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相关概念视频

Active Filters01:25

Active Filters

773
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
773
Passive Filters01:27

Passive Filters

512
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
512

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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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Published on: February 4, 2018

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灵感来自于Metatronics的高选择性超表面过器.

Qihao Lv1, Xu Qin1, Mingzhe Hu1

  • 1Department of Electronic Engineering, Tsinghua University, Beijing 100084, China.

Nanophotonics (Berlin, Germany)
|December 5, 2024
PubMed
概括
此摘要是机器生成的。

超级电子电路使用超级表面进行高选择性光学波器. 这种方法简化了光学纳米电路的设计,使得高效,近矩形的过反应.

关键词:
分散合成的分散合成.高选择性的高选择性.超表面过器是一种超表面过器.这是一个巨大的转换器.

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相关实验视频

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科学领域:

  • 光子学和纳米技术的使用.
  • 地元表面光学 表面光学
  • 光学电路的设计设计.

背景情况:

  • 超级电子电路将电子集成电路概念适应光学和光子学.
  • 超表面为新的光学纳米电路设计提供了一个平台.
  • 通过紧的光学元件实现高选择性过是关键的挑战.

研究的目的:

  • 引入一种分散合成的通用方法,用于高选择性过的元表面.
  • 为了证明在metatronics中使用 metasurface分散实现块状电路元件.
  • 使用堆叠的元表面设计具有近矩形响应的光学过器.

主要方法:

  • 理论和数值演示的 metasurface分散量身定制,以模仿块化元素.
  • 应用Butterworth过器设计原则到金属表面堆叠.
  • 拟议方法与传统光学波器设计的比较.

主要成果:

  • 成功合成了超表面分散,以实现一次性电路元件.
  • 通过堆叠设计的元表面来展示近矩形的过反应.
  • 通过简单而高效的组装过程实现了高选择性和广泛的带外排斥.

结论:

  • 拟议的分散合成方法使高性能光学过器的高效设计成为可能.
  • 基于metasurface的metatronics为集成光学电路提供了一个简化的范式.
  • 这种方法为未来的光子集成电路和芯片提供了令人兴奋的可能性.