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Convention Paper

The Harmonic Content of a Limit Cycle in a DSD Bitstream

Authors: Reiss, Joshua D.; Sandler, Mark B.

AES Convention 116 · Paper 6092 · May 2004

Abstract

This work explores the effects of limit cycles on the frequency content in the DSD bitstream. We show how any periodic bitstream can be expressed as a sum of square waves of various phases with width equal to the sampling period. A Fourier expansion may be used to exactly determine the phases and amplitudes of all spectral content. We thus determine all harmonics that appear in the output, and thus are able to distinguish limit cycles from idle tones. These results are put into the context of recent advances in the theory of limit cycles and idle tones in sigma delta modulators.

Details

Published in
AES Convention 116
AES Convention
116
Paper number
6092
Publication date
May 6, 2004
Session subject
Signal Processing
Affiliation
Queen Mary, University of London, London, UK (See document for exact affiliation information.)
Type
Convention Paper