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    Pulse width modulation of multilevel delta-sigma output for class S power amplifier


    Podsiadlik, Tomasz and Dooley, John and Canniff, Alan and Farrell, Ronan (2009) Pulse width modulation of multilevel delta-sigma output for class S power amplifier. In: 2009 European Conference on Circuit Theory and Design. IEEE, pp. 457-460. ISBN 9781424438969

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    Abstract

    In this paper a platform that implements the digital processing and RF carrier generation for class S PA operation is presented. This implementation consists of a bandpass delta sigma modulator (DSM) with a multi-level quantizer followed by a pulse width modulator and frequency upconversion stage. The principle of operation is described and validation is provided through simulation and experimental measurements on a prototype of the modulator. It is shown that the output from the new modulator can achieve significant improvements in SNR performance compared to a two level DSM with little added computational overhead.

    Item Type: Book Section
    Additional Information: Research presented in this paper was funded by a Centre for Telecommunications Value-Chain Research (SFI 03/CE3/I405) by Science Foundation Ireland under the National Development Plan. The authors gratefully acknowledge this support.457
    Keywords: delta-sigma modulation; frequency convertors; power amplifiers; pulse width modulation; quantisation (signal);
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Item ID: 9666
    Identification Number: https://doi.org/10.1109/ECCTD.2009.5275017
    Depositing User: Dr. Ronan Farrell
    Date Deposited: 06 Jul 2018 15:07
    Publisher: IEEE
    Refereed: Yes
    Funders: Science Foundation Ireland (SFI)
    URI:

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