A novel analogue class-D amplifier has been developed which produces low distortion. The structure follows the well known prior-art class-D structures with negative feedback, but includes modulation of the symmetry of the carrier oscillator waveform by a derivative of the input signal. This compensates a nonlinear phase modulation effect that is intrinsic to the prior-art structures. The improvement is substantial at very low extra cost.

Authors: Candy, Bruce H.; Cox, Stephen M.
Affiliations: Halcro, Torrensville, Australia ; Applied Mathematics, School of Mathematical Sciences, University of Adelaide, Adelaide, Australia(See document for exact affiliation information.)
AES Convention: 117 (October 2004) Paper Number: 6260
Publication Date: October 1, 2004 Import into BibTeX
Subject: Signal Processing
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=12917

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