{"title":"The Switched-Capacitor Power Amplifier: A Key Enabler for Future Communications Systems","authors":"J. Walling","doi":"10.1109/ESSCIRC.2019.8902890","DOIUrl":null,"url":null,"abstract":"In this paper, power amplifiers in CMOS technologies are reviewed including traditional PAs and the digital power amplifier (DPA). DPAs embed the functionality of an up-conversion mixer and digital-to-analog converter (DAC) in the PA. Hence a more appropriate label for DPAs is RF-Power-DACs. The \"Switched-Capacitor Power Amplifier\" (SCPA) is highlighted due to its potential to transform future communications networks because of its small-size, high linearity, and high efficiency. Because the SCPA (and other DPAs) can directly interface with digital signals while outputting RF signals, it is a flexible mixed-signal interface circuit that does not require a large baseband filter. Several recent innovations in the SCPA that enable it to be reconfigured digitally across multiple frequency bands and to be used in beamforming/MIMO transceivers are highlighted.","PeriodicalId":402948,"journal":{"name":"ESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference (ESSCIRC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference (ESSCIRC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ESSCIRC.2019.8902890","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
In this paper, power amplifiers in CMOS technologies are reviewed including traditional PAs and the digital power amplifier (DPA). DPAs embed the functionality of an up-conversion mixer and digital-to-analog converter (DAC) in the PA. Hence a more appropriate label for DPAs is RF-Power-DACs. The "Switched-Capacitor Power Amplifier" (SCPA) is highlighted due to its potential to transform future communications networks because of its small-size, high linearity, and high efficiency. Because the SCPA (and other DPAs) can directly interface with digital signals while outputting RF signals, it is a flexible mixed-signal interface circuit that does not require a large baseband filter. Several recent innovations in the SCPA that enable it to be reconfigured digitally across multiple frequency bands and to be used in beamforming/MIMO transceivers are highlighted.
本文综述了CMOS技术中的功率放大器，包括传统功率放大器和数字功率放大器。dpa在PA中嵌入了上转换混频器和数模转换器(DAC)的功能。因此，dpa更合适的标签是rf - power - dac。“开关电容功率放大器”(SCPA)因其体积小，线性度高，效率高，具有改变未来通信网络的潜力而备受关注。由于SCPA(和其他dpa)可以在输出RF信号的同时直接与数字信号接口，因此它是一种灵活的混合信号接口电路，不需要大型基带滤波器。SCPA最近的几项创新使其能够跨多个频带进行数字重新配置，并用于波束成形/MIMO收发器。
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