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

Autor
Vizarreta, P.; Gilabert, Pere L.; Montoro, G.
Tipus d'activitat
Article en revista
Revista
Frequenz
Data de publicació
2012-12-12
Volum
66
Número
11/12
Pàgina inicial
323
Pàgina final
329
DOI
https://doi.org/10.1515/freq-2012-0101 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/17549 Obrir en finestra nova
URL
http://www.degruyter.com/dg/viewarticle/j$002ffreq.2012.66.issue-11-12$002ffreq-2012-0101$002ffreq-2012-0101.xml Obrir en finestra nova
Resum
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 incorpora...
Citació
Vizarreta, P.; Gilabert, Pere L.; Montoro, G. Slew-rate and efficiency trade-off in slow envelope tracking power amplifiers. "Frequenz - Journal of RF-Engineering and Telecommunications", 12 Desembre 2012, vol. 66, núm. 11/12, p. 323-329.
Paraules clau
amplifier distortion, efficiency, envelope amplifier, envelope tracking, envelope-dependent digital predistortion, slew-rate
Grup de recerca
CSC - Components and Systems for Communications Research Group

Participants