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Article: Design of a fifth-order analog predistorter for base station HPA of cellular mobile systems

TitleDesign of a fifth-order analog predistorter for base station HPA of cellular mobile systems
Authors
Issue Date2011
Citation
Microwave Journal, 2011, v. 54 n. 8, p. 86-102 How to Cite?
AbstractThis article presents the design of a fifth-order analog predistorterfor use in base station high power amplifiers (HPA). The predistorter employs two intermodulation (IM) signal generators with identical configuration, to individually generate the third- and fifth-order (IM3 and IM5) signals. The amplitudes and phases of the two IM signals generated are adjusted separately for cancellation of the third- and fifth-order intermodulation distortion products (IMDP3 and IMDP5) at the HPA output, making the tuning process of predistortion much easier. The predistorter is designed and studied by computer simulation, using two-tone and π/4-DQPSK signals, centered at 2.2 GHz in a practical base station 100 W HPA. For verification of the design, measurements are carried out on a prototyped-predistorter. Both simulation and measurement results show that very good agreement and excellent linearity improvement of the HPA can be achieved at an output power of 65.6 W.
Persistent Identifierhttp://hdl.handle.net/10722/155652
ISSN
2015 Impact Factor: 0.167
2015 SCImago Journal Rankings: 0.166
References

 

DC FieldValueLanguage
dc.contributor.authorSun, XLen_US
dc.contributor.authorCheung, SWen_US
dc.contributor.authorYuk, TIen_US
dc.date.accessioned2012-08-08T08:34:40Z-
dc.date.available2012-08-08T08:34:40Z-
dc.date.issued2011en_US
dc.identifier.citationMicrowave Journal, 2011, v. 54 n. 8, p. 86-102en_US
dc.identifier.issn0192-6225en_US
dc.identifier.urihttp://hdl.handle.net/10722/155652-
dc.description.abstractThis article presents the design of a fifth-order analog predistorterfor use in base station high power amplifiers (HPA). The predistorter employs two intermodulation (IM) signal generators with identical configuration, to individually generate the third- and fifth-order (IM3 and IM5) signals. The amplitudes and phases of the two IM signals generated are adjusted separately for cancellation of the third- and fifth-order intermodulation distortion products (IMDP3 and IMDP5) at the HPA output, making the tuning process of predistortion much easier. The predistorter is designed and studied by computer simulation, using two-tone and π/4-DQPSK signals, centered at 2.2 GHz in a practical base station 100 W HPA. For verification of the design, measurements are carried out on a prototyped-predistorter. Both simulation and measurement results show that very good agreement and excellent linearity improvement of the HPA can be achieved at an output power of 65.6 W.-
dc.languageengen_US
dc.relation.ispartofMicrowave Journalen_US
dc.titleDesign of a fifth-order analog predistorter for base station HPA of cellular mobile systemsen_US
dc.typeArticleen_US
dc.identifier.emailCheung, SW:swcheung@eee.hku.hken_US
dc.identifier.emailYuk, TI:tiyuk@eee.hku.hken_US
dc.identifier.authorityCheung, SW=rp00102en_US
dc.identifier.authorityYuk, TI=rp00210en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-80052352674en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80052352674&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume54en_US
dc.identifier.issue8en_US
dc.identifier.spage86en_US
dc.identifier.epage102en_US
dc.identifier.scopusauthoridSun, XL=36926307400en_US
dc.identifier.scopusauthoridCheung, SW=7202472784en_US
dc.identifier.scopusauthoridYuk, TI=6603685705en_US

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