A novel family of modulator and power stage structures suitable for digital power amplification is presented. Parallel phase-shifted carrier pulse-width modulation (PSCPWM) is a new multilevel modulation method which reduces switching noise considerably and increases the effective sampling frequency. A general theoretical analysis of the tonal behavior of PSCPWM is provided, and several examples illustrate the new possibilities.

Author: Nielsen, Karsten
Affiliations: Bang & Olufsen, Denmark ; Institute of Automation, Technical University of Denmark(See document for exact affiliation information.)
AES Convention: 102 (March 1997) Paper Number: 4447
Publication Date: March 1, 1997
Subject: Signal Processing

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