{"title":"电流模D类放大器线性化的低频抖动技术","authors":"F. A. Malekzadeh, A. V. van Roermund, R. Mahmoudi","doi":"10.1109/MWSYM.2012.6259422","DOIUrl":null,"url":null,"abstract":"Combination of a band-pass signal with a low frequency sinusoid signal, also known as dithering, will linearize the performance and reduce the reactive power loss of class D amplifiers. The expectations are verified through realization and measurement of a 2 watt current mode LDMOS class D amplifier operating at 2.014 GHz. The drain efficiency is enhanced from 55 to 59 percent, while giving ACPR levels below −33dBc for first WCDMA adjacent channel.","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":"3","resultStr":"{\"title\":\"Low frequency dithering technique for linearization of current mode class D amplifiers\",\"authors\":\"F. A. Malekzadeh, A. V. van Roermund, R. Mahmoudi\",\"doi\":\"10.1109/MWSYM.2012.6259422\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Combination of a band-pass signal with a low frequency sinusoid signal, also known as dithering, will linearize the performance and reduce the reactive power loss of class D amplifiers. The expectations are verified through realization and measurement of a 2 watt current mode LDMOS class D amplifier operating at 2.014 GHz. The drain efficiency is enhanced from 55 to 59 percent, while giving ACPR levels below −33dBc for first WCDMA adjacent channel.\",\"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\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2012 IEEE/MTT-S International Microwave Symposium Digest\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MWSYM.2012.6259422\",\"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.2012.6259422","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Low frequency dithering technique for linearization of current mode class D amplifiers
Combination of a band-pass signal with a low frequency sinusoid signal, also known as dithering, will linearize the performance and reduce the reactive power loss of class D amplifiers. The expectations are verified through realization and measurement of a 2 watt current mode LDMOS class D amplifier operating at 2.014 GHz. The drain efficiency is enhanced from 55 to 59 percent, while giving ACPR levels below −33dBc for first WCDMA adjacent channel.
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