极化反射人工电磁表面
发布时间：2018-07-13 11:35
【摘要】：针对以往的人工电磁表面器件只能实现一种电磁功能的现象,提出一种可以根据电磁波极化方向改变其反射方向的人工电磁表面.依据广义菲涅尔反射定律,通过选择x和y方向上的相位梯度分布,电磁波在两个方向反射角可任意调节.以具有两个参数可调的矩形三明治结构为基本单元,基于数值拟合的方法合理选择单元尺寸,搭建6周期和12周期的极化反射人工电磁表面,CST仿真表明,该人工电磁表面系统对x极化和y极化入射的电磁波其反射方向完全相反,并且其反射角可以通过改变周期进行灵活调节,仿真结果和理论分析相吻合.该方法设计的极化反射人工电磁表面器件与传统的极化反射器件相比具有设计简单、体积小、成本低等优势.
[Abstract]:In view of the phenomenon that artificial electromagnetic surface devices can only realize one kind of electromagnetic function in the past, an artificial electromagnetic surface which can change its reflection direction according to the polarization direction of electromagnetic wave is proposed. According to the generalized Fresnel's law of reflection, by selecting the phase gradient distribution in the x and y directions, the reflection angle of the electromagnetic wave can be adjusted arbitrarily in both directions. Taking the rectangular sandwich structure with two parameters adjustable as the basic element and selecting the unit size reasonably based on the numerical fitting method, the simulation of the polarized reflection artificial electromagnetic surface (CST) with 6 cycles and 12 cycles is built. In this artificial electromagnetic surface system, the reflection direction of x polarization and y polarization incident electromagnetic waves is completely opposite, and the reflection angle can be adjusted flexibly by changing the period. The simulation results are in good agreement with the theoretical analysis. Compared with the traditional polarimetric reflectors, this method has the advantages of simple design, small size and low cost.
【作者单位】： 兰州理工大学电气工程与信息工程学院;兰州城市学院培黎工程技术学院;
【基金】：国家自然科学基金(61302116) 甘肃省自然科学基金(148RJZA021)
【分类号】：O441.4
，
本文编号：2119225
[Abstract]:In view of the phenomenon that artificial electromagnetic surface devices can only realize one kind of electromagnetic function in the past, an artificial electromagnetic surface which can change its reflection direction according to the polarization direction of electromagnetic wave is proposed. According to the generalized Fresnel's law of reflection, by selecting the phase gradient distribution in the x and y directions, the reflection angle of the electromagnetic wave can be adjusted arbitrarily in both directions. Taking the rectangular sandwich structure with two parameters adjustable as the basic element and selecting the unit size reasonably based on the numerical fitting method, the simulation of the polarized reflection artificial electromagnetic surface (CST) with 6 cycles and 12 cycles is built. In this artificial electromagnetic surface system, the reflection direction of x polarization and y polarization incident electromagnetic waves is completely opposite, and the reflection angle can be adjusted flexibly by changing the period. The simulation results are in good agreement with the theoretical analysis. Compared with the traditional polarimetric reflectors, this method has the advantages of simple design, small size and low cost.
【作者单位】： 兰州理工大学电气工程与信息工程学院;兰州城市学院培黎工程技术学院;
【基金】：国家自然科学基金(61302116) 甘肃省自然科学基金(148RJZA021)
【分类号】：O441.4
，
本文编号：2119225
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