Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Standing Electromagnetic Waves01:15

Standing Electromagnetic Waves

1.4K
Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
1.4K
Maximum Power Transfer01:16

Maximum Power Transfer

216
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
216
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

2.5K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
2.5K
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

114
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
114
Electromagnetic Waves01:30

Electromagnetic Waves

8.5K
James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws...
8.5K
Electromagnetic Fields01:30

Electromagnetic Fields

2.1K
Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of...
2.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Miniaturized EBG Antenna for Efficient 5.8 GHz RF Energy Harvesting in Self-Powered IoT and Medical Sensors.

Sensors (Basel, Switzerland)·2025
Same author

Array inspired wideband and high gain antenna with enhanced pattern diversity for 5G mm wave networks.

Scientific reports·2025
Same author

Recent Advancements in Localization Technologies for Wireless Capsule Endoscopy: A Technical Review.

Sensors (Basel, Switzerland)·2025
Same author

Designing a Novel Hybrid Technique Based on Enhanced Performance Wideband Millimeter-Wave Antenna for Short-Range Communication.

Sensors (Basel, Switzerland)·2024
Same author

Dual-band MIMO antenna with low mutual coupling for 2.4/5.8 GHz communication and wearable technologies.

PloS one·2024
Same author

Three-Dimensional Printed Annular Ring Aperture-Fed Antenna for Telecommunication and Biomedical Applications.

Sensors (Basel, Switzerland)·2024

相关实验视频

Updated: May 25, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

7.7K

为毫米波5G网络提供高性能串联发电阵列多输入多输出天线.

Nabeel Alsaab1, Khaled Alhassoon1, Fahd Alsaleem1

  • 1Department of Electrical Engineering, College of Engineering, Qassim University, Buraydah 52571, Saudi Arabia.

Sensors (Basel, Switzerland)
|February 26, 2025
PubMed
概括

这项研究引入了一种用于28 GHz毫米波通信的新型多输入多输出 (MIMO) 天线. 该设计可实现高增益和带宽,并尽量减少干扰,从而提高无线系统的性能.

关键词:
5G通信是5G网络中的一个.这些系统是MIMO系统.天线天线天线天线高隔离的高度隔离.毫米波 (mmWave) 是一种毫米波.

更多相关视频

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
05:04

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Published on: June 13, 2023

1.4K
Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
10:54

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

Published on: July 8, 2013

14.8K

相关实验视频

Last Updated: May 25, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

7.7K
Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
05:04

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Published on: June 13, 2023

1.4K
Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
10:54

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

Published on: July 8, 2013

14.8K

科学领域:

  • 电气工程 电气工程
  • 电磁学 电磁学 电磁学 电磁学
  • 天线理论天线理论

背景情况:

  • 毫米波 (mmWave) 频率,如28 GHz频段,对于下一代无线通信系统至关重要.
  • 高性能天线对于在毫米波通信中实现所需的数据速率和可靠性至关重要.
  • 现有的MIMO天线设计经常面临相互合和在这些频率上有限的带宽的挑战.

研究的目的:

  • 为28 GHz频段提供高性能多输入多输出 (MIMO) 天线设计.
  • 为了优化天线间距,并采用基于元材料的脱来最大限度地减少干扰.
  • 验证该设计是否适用于先进的毫米波通信系统.

主要方法:

  • 设计和模拟一个四个端口的MIMO天线,每个端口有1×8个串行养阵列.
  • 实现优化天线间距和元材料细胞结构的实现,以实现元件脱.
  • 对天线参数的实验评估,包括增益,带宽,相互合和相关系数.

主要成果:

  • 达到15.5dBi的峰值增益和2GHz的带宽.
  • 证明了异常低的互联合低于-40dB.
  • 记录了0.00010的外包相关系数和接近10dB的多样性收益.
  • 在整个操作频谱中测量了0.11位/秒/Hz的通道损失容量.

结论:

  • 拟议的MIMO天线设计为28 GHz应用提供了显著的性能改进.
  • 基于元材料的脱有效地减轻了天线元件之间的干扰.
  • 该设计是各种需要高增益和低相关性的毫米波通信系统的强大解决方案.