超宽带系统的多功能日志周期石墨烯天线
V Govindaraj1, C Ramesh1, S Dhanasekar2
1Department of ECE, Kalaignarkarunanidhi Institute of Technology, Coimbatore, 641402, India.
Discover nano
|January 27, 2026
概括
本研究介绍了一种基于石墨烯的新型日志周期天线,用于超宽带应用. 天线通过改变直流电压来动态调整其性能,从而实现可重新配置的频率范围和稳定的辐射模式.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 天线理论天线理论
背景情况:
- 超宽带 (UWB) 技术在天线大小,辐射稳定性,阻抗匹配和成本方面面临挑战.
- 日志周期牙平面天线为UWB提供适应性,紧性和宽带性能,具有高收益和多频段应用的潜力.
- 响应器结构,重配置性和元表面的进步对于日志周期天线的相关性至关重要,特别是在补充5G网络的次GHz应用中.
研究的目的:
- 提出和研究一种新的日志周期天线,利用石墨烯用于可重新配置的超宽带 (UWB) 应用.
- 通过石墨烯的直流电压控制来证明天线带宽,辐射模式和操作频率范围的动态调整.
- 为了实现sub-GHz应用的广泛频率范围的稳定,定向辐射模式.
主要方法:
- 一个日志周期石墨烯格子天线的设计,与50欧姆输送线相连.
- 利用直流电压变化来调整石墨烯的化学潜力,表面导电性和表面阻抗.
- 模拟和实施以分析天线性能,包括带宽,辐射模式和频率范围.
主要成果:
- 拟议的基于石墨烯的日志周期天线在0.1-1.3 GHz频率范围内有效运行.
- 动态调整直流电压允许对天线的操作特征进行可控的重新配置.
- 在整个0.1-1.3 GHz带宽中,在1 eV的石墨烯化学电位下,实现了稳定和定向的辐射模式.
结论:
- 基于石墨烯的日志周期天线为可重新配置的UWB系统提供了一个有希望的解决方案.
- 拟议的电压控制的重新配置性解决了UWB天线设计中的关键挑战.
- 这项技术对未来的5G互补服务具有潜力,需要宽带,稳定和可适应的天线.
更多相关视频
07:51Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
Published on: February 1, 2022
3.8K
07:14Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
Published on: May 1, 2018
8.2K
相关概念视频
Multi-input and Multi-variable systems
411
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence of...
In the absence of...
411
The Mantel-Cox Log-Rank Test
1.0K
The Mantel-Cox log-rank test is a widely used statistical method for comparing the survival distributions of two groups. It tests whether a statistically significant difference exists in survival times between the groups without assuming a specific distribution for the survival data, making it a non-parametric test. This flexibility makes the log-rank test particularly valuable in medical research and other fields where the timing of an event, such as death or disease recurrence, is of...
1.0K
The Antenna Complex
7.9K
Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency can...
7.9K
Transfer Function in Control Systems
1.6K
The transfer function is a fundamental concept in the analysis and design of linear time-invariant (LTI) systems. It offers a concise way to understand how a system responds to different inputs in the frequency domain. It serves as a bridge between the time-domain differential equations that describe system dynamics and the frequency-domain representation that facilitates easier manipulation and analysis.
To derive the transfer function, consider a general nth-order linear time-invariant...
To derive the transfer function, consider a general nth-order linear time-invariant...
1.6K
Functional Brain Systems: Limbic System
7.1K
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
7.1K
The Periodic Table
110.8K
As early chemists discovered more elements, they realized that various elements could be grouped by their similar chemical behaviors. One such grouping includes lithium (Li), sodium (Na), and potassium (K). All of these elements are shiny, conduct heat and electricity well, and have similar chemical properties. A second grouping includes calcium (Ca), strontium (Sr), and barium (Ba), which also are shiny, good conductors of heat and electricity, and have chemical properties in common. However,...
110.8K
