{"title":"Design of a broadband high efficiency GaN power amplifier for GNSS applications","authors":"Y. Zhuang, Jiafeng Zhou, Yi Huang, Anqi Chen","doi":"10.1109/IEEE-IWS.2016.7585464","DOIUrl":null,"url":null,"abstract":"This paper presents the design, implementation and experimental results of a broadband high efficiency GaN-HEMT power amplifier. The source-pull and load-pull simulations were employed to determine the optimum input and output impedance of a GaN transistor over 0.9-1.5 GHz in terms of maximum power added efficiency (PAE). A low-pass network based on a closed-form solution was applied for impedance matching and then it was transferred to a band-pass network. Norton Transformation was used to scale up impedances without sacrificing bandwidth or matching. For large signals, the amplifier can achieve a power gain of 9.5-13.5 dB across 0.9-1.5 GHz while the output power is 10-22W. The corresponding power added efficiency (PAE) is 60%-86%. This power amplifier is suitable for satellite communications systems and GNSS applications.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"73 13","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE MTT-S International Wireless Symposium (IWS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEEE-IWS.2016.7585464","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
This paper presents the design, implementation and experimental results of a broadband high efficiency GaN-HEMT power amplifier. The source-pull and load-pull simulations were employed to determine the optimum input and output impedance of a GaN transistor over 0.9-1.5 GHz in terms of maximum power added efficiency (PAE). A low-pass network based on a closed-form solution was applied for impedance matching and then it was transferred to a band-pass network. Norton Transformation was used to scale up impedances without sacrificing bandwidth or matching. For large signals, the amplifier can achieve a power gain of 9.5-13.5 dB across 0.9-1.5 GHz while the output power is 10-22W. The corresponding power added efficiency (PAE) is 60%-86%. This power amplifier is suitable for satellite communications systems and GNSS applications.
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