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Adaptive equalization for calibration of subband hybrid filter banks A/D converters

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4 Author(s)
Zhiguo Song ; Dept. of Signal Process. & Electron. Syst., Ecole Super. d''Electricite, Gif-sur-Yvette, France ; Lelandais-Perrault, C. ; Poulton, D. ; Benabes, P.

Hybrid Filter Banks (HFB) A/D converters (ADC) are attractive to software-defined radio application, however their high sensitivity to analog imperfections is still a bottleneck for their realization. In this paper, adaptive equalization is applied for calibrating a subband HFB ADC. Thus, the synthesis filter coefficients are iteratively adjusted for compensating the mismatches between the analog part and the digital part. Simulations show that the robustness of subband HFB ADC is therefore improved.

Published in:

Circuit Theory and Design, 2009. ECCTD 2009. European Conference on

Date of Conference:

23-27 Aug. 2009