利用ADC测量皮秒量级时钟抖动大小及分布  

Measurement of clock jitter and distribution with pico-second resolution using ADC

作　　者：吴义华[1] 杨俊峰[1] 王砚方[1] 邓美彩[1] 

机构地区：[1]中国科学技术大学近代物理系,安徽合肥230026

出　　处：《江苏大学学报（自然科学版）》2006年第3期254-257,共4页Journal of Jiangsu University：Natural Science Edition

基　　金：国家"863"计划资助项目(2001AA602011-1)

摘　　要：研究了时钟抖动与正弦信号的采样序列之间的关系,并在正弦信号参数估计法的基础上,提出一种利用ADC采样测量皮秒量级的时钟抖动大小和分布的新方法.同时,还从理论上分析了参数估计误差和信号幅度噪声对测量时钟抖动的影响,并进行了仿真验证.结果表明,采用参数估计测量法测量时钟抖动,不但能够准确地测出抖动的大小,而且能够测出抖动的分布.The relationship between the clock jitter and the sampling sequence of a sine wave is studied, and a new method to measure the jitter and distribution of a clock signal with pico-second resolution is proposed using ADC sampling based on estimating method of the parameters in sine signal. At the same time, the influence of the parameter-estimating error and the noise on amplitude of the signal are discussed, and simulation was performed to validate the analysis result. The result shows that the parameter-estimating method can measure not only the value of jitter, but also its distribution.

关 键 词：数据转换 时钟抖动 ADC 参数估计 采样 仿真 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]