{"title":"A 90nm CMOS Doherty Power Amplifier with Integrated Hybrid Coupler and Impedance Transformer","authors":"M. Elmala, R. Bishop","doi":"10.1109/RFIC.2007.380915","DOIUrl":null,"url":null,"abstract":"An OFDM capable Doherty PA is implemented in 90 nm CMOS with integrated quadrature hybrid and impedance transformer. The two amplifiers are optimized to minimize AM-PM distortion. The PA achieves 25 dBm Psa, using 1.4 V supply with 24% PAE, and operates over 1 GHz of frequency range (from 4 GHz to 5 GHz). 3 dB to 6 dB back-off from P1dB is required to achieve -25 dB measured EVM across this band, making it suitable for WLAN and WiMAX applications. The measured AM-PM distortion varies from 4deg to 12.5deg across the 1 GHz range.","PeriodicalId":356468,"journal":{"name":"2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium","volume":"38 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"15","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RFIC.2007.380915","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 15
Abstract
An OFDM capable Doherty PA is implemented in 90 nm CMOS with integrated quadrature hybrid and impedance transformer. The two amplifiers are optimized to minimize AM-PM distortion. The PA achieves 25 dBm Psa, using 1.4 V supply with 24% PAE, and operates over 1 GHz of frequency range (from 4 GHz to 5 GHz). 3 dB to 6 dB back-off from P1dB is required to achieve -25 dB measured EVM across this band, making it suitable for WLAN and WiMAX applications. The measured AM-PM distortion varies from 4deg to 12.5deg across the 1 GHz range.
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