Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2009. / Although 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.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/3972 |
| Date | 03 1900 |
| Creators | Koeslag, Francois |
| Contributors | Mouton, H. du T., Beukes, H. J., University of Stellenbosch. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : University of Stellenbosch |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | University of Stellenbosch |
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