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  • Research Article
  • Open Access

Description of a 2-Bit Adaptive Sigma-Delta Modulation System with Minimized Idle Tones

EURASIP Journal on Advances in Signal Processing20072008:426502

  • Received: 3 June 2007
  • Accepted: 28 October 2007
  • Published:


A 2-bit adaptive sigma delta modulation system that inherently eliminates the idle tones present in conventional and other adaptive sigma delta systems is described. The system incorporates both memory and look-ahead instantaneous step-size estimations and, as shown by computer simulation results apart from eliminating the unwanted idle tones despite dithering, it offers improved SNR performance and extended dynamic range.


  • Information Technology
  • Computer Simulation
  • Quantum Information
  • Modulation System
  • Full Article

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Authors’ Affiliations

Laboratory of Electronics, Department of Physics, University of Athens, Panepistimiopolis, Athens, 157 84, Greece


© E. A. Prosalentis and G. S. Tombras. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.