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相关概念视频

Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

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Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
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Clipper Circuit01:18

Clipper Circuit

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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...
410
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

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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...
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Power Factor Correction01:20

Power Factor Correction

170
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
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Phasor Arithmetics01:13

Phasor Arithmetics

285
Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...
285
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

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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.
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Updated: Jun 24, 2025

Quasi-light Storage for Optical Data Packets
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高精度的3 × 3合器解调算法与额外的相位转移判断模块.

Shumin Pan, Qiang Ge, Gang Zhang

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    概括
    此摘要是机器生成的。

    这项研究增强了3x3合器解调的圆配合算法 (EFA),提高了小信号的性能. 新方法提高了精度和动态范围,确保了可靠的相位调节.

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    相关实验视频

    Last Updated: Jun 24, 2025

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    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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    科学领域:

    • 光学工程是指光学工程.
    • 信号处理 信号处理

    背景情况:

    • 圆配合算法 (EFAs) 对于3x3合器解调至关重要,但与小刺激信号作斗争.
    • 现有的方法在3x3合器中需要高对称性,这限制了它们的应用.

    研究的目的:

    • 为了解决 EFA 在 3x3 合器解调中的小信号的局限性.
    • 为了提高相变调系统的精度和动态范围.

    主要方法:

    • 引入了一个阶段转移判断模块,以根据Lissajous图形大小来确定EFA执行.
    • 实现实时参数更新,用于连续的圆校正.
    • 开发了一种方法,以在小相位转换条件下保持EFA功能.

    主要成果:

    • 与标准EFA相比,在30mV的刺激振幅下,总波扭曲 (THD) 提高了1.28%.
    • 实现了125.64 dB @ 1 kHz的动态范围与1%的THD.
    • 在相解调过程中证明了更高的精度.

    结论:

    • 拟议的算法有效地克服了使用小信号的EFA限制.
    • 增强的EFA显著提高了3x3合器解调系统的性能和动态范围.
    • 实时参数更新可确保高精度和可靠的相变调.