Esslinger, R. and Gruhler, G. and Stewart, R.W. (2003) Feedback strategies in digitally controlled class-D amplifiers. In: 2003 AES Convention 114, 2003-03-01.
Full text not available in this repository. (Request a copy from the Strathclyde author)Abstract
A fundamental problem in digitally controlled class-D power amplifiers is the distortion of the amplified pulse signal by imperfections of the power transistors and the analogue output circuitry. The only way to overcome this is to provide error correction by feedback. With a pulse-modulated signal (either PWM or Sigma-Delta-Modulation) this correction can be performed by changing the pulse edge timing, as it is done in some existing solutions. If error correction during the pulse generation inside of the digital system is desired, an Analogue- to Digital converter is needed. In this paper the most important solutions done so far are reviewed and further ideas based on feedback into the digital system are introduced.
| Item type: | Conference or Workshop Item (Paper) |
|---|---|
| ID code: | 39202 |
| Keywords: | feedback strategies, digitally controlled, class-d amplifiers, Electrical engineering. Electronics Nuclear engineering |
| Subjects: | Technology > Electrical engineering. Electronics Nuclear engineering |
| Department: | Faculty of Engineering > Electronic and Electrical Engineering |
| Related URLs: | |
| Depositing user: | Pure Administrator |
| Date Deposited: | 17 Apr 2012 14:19 |
| Last modified: | 04 Oct 2012 17:12 |
| URI: | http://strathprints.strath.ac.uk/id/eprint/39202 |
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