{"title":"A 77.1-88.6 GHz Digitally Controlled Oscillator with High Frequency Resolution in 40nm CMOS","authors":"Kui Wang, Lu Tang","doi":"10.1109/ICICM50929.2020.9292181","DOIUrl":null,"url":null,"abstract":"This paper presents a millimeter-wave digitally controlled oscillator (DCO) using the digital controlled transmission lines (TLs) technology to achieve a wide frequency tuning range. To optimize frequency resolution of the fine tuning, a transformer is designed to attenuate the frequency fine tuning sensitivity of the C-2C switched capacitor (SC) ladder circuit. The simulated results show that the proposed DCO attains frequency tuning range from 77.1 to 88.6GHz. Its frequency resolution is around 200kHz. The phase noise is −94.4 dBc/Hz at 1-MHz frequency offset at 77.5GHz. The DCO is fabricated in 40nm CMOS process, and its core chip size is only 0.067mm2.","PeriodicalId":364285,"journal":{"name":"2020 IEEE 5th International Conference on Integrated Circuits and Microsystems (ICICM)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE 5th International Conference on Integrated Circuits and Microsystems (ICICM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICICM50929.2020.9292181","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a millimeter-wave digitally controlled oscillator (DCO) using the digital controlled transmission lines (TLs) technology to achieve a wide frequency tuning range. To optimize frequency resolution of the fine tuning, a transformer is designed to attenuate the frequency fine tuning sensitivity of the C-2C switched capacitor (SC) ladder circuit. The simulated results show that the proposed DCO attains frequency tuning range from 77.1 to 88.6GHz. Its frequency resolution is around 200kHz. The phase noise is −94.4 dBc/Hz at 1-MHz frequency offset at 77.5GHz. The DCO is fabricated in 40nm CMOS process, and its core chip size is only 0.067mm2.
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