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Improved Analogue Class-D Amplifier with Carrier Symmetry Modulation

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 Import into BibTeX
Subject:Signal Processing

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