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dc.contributor.authorBenito Temprano, Adán Luis
dc.contributor.authorRuiz Lavín, María de las Nieves 
dc.contributor.authorGarcía García, José Ángel 
dc.contributor.authorGilabert Pinal, Pere Lluís
dc.contributor.authorMontoro López, Gabriel
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2015-11-11T16:00:13Z
dc.date.available2015-11-11T16:00:13Z
dc.date.issued2015-09
dc.identifier.urihttp://hdl.handle.net/10902/7634
dc.description.abstractA UHF outphasing transmitter, based on parallel-circuit Class E power amplifiers (PAs) and implementing a constant-gain envelope tracking strategy, is presented in this paper. Using the nonlinear model of the selected GaN HEMT device, the drain terminating and biasing networks are designed to provide near optima impedance values at the fundamental and higher order harmonics. A relatively wideband performance, 630-890 MHz, is obtained with an efficiency above 80%, besides being amenable for load-modulation. Thanks to the use of a series Chireix combiner, followed by an impedance transformer, an outphasing scheme is implemented. Once characterized in a pure output power phase-coding regime, the observed limitation in dynamic range is overcome by operating the amplifiers in a sort of continuous class J mode, while introducing a constant gain load envelope tracking strategy. A 1c-WCDMA signal, with a peak-to-average power ratio of 8.4 dB is shown to be reproduced, satisfying the linearity requirements, with an average power efficiency of 58%.es_ES
dc.format.extent4 p.es_ES
dc.language.isospaes_ES
dc.rights© 2015 URSI Españaes_ES
dc.sourceURSI 2015, XXX Simposium Nacional de la Unión Científica Internacional de Radio, Pamplonaes_ES
dc.titleSeguimiento de la envolvente con ganancia constante mediante esquema outphasing en tecnología GaN HEMTes_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.rights.accessRightsopenAccesses_ES
dc.type.versionpublishedVersiones_ES


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