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相关概念视频

Upsampling01:22

Upsampling

189
Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
189

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相关实验视频

Updated: May 25, 2025

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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低噪音毫米波向下转换技术用于芯片缩放的光学钟.

Shuai Li1,2, Lulu Yan2,3, Enrang Zheng1

  • 1School of Electrical and Control Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.

Sensors (Basel, Switzerland)
|February 26, 2025
PubMed
概括

一个新的毫米波 (MM波) 信号向下转换系统实现了芯片尺寸光学钟的超低相位噪声. 这项技术使高频信号处理成为先进计时应用的关键.

关键词:
芯片缩放的光学时钟下降转换的下降转换.毫米波是一种毫米波.再生频率划分的重建频率划分

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科学领域:

  • 电气工程 电气工程
  • 光学物理学的光学物理学
  • 信号处理 信号处理

背景情况:

  • 芯片缩放的光学时钟需要精确的高频毫米波 (MM波) 信号的频率转换.
  • 现有的系统经常在这些苛刻的水平上扎着相位噪声和频率稳定性.
  • 毫米波技术的进步对于下一代计时和计量学至关重要.

研究的目的:

  • 开发和演示一种新的MM波信号向下转换系统.
  • 为了实现芯片缩放光学时钟应用的超低相位噪声性能.
  • 为了验证系统适用于最先进的光学时钟和微腔光学集成的适用性.

主要方法:

  • 雇佣的模拟再生频率部门.
  • 使用低噪音的分数频率分割技术.
  • 实施了相锁频率划分,用于从100 GHz向100 MHz和10 MHz的信号下调转换.

主要成果:

  • 实现的相位噪声水平为 -117 dBc/Hz @100 Hz和 -133 dBc/Hz @1 kHz,用于100 MHz输出.
  • 记录的相位噪声为 -124 dBc/Hz @100 Hz和 -143 dBc/Hz @1 kHz,用于10 MHz输出.
  • 显示出优异的频率稳定性,在两种输出频率下,在10,000秒内达到10-16级.

结论:

  • 开发的MM波下转换系统成功地满足了严格的相位噪声和频率稳定性要求.
  • 该系统非常适合与先进的基于芯片的光学时钟和微腔光学进行集成.
  • 这项工作是实现高性能,紧的光学计时解决方案的重要一步.