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High-Efficiency Power Amplifier Using an Active Second-Harmonic Injection Technique Under Optimized Third-Harmonic Termination

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dc.contributor.authorSeo, Mincheol-
dc.contributor.authorLee, Hwiseob-
dc.contributor.authorGu, Jehyeon-
dc.contributor.authorKim, Hyungchul-
dc.contributor.authorHam, Junghyun-
dc.contributor.authorChoi, Wooyeol-
dc.contributor.authorYun, Yanghun-
dc.contributor.authorKenneth, K. O.-
dc.contributor.authorYang, Youngoo-
dc.date.accessioned2024-04-30T01:22:46Z-
dc.date.available2024-04-30T01:22:46Z-
dc.date.created2024-04-26-
dc.date.created2024-04-26-
dc.date.issued2014-08-
dc.identifier.citationIEEE Transactions on Circuits and Systems II: Express Briefs, Vol.61 No.8, pp.549-553-
dc.identifier.issn1549-7747-
dc.identifier.urihttps://hdl.handle.net/10371/199994-
dc.description.abstractThis brief presents an active second-harmonic injection technique to improve the efficiency and bandwidth for high-efficiency power amplifiers (PAs). An optimum third-harmonic termination condition was examined for higher efficiency after the second-harmonic injection using a multiharmonic load-pull simulation. It was determined that the optimum third-harmonic termination is the same as that of the inverse class-F PA. Based on this result, a high-efficiency PA with an optimized third-harmonic termination for the second-harmonic injection was designed for a center frequency of 1 GHz as a main amplifier. The overall system requires an auxiliary second-harmonic amplifier and a diplexer between the main and auxiliary PAs. The PA with an optimized third-harmonic termination for the second-harmonic injection was implemented using a 10-W GaN high-electron-mobility transistor for both the main and auxiliary power stages. Compared with the PA without second-harmonic injection, the bandwidth with a power-added efficiency of more than 80% is extended from 60 (960-1020 MHz) to 180 MHz (880-1060 MHz) after the second-harmonic injection.-
dc.language영어-
dc.publisherInstitute of Electrical and Electronics Engineers-
dc.titleHigh-Efficiency Power Amplifier Using an Active Second-Harmonic Injection Technique Under Optimized Third-Harmonic Termination-
dc.typeArticle-
dc.identifier.doi10.1109/TCSII.2014.2327382-
dc.citation.journaltitleIEEE Transactions on Circuits and Systems II: Express Briefs-
dc.identifier.wosid000341575000001-
dc.identifier.scopusid2-s2.0-84930638548-
dc.citation.endpage553-
dc.citation.number8-
dc.citation.startpage549-
dc.citation.volume61-
dc.description.isOpenAccessN-
dc.contributor.affiliatedAuthorChoi, Wooyeol-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.subject.keywordAuthorHigh-efficiency power amplifier (PA)-
dc.subject.keywordAuthorinverse class-F PA-
dc.subject.keywordAuthorsecond-harmonic injection-
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  • College of Engineering
  • Department of Electrical and Computer Engineering
Research Area High Frequency Microelectronics, Microwave engineering, Radio Frequency Integrated Circuit, 초고주파 공학, 초고주파 시스템, 초고주파 집적회로

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