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MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

362
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
362
Gain01:15

Gain

183
Gain and phase shift are properties of linear circuits that describe the effect a circuit has on a sinusoidal input voltage or current. The circuit's behavior that contains reactive elements will depend on the frequency of the input sinusoid. As a result, it is observed that the gain and phase shift will all be frequency functions.
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
183
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

261
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
261

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相关实验视频

Updated: Jul 12, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
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基于增强的石墨烯电子调节相位变速器.

Muhammad Yasir1, Fabio Peinetti2, Patrizia Savi2

  • 1Division of Microrobotics and Control Engineering, Department of Computing Science, University of Oldenburg, 26129 Oldenburg, Germany.

Micromachines
|October 28, 2023
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种可调节的微波相变器,使用石墨烯. 将直流电压应用于石墨烯调节导电性,实现59度相位移,幅度变化最小.

关键词:
石墨烯是一种石墨烯.阶段变速器 阶段变速器厚薄膜是一种厚薄膜.可调节设备可以调节的设备.

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科学领域:

  • 电气工程 电气工程
  • 材料科学 材料科学 材料科学
  • 微波工程 微波工程

背景情况:

  • 微波相移器是各种电子系统中至关重要的组件.
  • 石墨烯的独特电子特性为可调节的微波设备提供了潜力.

研究的目的:

  • 设计和演示一个增强的可调微波相变器.
  • 为了利用石墨烯的可调导导率用于相位移应用.

主要方法:

  • 阶段变速器的设计包括三个短路断路和一个线.
  • 连接到的石墨烯允许通过直流电压进行导电性调制.
  • 分析模型,电路和全波模拟被用于优化.
  • 为了验证性能,进行了原型制造和测量.

主要成果:

  • 实现了59度的动态相位变化.
  • 在相调期间,振幅变化保持在1dB以下.
  • 物理参数的优化最大限度地提高了反应电阻变化.

结论:

  • 拟议的基于石墨烯的微波相变器展示了有效的可调节性能.
  • 这项技术对先进的微波和射频应用具有前景.