{"title":"用于ka波段卫星通信的功率放大器GaN MMIC线性度的改进","authors":"A. Darwish, J. Qiu, E. Viveiros, H. A. Hung","doi":"10.1109/MWSYM.2012.6259625","DOIUrl":null,"url":null,"abstract":"The linearity performance of a Ka-band power amplifier (PA) GaN MMIC with a novel balanced 4-way combiner is presented. The 32 – 38 GHz two-stage PA produces a maximum power of 6 watts for class-A bias. Improved linearity is demonstrated by biasing the first and second stages in deep class AB, and class A, respectively. This improvement in overall linearity is achieved as the gain expansion of the first stage is balanced by the gain compression of the second stage. Measured linearity performance is presented.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":"{\"title\":\"Improved linearity of power amplifier GaN MMIC for Ka-band SATCOM\",\"authors\":\"A. Darwish, J. Qiu, E. Viveiros, H. A. Hung\",\"doi\":\"10.1109/MWSYM.2012.6259625\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The linearity performance of a Ka-band power amplifier (PA) GaN MMIC with a novel balanced 4-way combiner is presented. The 32 – 38 GHz two-stage PA produces a maximum power of 6 watts for class-A bias. Improved linearity is demonstrated by biasing the first and second stages in deep class AB, and class A, respectively. This improvement in overall linearity is achieved as the gain expansion of the first stage is balanced by the gain compression of the second stage. Measured linearity performance is presented.\",\"PeriodicalId\":6385,\"journal\":{\"name\":\"2012 IEEE/MTT-S International Microwave Symposium Digest\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-06-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2012 IEEE/MTT-S International Microwave Symposium Digest\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MWSYM.2012.6259625\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 IEEE/MTT-S International Microwave Symposium Digest","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSYM.2012.6259625","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
摘要
介绍了一种新型平衡四路组合器的ka波段功率放大器(PA) GaN MMIC的线性性能。32 - 38 GHz两级PA产生的a类偏置最大功率为6瓦。通过分别对深AB级和A级的第一和第二级进行偏置，证明了线性度的提高。这种整体线性度的改善是通过第一级的增益扩展与第二级的增益压缩相平衡而实现的。给出了测量的线性性能。
Improved linearity of power amplifier GaN MMIC for Ka-band SATCOM
The linearity performance of a Ka-band power amplifier (PA) GaN MMIC with a novel balanced 4-way combiner is presented. The 32 – 38 GHz two-stage PA produces a maximum power of 6 watts for class-A bias. Improved linearity is demonstrated by biasing the first and second stages in deep class AB, and class A, respectively. This improvement in overall linearity is achieved as the gain expansion of the first stage is balanced by the gain compression of the second stage. Measured linearity performance is presented.
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