{"title":"Bandwidth extension of continuous class-F power amplifier with phase-shifted voltage waveform","authors":"Chaoyi Huang, Yuchuan Zhou, Huadong Wang","doi":"10.1109/IWS55252.2022.9977714","DOIUrl":null,"url":null,"abstract":"This paper presents a method for bandwidth extension in high-efficiency power amplifier (PA) design. With a phase shift in voltage waveform of the continuous class-F mode, real part of harmonic impedance is generated to expand the impedance design space at the expense of little lossy of performance. The simulation and measurement, conducted on a broadband PA covering 1.9-3.1 GHz based on the proposed method, show a good agreement with the theory. Measured results show that the fabricated PA has a drain efficiency of 66.5%-75% when delivering 41-42.3 dBm output power with a gain of 11-12.7 dB. Under a 20-MHz LTE signal excitation at 2.6 GHz, the PA exhibits an adjacent channel leakage ratio of -36.5 dBc at an average output power of 35 dBm without linearization.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"144 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE MTT-S International Wireless Symposium (IWS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IWS55252.2022.9977714","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a method for bandwidth extension in high-efficiency power amplifier (PA) design. With a phase shift in voltage waveform of the continuous class-F mode, real part of harmonic impedance is generated to expand the impedance design space at the expense of little lossy of performance. The simulation and measurement, conducted on a broadband PA covering 1.9-3.1 GHz based on the proposed method, show a good agreement with the theory. Measured results show that the fabricated PA has a drain efficiency of 66.5%-75% when delivering 41-42.3 dBm output power with a gain of 11-12.7 dB. Under a 20-MHz LTE signal excitation at 2.6 GHz, the PA exhibits an adjacent channel leakage ratio of -36.5 dBc at an average output power of 35 dBm without linearization.