张仲侯
北京工业大学微电子学院 北京 100124
基金项目:国家自然科学基金(62074010)，北京市教委科技项目(KM201810005022)
详细信息
作者简介:刘素娟：女，1978年生，副教授，研究方向为模数混合集成电路设计
张仲侯：男，1995年生，硕士生，研究方向为模数混合集成电路设计
通讯作者:刘素娟 liusujuan@bjut.edu.cn
中图分类号:TN911.72计量
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被引次数:0
出版历程
收稿日期:2020-10-16
修回日期:2021-06-07
网络出版日期:2021-07-15
刊出日期:2021-12-21
Adaptive Nonlinear Mismatch Calibration Technique for TIADC Based on Memory Polynomial Model
Sujuan LIU,,Zhonghou ZHANG
College of Microelectronics, Beijing University of Technology, Beijing 100124, China
Funds:The National Natural Science Foundation of China (62074010), The Scientific Research Project of Beijing Educational Committee (KM201810005022)
摘要
摘要:为了提高时间交织模数转换器(TIADC)的有效分辨率，需要对其通道之间的线性/非线性失配误差进行估计和补偿。该文针对M通道TIADC的带有记忆效应的非线性失配误差提出了一种自适应盲校正算法。通过子通道重构结构(SCR)重构非线性误差信号，并通过滤波降采样最小均方(FDLMS)算法估计非线性失配误差系数。实验仿真结果表明，该方法可以有效校正带有记忆效应的非线性失配误差，并且可以大大降低实现难度和硬件资源消耗。
关键词:时间交织模数转换器/
非线性失配误差/
子通道重构结构/
自适应盲校正
Abstract:To improve the effective resolution of the Time-Interleaved Analog-to-Digital Converter (TIADC), it is necessary to estimate and compensate the linear/non-linear mismatch error between its channels. An adaptive blind correction algorithm is proposed for the non-linear mismatch error of M-channel TIADC with memory effect. The nonlinear error signal is reconstructed through the Sub-Channel Reconstruction (SCR) structure, and the nonlinear mismatch error coefficient is estimated through the Filtered-Down-sampled Least Mean Square (FDLMS) algorithm. Experimental simulation results show that this method can effectively correct the non-linear mismatch error with memory effect, and can greatly reduce the difficulty of implementation and the consumption of hardware resources.
Key words:Time-Interleaved Analog-to-Digital Converter (TIADC)/
Nonlinear mismatch error/
Sub-Channel Reconstruction (SCR)/
Adaptive blind calibration
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