{"title":"A fractional-N frequency synthesizer with a wide-band small gain-Fluctuation VCO for mobile DTV applications","authors":"T. Ahn, Je-cheol Moon, Yong Moon","doi":"10.1109/ICASIC.2007.4415627","DOIUrl":null,"url":null,"abstract":"A fully integrated Sigma-Delta fractional-N frequency synthesizer featuring wide-band and small VCO-gain (KVCO) fluctuation is presented. To cover wide-band frequency operation for mobile DTV applications, 6-bit switched-capacitor bank LC VCO is used, and for small KVCO fluctuation, four self-controlled varactor blocks are added to conventional capacitor bank scheme. The integrated VCO tuning range is as wide as 890 MHz (65%) from 910 MHz to 1.8 GHz, which can cover all the desired frequencies for the DVB-H/ISDB-T/T-DMB receiver and achieves 52% smaller KVCO fluctuation than that of a conventional design.","PeriodicalId":120984,"journal":{"name":"2007 7th International Conference on ASIC","volume":"321 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 7th International Conference on ASIC","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICASIC.2007.4415627","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
A fully integrated Sigma-Delta fractional-N frequency synthesizer featuring wide-band and small VCO-gain (KVCO) fluctuation is presented. To cover wide-band frequency operation for mobile DTV applications, 6-bit switched-capacitor bank LC VCO is used, and for small KVCO fluctuation, four self-controlled varactor blocks are added to conventional capacitor bank scheme. The integrated VCO tuning range is as wide as 890 MHz (65%) from 910 MHz to 1.8 GHz, which can cover all the desired frequencies for the DVB-H/ISDB-T/T-DMB receiver and achieves 52% smaller KVCO fluctuation than that of a conventional design.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
