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Linearity, intermodulation distortion and ACLR in outphasing amplifiers
Ericsson AB; Linköpings universitet.
Linköpings universitet.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences. Chalmers.
Chalmers.
2013 (English)In: 2013 IEEE MTT-S International Microwave Symposium Digest, IEEE conference proceedings, 2013, 6697584Conference paper, Published paper (Refereed)
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. 

Place, publisher, year, edition, pages
IEEE conference proceedings, 2013. 6697584
Series
IEEE MTT-S International Microwave Symposium Digest, ISSN 0149-645X
Keyword [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
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hig:diva-17936DOI: 10.1109/MWSYM.2013.6697584ISI: 000369754300254Scopus ID: 2-s2.0-84893262922ISBN: 978-146736176-7 (print)OAI: oai:DiVA.org:hig-17936DiVA: diva2:762216
Conference
2013 IEEE MTT-S International Microwave Symposium Digest, MTT 2013, 2-7 June 2013, Seattle, WA
Available from: 2014-11-11 Created: 2014-11-11 Last updated: 2016-07-04Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
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  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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