Constant-gain envelope tracking in a UHF outphasing transmitter based on continuousmode class-E GaN HEMT PAs

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/98613

dc.contributor	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.contributor	Universitat Politècnica de Catalunya. CSC - Components and Systems for Communications Research Group
dc.contributor.author	Ruiz Lavin, Maria de las Nieves
dc.contributor.author	Benito, Adán L.
dc.contributor.author	Pérez Cisneros, J. R.
dc.contributor.author	Gilabert Pinal, Pere Lluís
dc.contributor.author	Montoro López, Gabriel
dc.contributor.author	García, J. A.
dc.date	2016
dc.identifier.citation	Ruiz, M., Benito, A. L., Pérez, J., Gilabert, Pere L., Montoro, G., García, J. Constant-gain envelope tracking in a UHF outphasing transmitter based on continuousmode class-E GaN HEMT PAs. A: IEEE MTT-S International Microwave Symposium. "Proceedings of 2016 IEEE/MTT-S International Microwave Symposium (IMS)". San Francisco, CA: Institute of Electrical and Electronics Engineers (IEEE), 2016, p. 1-4.
dc.identifier.citation	10.1109/MWSYM.2016.7540413
dc.identifier.uri	http://hdl.handle.net/2117/98613
dc.language.iso	eng
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation	http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7540413
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica
dc.subject	Broadband communication systems
dc.subject	Radio--Transmitters and transmission
dc.subject	Broadband networks
dc.subject	Code division multiple access
dc.subject	Field effect analogue integrated circuits
dc.subject	Gallium compounds
dc.subject	HEMT integrated circuits
dc.subject	III-V semiconductors
dc.subject	Impedance convertors
dc.subject	Phase coding
dc.subject	Radio transmitters
dc.subject	UHF integrated circuits
dc.subject	UHF power amplifiers
dc.subject	Wide band gap semiconductors
dc.subject	Constant-gain envelope tracking
dc.subject	UHF outphasing transmitter
dc.subject	Continuous-mode class-E HEMT PA
dc.subject	Continuous-mode class-E power amplifier
dc.subject	ET strategy
dc.subject	Drain terminating
dc.subject	Biasing network
dc.subject	Higher order harmonics
dc.subject	High-efficiency wideband performance
dc.subject	Load modulation
dc.subject	Compact outphasing scheme
dc.subject	Series Chireix combiner
dc.subject	Impedance transformer
dc.subject	Phase coding regime
dc.subject	Constant-gain trajectory
dc.subject	Load impedance
dc.subject	WCDMA signal
dc.subject	Peak-to-average power ratio
dc.subject	PAPR
dc.subject	Frequency 630 MHz to 890 MHz
dc.subject	Telecomunicació de banda ampla, Sistemes de
dc.subject	Ràdio -- Transmissors i transmissió
dc.title	Constant-gain envelope tracking in a UHF outphasing transmitter based on continuousmode class-E GaN HEMT PAs
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	A UHF outphasing transmitter, based on continuous-mode class-E power amplifiers (PAs) and implementing a constant-gain envelope tracking (ET) strategy, is presented in this paper. Drain terminating and biasing networks are designed to provide near optima impedance values at the fundamental and higher order harmonics to the selected GaN HEMT device. A high-efficiency wideband performance, 80% for a 630-890 MHz range, is obtained, besides being amenable for load-modulation through a compact outphasing scheme, incorporating a series Chireix combiner and an impedance transformer. 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 forcing the load impedance to follow a constant-gain trajectory. A 1c-WCDMA signal, with peak-to-average power ratio (PAPR) of 8.4 dB is shown to be reproduced, satisfying the linearity requirements, with an average efficiency of 58%.
dc.description.abstract	Peer Reviewed

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