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相关概念视频

Transmission Line Design Considerations01:23

Transmission Line Design Considerations

159
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...
159
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

101
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
101
Boundary Conditions: Lossless Lines01:21

Boundary Conditions: Lossless Lines

111
Consider a single-phase, two-wire, lossless transmission line terminated by an impedance at the receiving end and a source with Thevenin voltage and impedance at the sending end. The line, with length, has a surge impedance and wave velocity determined by the line's inductance and capacitance.
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
111
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

806
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
806
Clipper Circuit01:18

Clipper Circuit

471
A clipper circuit is a fundamental wave-shaping device that harnesses the unique properties of diodes to alter and control waveform characteristics. This technology is widely used in electronic devices, especially in television and radar communication systems, where it enhances waveform modulation in both transmitters and receivers.
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
471
Lossless Lines01:23

Lossless Lines

142
In electrical engineering, a lossless transmission line is characterized by a purely imaginary propagation constant and a resistive characteristic impedance. The ABCD parameters, which describe the relationship between the input and output voltages and currents, indicate an equivalent π circuit with an imaginary series impedance and a shunt admittance. This results in a transmission line that, when the product of the phase constant (beta) and the length of the line is less than pi,...
142

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相关实验视频

Updated: Jul 15, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

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Published on: March 20, 2017

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紧的带宽增强的180度相变换器使用边缘合的多微条带和人工传输线路.

Ding He1,2, Jingxin Fan1,2, Zhiqiang Zhu2,3

  • 1Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China.

Micromachines
|September 28, 2023
PubMed
概括

本研究介绍了一种新的紧宽带180度相变器,使用边缘合的多微条带线和人工传输线. 该设计显著减少了芯片面积,并提高了带宽,以实现经济高效的制造.

关键词:
在 GaAsAs 的情况下.人工输电线路的人工输电线路带宽的增强带宽的增强.紧紧的 紧的 紧的边缘结合在一起 结合在一起微条纹线路的线路是微条纹.阶段变速器 阶段变速器

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
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相关实验视频

Last Updated: Jul 15, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

9.9K
Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

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In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
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科学领域:

  • 电气工程 电气工程
  • 微波工程 微波工程
  • 电路设计 电路设计

背景情况:

  • 阶段变速器设计的紧性对于降低制造成本至关重要.
  • 现有的设计往往面临带宽和芯片面积的限制.
  • 宽带相变器是各种射频和微波系统中必不可少的组件.

研究的目的:

  • 介绍一款全新的紧宽带180度相位变速器结构.
  • 与传统方法相比,实现更强的带宽和显著减少的芯片面积.
  • 为了最大限度地减少插入损失和相位误差,以提高性能.

主要方法:

  • 提出了结合边缘合多微带线 (ECMML) 和带有双缩短电感器的人工传输线 (ATL) 的配置.
  • 嵌入了电容器的定期分流负载,以减少线路长度.
  • 设计和验证了使用0.15微米GaAs pHEMT技术用于宽带开关网络的结构.

主要成果:

  • 与传统设计相比,实现了线长显著减少35.8%.
  • 设计的相变器显示插入损失<2dB,回归损失>12dB.
  • 在10-20 GHz中显示最大相误差<0.6°和频道振幅差异<0.1dB.

结论:

  • 新型结构为紧和高性能宽带相变器提供了可行的解决方案.
  • 设计优势包括增强的带宽和减少的芯片面积,从而降低制造成本.
  • 取得的性能指标验证了拟议的ECMML和ATL配置的有效性.