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A study on multi-level PWM and asynchronous Sigma Delta modulations for enhanced bandlimited signal tracking in switching power amplifiers

Author
Garcia, A.; Poveda, A.; Alarcon, E.; Guinjoan, F.
Type of activity
Journal article
Journal
IEEE transactions on circuits and systems I: regular papers
Date of publication
2013-06
Volume
60
Number
6
First page
1621
Last page
1634
DOI
https://doi.org/10.1109/TCSI.2012.2220463 Open in new window
Repository
http://hdl.handle.net/2117/20014 Open in new window
URL
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6497669&queryText%3DA+Study+on+Multi-Level+PWM+and+Asynchronous+Sigma+Delta+Modulations+for+Enhanced+Bandlimited+Signal+Tracking+in+Switching+Power+Amplifiers Open in new window
Abstract
This work deals with multi-level switching amplifiers, in the context of high-efficiency power amplification for signal tracking applications. In particular, this paper evaluates the reduction in the error signal's power due to multi-level power amplification (compared to conventional two-level amplifiers) and compares the performance of two multi-level pulse modulations: PWM and Asynchronous ${{Sigma}} {{Delta}}$ Modulation. First the intrinsic bandwidth limits of multi-level switching amplifie...
Citation
Garcia, A. [et al.]. A study on multi-level PWM and asynchronous Sigma Delta modulations for enhanced bandlimited signal tracking in switching power amplifiers. "IEEE transactions on circuits and systems I: regular papers", Juny 2013, vol. 60, núm. 6, p. 1621-1634.
Keywords
Encoding, multi-level PWM, multi-level modulation, multi-level time encoding, power amplifiers, signal analysis
Group of research
EPIC - Energy Processing and Integrated Circuits
PERC-UPC - Power Electronics Research Centre
SEPIC - Power and Control Electronics Systems

Participants