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

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 m...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2008-11, Vol.55 (11), p.1154-1158
Main Authors: Johansson, H., Lowenborg, P.
Format: Article
Language:English
Subjects:
Analog-digital conversion
Calibration
Circuits
Compensation
Compensation filters
Converters
Costs
Design engineering
Errors
Filters
Frequency conversion
Frequency estimation
Frequency response
frequency response mismatch errors
Interleaved codes
Least squares method
least-squares design
Mathematical analysis
Matrix converters
Sampling methods
TECHNOLOGY
TEKNIKVETENSKAP
time-interleaved analog-to-digital converters
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Description
Summary: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.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2008.2002567