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相关概念视频

Transmission Line Design Considerations01:23

Transmission Line Design Considerations

164
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...
164
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

815
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.
815
Clipper Circuit01:18

Clipper Circuit

477
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...
477

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相关实验视频

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Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
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反向设计的超紧的多通道和多模式波导交叉路口.

Hansi Ma, Te Du, Xinpeng Jiang

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    概括
    此摘要是机器生成的。

    研究人员使用反向设计设计双模式波导交叉路口,实现横向电 (TE0) 和 (TE1) 模式的高效传播. 实验结果显示,三通道和四通道设备的插入损失和交叉声量很低.

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    科学领域:

    • 光子学和波导技术 波导技术
    • 集成光学 集成光学 集成光学
    • 纳米光子学 纳米光子学

    背景情况:

    • 波导交叉是光子集成电路中必不可少的组件.
    • 通过十字路口有效地路由多种模式 (TE0和TE1) 是一个挑战.
    • 现有的设计往往遭受高插入损失和交叉声波.

    研究的目的:

    • 设计和实验验证新的三和四通道双模式波导交叉路口.
    • 为了实现基本的横向电 (TE0) 和第一级更高的横向电 (TE1) 模式的有效传播.
    • 为了最大限度地减少插入损失和宽带操作的交叉通话.

    主要方法:

    • 利用逆向设计方法来优化波导结构.
    • 设计的波导交叉与六角形和八角形的横截面.
    • 使用标准的纳米制造技术制造设计的设备.
    • 在实验中描述了设备的性能,包括插入损失和交叉声响.

    主要成果:

    • 实现了TE0和TE1模式的低插入损失 (三通道设备<1.8dB,四通道设备<2.5dB).
    • 证明了出色的交叉声抑制 (三通道设备<-18.4dB,四通道设备<-17.0dB).
    • 实验结果验证了1540nm至1560nm的波长范围内的设计.

    结论:

    • 反向设计方法可以创建高性能双模波导交叉路口.
    • 拟议的设计提供高效的模式复杂化和解复杂化功能.
    • 该方案可扩展到具有更多通道和模式的波导交叉路口,为先进的光子集成电路铺平了道路.