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Slew-rate and efficiency trade-off in slow envelope tracking power amplifiers

Author
Gilabert, Pere L.; Montoro, G.; Vizarreta, P.
Type of activity
Presentation of work at congresses
Name of edition
7th German Microwave Conference
Date of publication
2012
Presentation's date
2012-03-12
Book of congress proceedings
GeMIC 2012 - The 7th German Microwave Conference
First page
1
Last page
4
DOI
https://doi.org/10.1515/freq-2012-0101 Open in new window
Repository
http://hdl.handle.net/2117/19140 Open in new window
URL
http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=06185140 Open in new window
Abstract
This paper presents a study on the trade-off between the envelope's slew-rate and the drain efficiency when slower envelopes are considered to dynamically supply the power amplifier (PA). This paper discusses a method to limit the slew-rate (and consequently the bandwidth) of the signal's envelope. Moreover, since the envelope tracking (ET) technique using a slower version of the original envelope introduces nonlinear distortion, slow envelope dependent predistortion has to be also incorporated ...
Citation
Gilabert, Pere L.; Montoro, G.; Vizarreta, P. Slew-rate and efficiency trade-off in slow envelope tracking power amplifiers. A: German Microwave Conference. "GeMIC 2012 - The 7th German Microwave Conference". 2012, p. 1-4.
Keywords
Amplifier distortion, efficiency, envelope amplifier, envelope tracking, envelope-dependent digital predistortion, slew-rate
Group of research
CSC - Components and Systems for Communications Research Group

Participants