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A Parameter-Reduced Volterra Model for Dynamic RF Power Amplifier Modeling based on Orthonormal Basis Functions
Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för elektronik.
Högskolan i Gävle, Institutionen för teknik och byggd miljö, Ämnesavdelningen för elektronik.ORCID-id: 0000-0003-2887-049x
2007 (engelsk)Inngår i: International Journal of RF and Microwave Computer-Aided Engineering, ISSN 1096-4290, E-ISSN 1099-047X, Vol. 17, nr 6, s. 542-551Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A nonlinear dynamic behavioral model for radio frequency power amplifiers is presented. It uses orthonormal basis functions, Kautz functions, with complex poles that are different for each nonlinear order. It has the same general properties as Volterra models, but the number of parameters is significantly smaller. Using frequency weighting the out-of-band model error can be reduced. Using experimental data it was found that the optimal poles were the same for different input powers and for the different nonlinear orders. The optimal poles were also the same for direct and inverse models, which could be explained theoretically to be a general property of nonlinear systems with negligible linear memory effects. The model can be used as either a direct or inverse model with the same model error for power amplifiers with negligible linear memory effects.

sted, utgiver, år, opplag, sider
2007. Vol. 17, nr 6, s. 542-551
Emneord [en]
Inverse problems; Nonlinear distortion; Orthogonal functions; Parameter reduction; Power amplifiers; Radio transmitters
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Identifikatorer
URN: urn:nbn:se:hig:diva-2373DOI: 10.1002/mmce.20253ISI: 000250212400004Scopus ID: 2-s2.0-35948995334OAI: oai:DiVA.org:hig-2373DiVA, id: diva2:119035
Tilgjengelig fra: 2008-06-16 Laget: 2008-06-16 Sist oppdatert: 2018-03-28bibliografisk kontrollert
Inngår i avhandling
1. Radio Frequency Power Amplifiers: Behavioral Modeling, Parameter-Reduction, and Digital Predistortion
Åpne denne publikasjonen i ny fane eller vindu >>Radio Frequency Power Amplifiers: Behavioral Modeling, Parameter-Reduction, and Digital Predistortion
2007 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Stockholm: Royal Institute of Technology, 2007. s. 59
Serie
Trita-EE, ISSN 1653-5146 ; 2007:010
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urn:nbn:se:hig:diva-3571 (URN)978-91-7178-589-3 (ISBN)
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(engelsk)
Tilgjengelig fra: 2009-01-22 Laget: 2009-01-21 Sist oppdatert: 2018-03-13bibliografisk kontrollert

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Isaksson, MagnusRönnow, Daniel

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