相关实验视频

Updated: Jun 27, 2026

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

太赫兹可重配置平面石墨烯混合型Yagi-Uda天线

Qimeng Liu¹, Renbin Zhong¹, Boli Xu¹

¹Terahertz Research Center, School of Electronic Science and Engineering, Cooperative Innovation Centre of Terahertz Science, University of Electronic Science and Technology of China, Chengdu 611731, China.

Nanomaterials (Basel, Switzerland)

|April 11, 2025

概括

这项研究介绍了一种新的可重新配置的Yagi-Uda天线,用于太赫兹通信. 通过使用石墨烯,天线的天线.

科学领域:

电磁学和应用物理学
天线工程天线工程
特拉赫兹技术的技术.

背景情况:

太赫兹 (THz) 通信系统需要具有可适应的操作频率的天线.
传统的天线往往缺乏灵活性,可以在没有物理重新配置的情况下覆盖多个频段.
石墨烯的可调节导电性为开发可重新配置的电子元件提供了一个有前途的途径.

研究的目的:

为THz通信设计和分析一个频率可重新配置的Yagi-Uda天线.
通过调整石墨烯导电性来证明天线在多个频段中运行的能力.
评估天线的性能特征,包括增益和频率敏捷性.

主要方法:

一个Yagi-Uda天线结构是用双极辐射元素在介电基板上设计的.
在双极臂的末端集成了分离的金属和石墨烯寄生虫斑块.
通过应用门电压来重新配置天线的操作频率,以改变石墨烯导电性.

主要成果:

拟议的可重新配置的混合Yagi-Uda天线在五个不同的频段成功运行.
在整个操作频段实现了4.53dB的峰值增益.
门电压有效调整了天线的相当电长,使频率重新配置.

结论:

设计的天线为多频段THz通信提供了一个紧而经济的解决方案.
在不改变天线物理结构的情况下实现频率重新配置.
这项技术提高了系统性能和适应性,用于各种太赫兹应用.

关键词:

雅吉乌达 (YagiUda) 是一个一个天线天线天线.石墨烯是一种石墨烯.可重新配置的可重新配置.太赫兹 (Terahertz) 是一个频率.

更多相关视频

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

相关概念视频

IR Absorption Frequency: Hybridization

IR Absorption Frequency: Hybridization

Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that stretch at a...