{"title":"High efficiency GaN class E amplifier for polar transmitter","authors":"M. R. Ghajar, S. Boumaiza","doi":"10.1109/ICSCS.2009.5412570","DOIUrl":null,"url":null,"abstract":"this paper focuses on the design of a high efficiency 10 Watt Class E power amplifier (PA) suitable for polar radio transmitters. The PA prototype, designed using GaN HEMT devices to operate at 2.5 GHz, revealed a Power Added Efficiency (PAE) and an output power of 74% and 38.3dBm, respectively, for a supply voltage equal to 28V. It also demonstrated an excellent suppression of the second and third harmonics in excess of −50 dBc. The measurement of the Class E performance over large range of drain supply voltages confirmed its appropriateness for polar transmitter as a good efficiency was maintained at large output power back-off, i.e. PAE equal to 48% was measured at 11 dB back off.","PeriodicalId":126072,"journal":{"name":"2009 3rd International Conference on Signals, Circuits and Systems (SCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 3rd International Conference on Signals, Circuits and Systems (SCS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSCS.2009.5412570","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
Abstract
this paper focuses on the design of a high efficiency 10 Watt Class E power amplifier (PA) suitable for polar radio transmitters. The PA prototype, designed using GaN HEMT devices to operate at 2.5 GHz, revealed a Power Added Efficiency (PAE) and an output power of 74% and 38.3dBm, respectively, for a supply voltage equal to 28V. It also demonstrated an excellent suppression of the second and third harmonics in excess of −50 dBc. The measurement of the Class E performance over large range of drain supply voltages confirmed its appropriateness for polar transmitter as a good efficiency was maintained at large output power back-off, i.e. PAE equal to 48% was measured at 11 dB back off.
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