基于超表面的多频带双极化转换器设计
Design of multiband dual-polarization converter based on metasur-face
曹为为 1解鑫 1李大妮 1于梦杰 1张胜1
作者信息
- 1. 中国矿业大学信息与控制工程学院,江苏徐州 221116
- 折叠
摘要
极化转换器在无线通信、雷达探测等众多工程领域有着广泛的应用,针对当前超宽带、多功能、高效率的应用需求,提出了一种双极化、多频带反射型极化转换器.基于超表面设计,该结构由顶层周期排列金属贴片、介质层和金属底板3部分组成.研究表明,对入射的线极化波,该结构在 6.2-6.7 GHz、17.7-19.2 GHz、20.88-21.14 GHz 3 个波段内实现极化转换率(polarization con-version ratio,PCR)高于90％的交叉极化转换;在7.12-16.68 GHz、19.47-20.67 GHz两个波段实现轴比(axial ratio,AR)低于3 dB的线圆极化转换.该设计具有结构简单、加工方便、能量损耗低等特点,在电磁波极化调控、微波器件设计等方面具有一定的理论与实用价值.
Abstract
Polarization converter is widely used in many engineering fields such as wireless communica-tion,radar detection and so on,aiming at the current application requirements of ultra-wideband,multi-function and high-efficiency,a dual-polarized,multi-band reflective polarization converter is proposed.Based on the metasurface,the structure is composed of three parts:metallic patch arranged periodically in top layer,dielectric layer and metallic plate in bottom layer.The research shows that for the incident lin-ear polarization wave,the structure can realize cross-polarization conversion in the three bands of 6.2-6.7 GHz,17.7-19.2 GHz,20.88-21.14 GHz with a polarization conversion ratio(PCR)of over 90％.It can realize linear-circular polarization conversion in the two bands of 7.12-16.68 GHz,19.47-20.67 GHz with a axial ratio(AR)of below 3 dB.This design has the characteristics of simple structure,convenient manufacture and low-energy consumption,it has certain theoretical and practical value in electromagnetic wave polarization controlling and microwave device designing and so on.
关键词
超表面/极化转换/双极化/多频带Key words
metasurface/polarization conversion/dual-polarization/multiband引用本文复制引用
出版年
2024
NETL
NSTL
万方数据