摘要
编码超表面可通过编码序列调控空间波束方向,有利于无线通信系统目标用户定向传输和通信质量的提高。文章设计了工作在3.5 GHz的环形周期金属贴片的三层结构单元超表面,通过改变单元结构尺寸,得到基本编码单元,将编码单元按照不同方式排布,在此条件下实现单波束、双波束电磁波辐射。采用卷积运算的波束调控方法,垂直入射平面波激励下,反射波束角度的最大值由传统排布方式下的30°扩大至51°,而最小反射波束角度达到5°,为超表面上电磁波束的连续灵活调控提供了一种新思路。
Coding metasurfaces can regulate the spatial beam direction through coding sequences,which facilitates directional transmission and improves the communication quality for target users of wireless communication systems.In this paper,a three-layer structured cellular hypersurface with ring-shaped periodic metal patches operating at 3.5 GHz is designed.By changing the dimensions of the cell structure,the basic coding unit is obtained,and single-beam,dual-beam electromagnetic wave radiation is achieved by arranging the coding unit in different ways.With the beam regulation method of convolutional operation,the maximum value of the reflected beam angle under the vertical incident plane wave excitation is expanded from 30°to 51°under the traditional arrangement,and the minimum reflected beam angle reaches 5°,which provides a new idea for the continuous and flexible regulation of the electromagnetic beam on the metasurfaces.
作者
陈燕
王静
王本贤
CHEN Yan;WANG Jing;WANG Ben-xian(Xinjiang Key Laboratory of Luminescent Minerals and Photofunctional Materials,School of Physics and Electronic Engineering,Xinjiang Normal University,Urumqi,Xinjiang,830054,China)
出处
《新疆师范大学学报(自然科学版)》
2025年第2期27-35,共9页
Journal of Xinjiang Normal University(Natural Sciences Edition)
关键词
编码超表面
波束调控
卷积运算
Coding metasurfaces
Beam steering
Convolution operation
