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Bandpass Sigma Delta A-D Conversion

  • A. M. Thurston
  • T. H. Pearce
  • M. D. Higman
  • M. J. Hawksford

Abstract

Modern high performance radio systems increasingly rely on digital signal processing techniques. In many cases performance is limited by the A-D conversion process, particularly where high linearity is required. In this paper three examples are presented of bandpass sigma-delta A-D converters which offer a cost effective means of encoding narrowband IF signals to a high linearity and with low spurious content.

Keywords

Loop Filter Sigma Delta Modulator Noise Transfer Function Noise Shaping Spurious Free Dynamic Range 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    T.H. Pearce and A.C. Baker, “Analogue to Digital HF Radio Receivers”, IEE Colloquium on Systems Aspects and Applications of ADC’s for Radar, Sonar and Communications, November 1987, Digest no.1987/92.Google Scholar
  2. [2]
    T.H. Pearce and M.J. Jay, “Performance Assessment for Digitally Implemented Radio Receivers”, IEE Conference on Radio Receivers and Associated Systems, Cambridge, July 1990, Conference Publication no. 325, pp. 113–117.Google Scholar
  3. [3]
    P.J.A. Naus, E.C. Dijkmans, E.F. Stikvoort, A.J. McKnight, D.J. Holland, W. and Bradinal, “A CMOS Stereo 16-bit D-A Converter for Digital Audio”, IEEE J. Solid-State Circuits, vol. SC-22, no. 3, June 1987, pp. 390–395.CrossRefGoogle Scholar
  4. [4]
    M.J. Hawksford, “Multi-Level to 1-bit Transformations for Applications in Digital-to-Analogue Converters Using Oversampling and Noise Shaping”, Proc. Institute of Acoustics, vol.10, part 7, 1988.Google Scholar
  5. [5]
    A.M. Thurston, T.H. Pearce, and M.J. Hawksford, “Bandpass Implementation of the Sigma-Delta A-D Conversion Technique”, IEE International Conference on Analogue to Digital and Digital to Analogue Conversion, Swansea, September 1991, Conference Publication no. 343, pp. 81–86.Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1993

Authors and Affiliations

  • A. M. Thurston
    • 1
  • T. H. Pearce
    • 1
  • M. D. Higman
    • 1
  • M. J. Hawksford
    • 2
  1. 1.GEC-Marconi Research CentreChelmsfordUK
  2. 2.University of EssexColchesterUK

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