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相关概念视频

Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

704
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.
704
Inverting and Non-inverting OpAmps01:20

Inverting and Non-inverting OpAmps

634
In an inverting amplifier, the input voltage is connected through a resistor to the inverting terminal. Meanwhile, the non-inverting terminal is grounded and a feedback resistor is established between the inverting and output terminal, as depicted in Figure 1.
634
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

288
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...
288
Integrator and Differentiator01:13

Integrator and Differentiator

769
Op-amp circuits have significant applications in various fields, including automotive engineering. One such application is cruise control systems in cars, where op-amp circuits are integral for maintaining a constant speed. In these systems, op-amps function as both integrators and differentiators.
An integrator within an op-amp circuit produces an output directly proportional to the integral of the input signal. This is achieved by replacing the feedback resistor in a typical inverting...
769
Biasing of FET01:22

Biasing of FET

217
Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the...
217
Cascaded Op Amps01:16

Cascaded Op Amps

586
Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
586

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相关实验视频

Updated: Jun 5, 2025

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

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可调节的芯片内模式转换器,通过反向设计实现.

Hongyin Zhou1, Kun Liao2, Zhaoxian Su1

  • 1Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China.

Nanophotonics (Berlin, Germany)
|December 5, 2024
PubMed
概括

我们开发了一种可调节模式转换器用于光通信,使得高阶模式转换成为可能. 这种液晶设备提供了动态通道切换,低损耗和高效的多功能设计.

关键词:
综合光子学 综合光子学逆向设计是一种逆向设计.模式划分多重复合方式.纳米光子学 纳米光子学

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Characterization of Anisotropic Leaky Mode Modulators for Holovideo
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Characterization of Anisotropic Leaky Mode Modulators for Holovideo

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Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface

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相关实验视频

Last Updated: Jun 5, 2025

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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

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Characterization of Anisotropic Leaky Mode Modulators for Holovideo
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科学领域:

  • 光子学和光学工程的工程.
  • 材料科学用于光电子学.

背景情况:

  • 模式分割复杂化 (MDM) 对于光通信通道切换和路由至关重要.
  • 现有的模式转换器难以同时进行高阶模式转换和动态调整.

研究的目的:

  • 设计一个可调节模式转换器,能够将基本模式转换为多个高级模式 (TE0,TE1,TE2).
  • 为了实现高性能,低内在损失和动态可调性.

主要方法:

  • 利用基于辅助方法的反向设计框架来优化模式转换器.
  • 制造了一种充满液晶的调模式转换器和一种模式解复数器,用于实验验证.

主要成果:

  • 设计的可调节模式转换器证明了对多个高级模式的高效转换.
  • 实验结果与模拟结果一致,实现了低交叉声 (约-7dB).
  • 该设备启用了动态路由功能.

结论:

  • 拟议的反向设计框架对于创建多功能光学设备是有效的.
  • 基于液晶的可调节模式转换器为先进的光通信系统提供了有前途的解决方案.