A detailed analysis of the imperfections of pulsewidth modulated waveforms on the output stage of a class D audio amplifier

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dc.contributor.advisorMouton, H. du T.en_ZA
dc.contributor.advisorBeukes, H. J.en_ZA
dc.contributor.authorKoeslag, Francoisen_ZA
dc.contributor.otherUniversity of Stellenbosch. Faculty of Engineering. Dept. of Electrical and Electronic Engineering.
dc.date.accessioned2009-03-02T11:47:06Zen_ZA
dc.date.accessioned2010-08-13T13:10:36Z
dc.date.available2009-03-02T11:47:06Zen_ZA
dc.date.available2010-08-13T13:10:36Z
dc.date.issued2009-03en_ZA
dc.descriptionThesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.en_ZA
dc.description.abstractAlthough the Class D topology offers several advantages, its use in audio amplification has previously been limited by the lack of competitiveness in fidelity compared to its linear counterparts. During the past decade, technological advances in semiconductor technology have awakened new interest since competitive levels of distortion could now be achieved. The output stage of such an amplifier is the primary limiting factor in its performance. In this dissertation, four non-ideal effects existing in this stage are identified and mathematically analysed. The analytical analysis makes use of a well-established mathematical model, based on the double Fourier series method, to model the imperfections introduced into a naturally sampled pulsewidth modulated waveform. The analysis is complemented by simulation using a strategy based on Newton’s numerical method. The theory is verified by a comparison between the analytical-, simulated- and experimental results.en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/3972
dc.language.isoenen_ZA
dc.publisherStellenbosch : University of Stellenbosch
dc.rights.holderUniversity of Stellenbosch
dc.subjectClass D Audioen_ZA
dc.subjectPulse timing errorsen_ZA
dc.subjectDissertations -- Electrical and electronic engineeringen
dc.subjectTheses -- Electrical and electronic engineeringen
dc.subject.lcshPulse-duration modulationen_ZA
dc.subject.lcshAudio amplifiersen_ZA
dc.titleA detailed analysis of the imperfections of pulsewidth modulated waveforms on the output stage of a class D audio amplifieren_ZA
dc.typeThesisen_ZA
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