章全文: translate this paragraph

参考文献

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]

施引文献

下载: 全尺寸图片幻灯片

	Ref.[17]	Ref.[19]	Ref.[22]	Ref.[25]	Ref.[27]	This work
OB^a/GHz	10.60—17.50	9.65—14.16	12.40—27.96	5.70—10.30	9.20—19.20	7.12—18.82
RB^b/%	49.0	37.9	77.1	57.5	70.4	90.0
注:^aoperating bandwidth (PCR > 90%),^brelative bandwidth (PCR > 90%).

下载: 导出CSV

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]

[1]	王东俊, 孙子涵, 张袁, 唐莉, 闫丽萍.抗方阻波动的超宽带轻薄频率选择表面吸波体. 必威体育下载 , 2024, 73(2): 024201.doi:10.7498/aps.73.20231365
[2]	刘会刚, 张翔宇, 南雪莹, 赵二刚, 刘海涛.基于准连续域束缚态的全介质超构表面双参数传感器. 必威体育下载 , 2024, 73(4): 047802.doi:10.7498/aps.73.20231514
[3]	王丹, 李九生, 郭风雷.宽带吸收与极化转换可切换的太赫兹超表面. 必威体育下载 , 2024, 73(14): 148701.doi:10.7498/aps.73.20240525
[4]	汪静丽, 杨志雄, 董先超, 尹亮, 万洪丹, 陈鹤鸣, 钟凯.基于VO₂的太赫兹各向异性编码超表面. 必威体育下载 , 2023, 72(12): 124204.doi:10.7498/aps.72.20222171
[5]	覃赵福, 陈浩, 胡涛政, 陈卓, 王振林.基于导波驱动相变材料超构表面的基波及二次谐波聚焦. 必威体育下载 , 2022, 71(3): 034208.doi:10.7498/aps.71.20211596
[6]	陈乐迪, 范仁浩, 刘雨, 唐贡惠, 马中丽, 彭茹雯, 王牧.基于柔性超构材料宽带调控太赫兹波的偏振态. 必威体育下载 , 2022, 71(18): 187802.doi:10.7498/aps.71.20220801
[7]	黄晓俊, 高焕焕, 何嘉豪, 栾苏珍, 杨河林.动态可调谐的频域多功能可重构极化转换超表面. 必威体育下载 , 2022, 71(22): 224102.doi:10.7498/aps.71.20221256
[8]	覃赵福, 陈浩, 胡涛政, 陈卓, 王振林.基于导波驱动相变材料超构表面的基波及二次谐波聚焦. 必威体育下载 , 2021, (): .doi:10.7498/aps.70.20211596
[9]	王明照, 王少杰, 许河秀.基于剪纸方法的一种可重构线极化转换空间序构超表面. 必威体育下载 , 2021, 70(15): 154101.doi:10.7498/aps.70.20210188
[10]	蔡成欣, 陈韶赓, 王学梅, 梁俊燕, 王兆宏.各向异性三维非对称双锥五模超材料的能带结构及品质因数. 必威体育下载 , 2020, 69(13): 134302.doi:10.7498/aps.69.20200364
[11]	林月钗, 刘仿, 黄翊东.基于超构材料的Cherenkov辐射. 必威体育下载 , 2020, 69(15): 154103.doi:10.7498/aps.69.20200260
[12]	杨玖龙, 元晴晨, 陈润丰, 方汉林, 肖发俊, 李俊韬, 姜碧强, 赵建林, 甘雪涛.硅超构表面上强烈增强的三次谐波. 必威体育下载 , 2019, 68(21): 214207.doi:10.7498/aps.68.20190789
[13]	曾立, 刘国标, 章海锋, 黄通.一款基于多物理场调控的超宽带线-圆极化转换器. 必威体育下载 , 2019, 68(5): 054101.doi:10.7498/aps.68.20181615
[14]	龙洋, 任捷, 江海涛, 孙勇, 陈鸿.超构材料中的光学量子自旋霍尔效应. 必威体育下载 , 2017, 66(22): 227803.doi:10.7498/aps.66.227803
[15]	马晓亮, 李雄, 郭迎辉, 赵泽宇, 罗先刚.超构天线：原理、器件与应用. 必威体育下载 , 2017, 66(14): 147802.doi:10.7498/aps.66.147802
[16]	蒲明博, 王长涛, 王彦钦, 罗先刚.衍射极限尺度下的亚波长电磁学. 必威体育下载 , 2017, 66(14): 144101.doi:10.7498/aps.66.144101
[17]	邓俊鸿, 李贵新.非线性光学超构表面. 必威体育下载 , 2017, 66(14): 147803.doi:10.7498/aps.66.147803
[18]	余积宝, 马华, 王甲富, 冯明德, 李勇峰, 屈绍波.基于开口椭圆环的高效超宽带极化旋转超表面. 必威体育下载 , 2015, 64(17): 178101.doi:10.7498/aps.64.178101
[19]	莫漫漫, 文岐业, 陈智, 杨青慧, 李胜, 荆玉兰, 张怀武.基于圆台结构的超宽带极化不敏感太赫兹吸收器. 必威体育下载 , 2013, 62(23): 237801.doi:10.7498/aps.62.237801
[20]	张利伟, 赵玉环, 王勤, 方恺, 李卫彬, 乔文涛.各向异性特异材料波导中表面等离子体的共振性质. 必威体育下载 , 2012, 61(6): 068401.doi:10.7498/aps.61.068401

计量

文章访问数:8861
PDF下载量:214
被引次数:0

搜索

留言板