• DocumentCode
    1514926
  • Title

    Multi-stage noise band cancellation ΣΔ modulator for digitisation of distorted signals

  • Author

    Pham, Dang-Kien Germain ; Desgreys, Patricia ; Loumeau, Patrick ; Ridgers, T.

  • Author_Institution
    Inst. Telecom, Paris, France
  • Volume
    48
  • Issue
    10
  • fYear
    2012
  • Firstpage
    560
  • Lastpage
    562
  • Abstract
    A new sigma-delta modulator (ΣΔM) architecture is proposed to digitise wideband distorted signals. It combines frequency band decomposition with bandpass (BP) ΣΔ converters and cascaded architectures. The novelties are the use of the residual signal transfer function at the output of the first summing node in a classical BP ΣΔ that is an almost free signal shaping in the ΣΔM and the digitisation of the shaped noise in order to cancel it out in a particular band.
  • Keywords
    circuit noise; convertors; sigma-delta modulation; ΣΔ modulator; bandpass ΣΔ converters; cascaded architectures; digitise wideband distorted signals; frequency band decomposition; multistage noise band cancellation; sigma-delta modulator;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2012.0533
  • Filename
    6198519
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1514926