{"title":"Novel DC-Biasing Circuits With Arbitrary Harmonic-Control Capability for Compact High-Efficiency Power Amplifiers","authors":"Shinichi Tanaxa, T. Oda, Kento Saiki","doi":"10.23919/EUMC.2018.8541694","DOIUrl":null,"url":null,"abstract":"The next generation mobile communication systems impose challenging performance, size and cost requirements on the power amplifiers. This paper presents novel DC-biasing circuits, which are compact and yet can control the harmonics almost arbitrarily, thereby allowing to save the space for additional harmonic tuning circuit. The proposed circuit consists of a composite right-/left-handed (CRLH) transmission line (TL) stub, of which the size and harmonic-control function can be tuned by modifying the dispersion diagram of the stub line. As a proof of concept, a compact 2-GHz 5-W GaN HEMT class-F PA using the versatile CRLH-TL stubs was fabricated, demonstrating 85% drain efficiency and 76% Dower-added efficiency.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"8 1","pages":"13-16"},"PeriodicalIF":0.0000,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 48th European Microwave Conference (EuMC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/EUMC.2018.8541694","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
The next generation mobile communication systems impose challenging performance, size and cost requirements on the power amplifiers. This paper presents novel DC-biasing circuits, which are compact and yet can control the harmonics almost arbitrarily, thereby allowing to save the space for additional harmonic tuning circuit. The proposed circuit consists of a composite right-/left-handed (CRLH) transmission line (TL) stub, of which the size and harmonic-control function can be tuned by modifying the dispersion diagram of the stub line. As a proof of concept, a compact 2-GHz 5-W GaN HEMT class-F PA using the versatile CRLH-TL stubs was fabricated, demonstrating 85% drain efficiency and 76% Dower-added efficiency.
下一代移动通信系统对功率放大器提出了具有挑战性的性能、尺寸和成本要求。本文提出了一种新颖的直流偏置电路，该电路结构紧凑，几乎可以任意控制谐波，从而节省了额外谐波调谐电路的空间。该电路由一根复合的左/右传输线(CRLH)短线组成，通过修改短线的色散图可以调节短线的大小和谐波控制功能。作为概念验证，使用多功能CRLH-TL stub制造了紧凑型2 ghz 5 w GaN HEMT类f级PA，其漏极效率为85%，功耗增加效率为76%。
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