Title :
A background extraction technique for bandwidth mismatch error in a two-channel time-interleaved ADC
Author :
Ghanem, F. ; Desgreys, Patricia ; Loumeau, Patrick ; Biallais, A. ; Gandy, Philippe
Author_Institution :
LTCI, Telecom-ParisTech, Paris, France
Abstract :
Bandwidth Mismatch between channels sampling circuits in a time-interleaved analog-to-digital data converter (TI ADC) causes undesirable distortions in the output spectrum. This error interferes in gain and phase with the static gain and clock skew errors respectively, which makes its extraction much difficult. In this paper, an online extraction technique of the bandwidth mismatch error is proposed. Furthermore, a correction solution is presented to validate this extraction.
Keywords :
analogue-digital conversion; distortion; polynomial approximation; radio networks; TI ADC; background extraction technique; bandwidth mismatch error; channels sampling circuits; clock skew errors; error interferes; online extraction technique; output spectrum distortion; static gain; time-interleaved analog-to-digital data converter; two-channel time-interleaved ADC; Approximation methods; Bandwidth; Finite impulse response filter; Mathematical model; Polynomials; Time-interleaved ADC; bandwidth mismatch; error extraction; polynomial approximation;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2012 IEEE 10th International
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-0857-1
Electronic_ISBN :
978-1-4673-0858-8
DOI :
10.1109/NEWCAS.2012.6329029
