A Least-Squares Filter Design Technique for the Compensation of Frequency Response Mismatch Errors in Time-Interleaved A/D Converters

Author

Johansson, H?¥kan ; L?¶wenborg, Per

Author_Institution

Dept. of Electr. Eng., Linkoping Univ., Linkoping

Volume

55

Issue

11

fYear

2008

Firstpage

1154

Lastpage

1158

Abstract

This paper introduces a least-squares filter design technique for the compensation of frequency response mismatch errors in M-channel time-interleaved analog-to-digital converters. The overall compensation system is designed by determining M filter impulse responses analytically through M separate matrix inversions. The proposed technique offers an alternative to least-squares techniques that determine all filters simultaneously. Several design examples are included for illustration.

Keywords

analogue-digital conversion; compensation; frequency response; least squares approximations; matrix inversion; transient response; compensation; frequency response mismatch error; impulse response; least-squares filter; matrix inversion; time-interleaved A/D converter; Analog-digital conversion; Calibration; Costs; Filters; Frequency conversion; Frequency estimation; Frequency response; Interleaved codes; Matrix converters; Sampling methods; Compensation filters; frequency response mismatch errors; least-squares design; time-interleaved analog-to-digital converters;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2008.2002567

Filename

4703523