{"title":"用于移动数字电视应用的带宽带小增益波动压控振荡器的分数n频率合成器","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":"{\"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}","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}
A fractional-N frequency synthesizer with a wide-band small gain-Fluctuation VCO for mobile DTV applications
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.
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