{"title":"用于光收发器的0.18µm 10ghz CMOS环形振荡器","authors":"H. Liu, W. Goh, L. Siek","doi":"10.1109/ISCAS.2005.1464890","DOIUrl":null,"url":null,"abstract":"This paper presents a three-stage 1.8-V 10-GHz ring oscillator, implemented using the 0.18-/spl mu/m digital CMOS technology. The circuit utilizes the feedforward technique at the delay cells and positive feedback provided by a cross-coupled nMOS pair in each delay cell to boost the operation speed of the oscillator. The output frequency ranges from 10.1 to 8.4 GHz with control voltages of 0 to 1.5 V. The simulated result of the phase noise is -99.9 dBc/Hz at 1-MHz offset from the center frequency of 9.2 GHz. The circuit draws 35 mA and 22 mA from the 1.8-V supply when running at the highest and lowest frequencies, respectively.","PeriodicalId":91083,"journal":{"name":"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems","volume":"22 1","pages":"1525-1528"},"PeriodicalIF":0.0000,"publicationDate":"2005-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"24","resultStr":"{\"title\":\"A 0.18-µm 10-GHz CMOS ring oscillator for optical transceivers\",\"authors\":\"H. Liu, W. Goh, L. Siek\",\"doi\":\"10.1109/ISCAS.2005.1464890\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper presents a three-stage 1.8-V 10-GHz ring oscillator, implemented using the 0.18-/spl mu/m digital CMOS technology. The circuit utilizes the feedforward technique at the delay cells and positive feedback provided by a cross-coupled nMOS pair in each delay cell to boost the operation speed of the oscillator. The output frequency ranges from 10.1 to 8.4 GHz with control voltages of 0 to 1.5 V. The simulated result of the phase noise is -99.9 dBc/Hz at 1-MHz offset from the center frequency of 9.2 GHz. The circuit draws 35 mA and 22 mA from the 1.8-V supply when running at the highest and lowest frequencies, respectively.\",\"PeriodicalId\":91083,\"journal\":{\"name\":\"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems\",\"volume\":\"22 1\",\"pages\":\"1525-1528\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2005-05-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"24\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISCAS.2005.1464890\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISCAS.2005.1464890","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A 0.18-µm 10-GHz CMOS ring oscillator for optical transceivers
This paper presents a three-stage 1.8-V 10-GHz ring oscillator, implemented using the 0.18-/spl mu/m digital CMOS technology. The circuit utilizes the feedforward technique at the delay cells and positive feedback provided by a cross-coupled nMOS pair in each delay cell to boost the operation speed of the oscillator. The output frequency ranges from 10.1 to 8.4 GHz with control voltages of 0 to 1.5 V. The simulated result of the phase noise is -99.9 dBc/Hz at 1-MHz offset from the center frequency of 9.2 GHz. The circuit draws 35 mA and 22 mA from the 1.8-V supply when running at the highest and lowest frequencies, respectively.
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