检索结果-南通市图书馆

A 1-bit electronically reconfigurable beam steerable metasurface reflectarray with multiple polarization manipulations

引用

Chinese Physics B 2024年第1期33卷 384-394页

作者：史琰徐茜雅王少泽魏文岳武全伟 School of Electronic Engineering Xidian UniversityXi'an 710071China

A 1-bit electronically controlled metasurface reflectarray is presented to achieve beam steering with multiple polarization manipulations. A metsurface unit cell loaded by two PIN diodes is designed. By switching the two PIN diodes between ON and OFF states, the isotropic and anisotropic reflections can be flexibly achieved. For either the isotropic reflection or the anisotropic reflection, the two operation states achieve the reflection coefficients with approximately equal magnitude and 180°out of phase, thus giving rise to the isotropic/anisotropic 1-bit metasurface unit cells. With the 1-bit unit cells, a 12-by-12 metasurface reflectarray is optimally designed and fabricated. Under either y-or x-polarized incident wave illumination, the reflectarray can achieve the co-polarized and cross-polarized beam scanning, respectively, with the peak gains of 20.08 d Bi and 17.26 d Bi within the scan range of about ±50°. With the right-handed circular polarization(RHCP) excitation, the left-handed circular polarization(LHCP) radiation with the peak gain of 16.98 d Bic can be achieved within the scan range of ±50°. Good agreement between the experimental results and the simulation results are observed for 2D beam steering and polarization manipulation capabilities.

关键词： electronically controlled metasurface reflectarray beam steering polarization manipulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Innovative System for the Accumulation of Energy of the Step in a Limb Prosthesis

Innovative System for the Accumulation of Energy of the Step...

引用

第十一届IFTOMM世界大会

作者： Marita Canina Alberto Rovetta Fabio Pasolini Michele Tronconi Enrico Chiesa Laboratorio di Robotica Dip. di Meccanica Politecnico di MilanoPiazza L. da Vincin. 32-20133 Milano Laboratorio di Robotica Dip. di Meccanica Politecnico di MilanoPiazza L. da Vincin. 32-20133 Milano STMicroelectronics Via Tolomeo 1-20010 Cornaredo （Mi） STMicroelectronics Via Tolomeo 1-20010 Cornaredo （Mi） STMicroelectronics Via Tolomeo 1-20010 Cornaredo （Mi）

＜正＞The research activity undertaken at Laboratorio di Robotica, Dipartimento di Meccanica del Politecnico di Milano, in cooperation with Centro Protesi INAIL and STMicroelectronics, is revolutionary in the sector of prosthesis. The main target of this project is the development of a new kind of artificial limb, electronically controlled, which, resorting to innovatory mechanical and electronic solutions, would allow a modified type of step, in an easy and intuitive way, taking care of patient’s requirements. This choice avoids problems like the oil seeping and the heaviness of traditional systems of actuation, while, on the other hand, it allows a clearer and more reliable design. The system which accumulates and returns energy is original and it allows varying features of the prosthesis with high simplicity.

关键词： Limb prosthesis electronically controlled Leaves-shaped spring

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：