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:	Ronan Farrell
Date Deposited:	06 Jul 2018 15:07
Publisher:	IEEE
Refereed:	Yes
Funders:	Science Foundation Ireland (SFI)
URI:	https://ieeexplore.ieee.org/
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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