基于滤波器组并行交替型ADC系统通道失配误差的分析

被引：4

作者：

李玉生

安琪

机构：

[1] 中国科学技术大学近代物理系快电子学实验室

来源：

中国科学技术大学学报 | 2006年 / 09期

关键词：

并行交替型ADC; 偏置误差; 增益误差; 时间相位误差; 信纳比; 无伪波动态范围;

D O I：

暂无

中图分类号：

TN713 [滤波技术、滤波器]; TN911.6 [信号分析];

学科分类号：

080401 ; 080402 ;

摘要：

通道失配误差(如偏置误差、增益误差和时间相位误差)严重降低了并行交替型ADC(time-interleaved ADC,TIADC)系统的信纳比.我们给出了基于滤波器组的三种通道失配误差详尽的分析,表明增益误差和时间相位误差相互影响,而偏置误差则单独起作用;同时对在信号分析领域占重要地位的正弦信号进行了分析,给出了通道失配误差的频谱图像;并进一步推导了信纳比的公式和无伪波动态范围的公式;给出了时钟抖动和量化噪声对TIADC的影响.这些公式可为TIADC通道失配误差的容忍范围提供参考,也可为消除TIADC通道失配误差提供理论依据.

引用

页码：995 / 1000

页数：6

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