Design of Magnitude Preserving Analog-to-Digital Converter

Antonio PETRAGLIA; Sanjit K. MITRA

Design of Magnitude Preserving Analog-to-Digital Converter

Antonio PETRAGLIA, Sanjit K. MITRA

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A new type of analog-to-digital (A/D) converter is introduced. The structure is based on a magnitude-preserving quadrature mirror filter (QMF) bank where the analysis bank is composed on IIR switched-capacitor (SC) filters. The analog output samples of the analysis filters are converted into digital form using individual A/D converters and combined by an IIR digital filter synthesis filter bank. This A/D converter is useful in applications where only the magnitude of the spectrum of the analog signal needs to be preserved. The structure incorporates the advantages of sub-band coding and reduces considerably the effect of mismatches among the sub-band A/D converters. In addition, the proposed scheme leads to an increase in the conversion speed by a factor of M when an M-channel QMF bank is used. An illustrative example verifying the good performance of the proposed approach is included.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E76-A No.2 pp.149-155

Publication Date: 1993/02/25

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Type of Manuscript: Special Section INVITED PAPER (Special Section on High-Speed Analog Circuits and Signal Processing)

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Antonio PETRAGLIA, Sanjit K. MITRA, "Design of Magnitude Preserving Analog-to-Digital Converter" in IEICE TRANSACTIONS on Fundamentals, vol. E76-A, no. 2, pp. 149-155, February 1993, doi: .
Abstract: A new type of analog-to-digital (A/D) converter is introduced. The structure is based on a magnitude-preserving quadrature mirror filter (QMF) bank where the analysis bank is composed on IIR switched-capacitor (SC) filters. The analog output samples of the analysis filters are converted into digital form using individual A/D converters and combined by an IIR digital filter synthesis filter bank. This A/D converter is useful in applications where only the magnitude of the spectrum of the analog signal needs to be preserved. The structure incorporates the advantages of sub-band coding and reduces considerably the effect of mismatches among the sub-band A/D converters. In addition, the proposed scheme leads to an increase in the conversion speed by a factor of M when an M-channel QMF bank is used. An illustrative example verifying the good performance of the proposed approach is included.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e76-a_2_149/_p

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@ARTICLE{e76-a_2_149,
author={Antonio PETRAGLIA, Sanjit K. MITRA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Design of Magnitude Preserving Analog-to-Digital Converter},
year={1993},
volume={E76-A},
number={2},
pages={149-155},
abstract={A new type of analog-to-digital (A/D) converter is introduced. The structure is based on a magnitude-preserving quadrature mirror filter (QMF) bank where the analysis bank is composed on IIR switched-capacitor (SC) filters. The analog output samples of the analysis filters are converted into digital form using individual A/D converters and combined by an IIR digital filter synthesis filter bank. This A/D converter is useful in applications where only the magnitude of the spectrum of the analog signal needs to be preserved. The structure incorporates the advantages of sub-band coding and reduces considerably the effect of mismatches among the sub-band A/D converters. In addition, the proposed scheme leads to an increase in the conversion speed by a factor of M when an M-channel QMF bank is used. An illustrative example verifying the good performance of the proposed approach is included.},
keywords={},
doi={},
ISSN={},
month={February},}

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TY - JOUR
TI - Design of Magnitude Preserving Analog-to-Digital Converter
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 149
EP - 155
AU - Antonio PETRAGLIA
AU - Sanjit K. MITRA
PY - 1993
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E76-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 1993
AB - A new type of analog-to-digital (A/D) converter is introduced. The structure is based on a magnitude-preserving quadrature mirror filter (QMF) bank where the analysis bank is composed on IIR switched-capacitor (SC) filters. The analog output samples of the analysis filters are converted into digital form using individual A/D converters and combined by an IIR digital filter synthesis filter bank. This A/D converter is useful in applications where only the magnitude of the spectrum of the analog signal needs to be preserved. The structure incorporates the advantages of sub-band coding and reduces considerably the effect of mismatches among the sub-band A/D converters. In addition, the proposed scheme leads to an increase in the conversion speed by a factor of M when an M-channel QMF bank is used. An illustrative example verifying the good performance of the proposed approach is included.
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