{"title":"New Outphasing Amplifier Mixed-Mode Modulation Approach for Improving Efficiency and Gain","authors":"Weiwei Wang;Shichang Chen;Yixi Tang;Jialin Cai;Giovanni Crupi;Quan Xue","doi":"10.1109/LMWT.2024.3428837","DOIUrl":null,"url":null,"abstract":"This letter introduces a novel input excitation approach designed to enhance output back-off (OBO) efficiency and gain by incorporating both amplitude and phase modulations for an outphasing power amplifier (OPA). For the first time, a comprehensive mixed-mode modulation approach is presented. To validate the proposed method, a prototype OPA operating at 2.6 GHz is designed as the testing benchmark. Experimental results confirm that the power added efficiency (PAE) at 9 dB OBO point reaches 72.56% under the proposed modulation, achieving an 18.76% improvement over the classic modulation. The gain remains relatively stable, ranging from 10.7 to 12.1 dB across a large OBO range.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 9","pages":"1095-1098"},"PeriodicalIF":0.0000,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE microwave and wireless technology letters","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10612825/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
This letter introduces a novel input excitation approach designed to enhance output back-off (OBO) efficiency and gain by incorporating both amplitude and phase modulations for an outphasing power amplifier (OPA). For the first time, a comprehensive mixed-mode modulation approach is presented. To validate the proposed method, a prototype OPA operating at 2.6 GHz is designed as the testing benchmark. Experimental results confirm that the power added efficiency (PAE) at 9 dB OBO point reaches 72.56% under the proposed modulation, achieving an 18.76% improvement over the classic modulation. The gain remains relatively stable, ranging from 10.7 to 12.1 dB across a large OBO range.
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