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测量和数据校正的频道采样定时步行-Off的光子模拟到数字转换器在信号恢复
Junli Qi1,2,3,4, Xin Chen1, Meicheng Fu1
1College of Science, National University of Defense Technology, Changsha 410073, China.
Micromachines
|February 24, 2024
概括
一种新方法通过纠正时间错误来提高光子模拟数字转换器 (PADC) 的性能. 这种技术显著改善了对高频信号的信号恢复和有效位数 (ENOB).
科学领域:
- 光子学是指光子学的使用方法.
- 电气工程 电气工程
- 信号处理 信号处理
背景情况:
- 光子模拟数字转换器 (PADC) 提供高采样率,但受到道定时失效的影响.
- 频道定时差异会降低信号质量,并降低有效位数 (ENOB).
- 准确的信号恢复在交叉的PADC对于高频应用至关重要.
研究的目的:
- 建立一个双通道,时间波长交叉的PADC系统.
- 提出一种简洁的方法来测量和纠正道采样定时步行.
- 为了提高PADC的信号恢复性能.
主要方法:
- 实施了10.4GSa/s的双通道时间波长交叉PADC系统.
- 开发了一种方法来测量和纠正道采样定时离开.
- 使用转移合成,峰值极限方法 (PLM) 和规范化处理来纠正数据.
主要成果:
- 在12个采样周期的频道采样定时走程中,测量了射频信号.
- 通过100MHz信号的转移合成,ENOB从-0.1051改进到4.0136位.
- 通过使用PLM和规范化,对100MHz信号的ENOB进一步改进至4.5668位.
- 通过使用完整校正方法,实现了21.1 GHz信号的ENOB从-0.9181比特增加到4.1913比特.
结论:
- 拟议的简洁方法有效地测量和纠正道采样计时在间接的PADCs.
- 数据校正技术显著提高了ENOB和信号恢复性能.
- 开发的系统和方法在高频信号转换和恢复方面表现出有效性.
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