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Linearity, intermodulation distortion and ACLR in outphasing amplifiers
Ericsson AB; Linköpings universitet.
Linköpings universitet.
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för elektronik, matematik och naturvetenskap, Elektronik. Chalmers.
Chalmers.
2013 (engelsk)Inngår i: 2013 IEEE MTT-S International Microwave Symposium Digest, IEEE conference proceedings, 2013, artikkel-id 6697584Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The distortion from amplitude and phase imbalance in outphasing amplifiers is discussed. The relation between dynamic range (DR) and suppression of distortion is shown to approximately follow a simple linear relationship depending on the DR. Approximate relations between adjacent channel leakage power ratio (ACLR) for different kinds of commonly used communication signals and two-tone intermodulation distortion are given. Relations between loss in output power and reduction of DR as functions of duty cycle in switching-based outphasing amplifiers are also given. An approximate method to evaluate the possible performance of digital pre-distortion (DPD) is also given by considering a DPD capable of correcting all distortions except amplitude imbalance. The predicted performance is compared to the performance obtained using a DPD-model found in the literature. The results show that the method is in good agreement, demonstrating that the proposed method can be used for design and evaluation of predistorted outphasing amplifiers. 

sted, utgiver, år, opplag, sider
IEEE conference proceedings, 2013. artikkel-id 6697584
Serie
IEEE MTT-S International Microwave Symposium Digest, ISSN 0149-645X
Emneord [en]
CMOS, Nonlinear distortion, Power amplifier, Predistortion, Adjacent channel leakage power ratios, Approximate methods, Communication signals, Design and evaluations, Digital predistortion, Pre-distortion, Predicted performance, Simple linear relationship, CMOS integrated circuits, Power amplifiers, Switching functions, Intermodulation distortion
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Identifikatorer
URN: urn:nbn:se:hig:diva-17936DOI: 10.1109/MWSYM.2013.6697584ISI: 000369754300254Scopus ID: 2-s2.0-84893262922ISBN: 978-146736176-7 (tryckt)OAI: oai:DiVA.org:hig-17936DiVA, id: diva2:762216
Konferanse
2013 IEEE MTT-S International Microwave Symposium Digest, MTT 2013, 2-7 June 2013, Seattle, WA
Tilgjengelig fra: 2014-11-11 Laget: 2014-11-11 Sist oppdatert: 2018-03-13bibliografisk kontrollert

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Totalt: 405 treff
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