Sub-1 V GPS band CMOS voltage-controlled oscillator with 29% tuning range.

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Title: Sub-1 V GPS band CMOS voltage-controlled oscillator with 29% tuning range.
Authors: Wang-Chi Cheng1, Cheong-Fat Chan1
Source: Analog Integrated Circuits & Signal Processing. Jun2007, Vol. 51 Issue 3, p141-144. 4p.
Subjects: Semiconductors, Complementary metal oxide semiconductors, Digital electronics, Logic circuits, Signal processing, Signal detection, Varactors
Abstract: A sub-1 V 1.6 GHz voltage-controlled oscillator (VCO) was designed and fabricated using 0.35 μm CMOS technology. This LC-based VCO can operate at a supply voltage as low as 0.8 V. A top-biased PMOS, with capacitor connected in parallel, is used in order to reduce the noise contribution in the oscillated frequency even at low voltage supply. Moreover, an accumulation MOS varactor is adopted to provide 29% wider tuning frequency range compared with a diode varactor under same full tuning voltage. With a 0.8 V supply, this 1.6 GHz top-biased A-MOS VCO consumes 9 mW, included output buffer, with a measured phase noise of −109.3 dBc/Hz @ 600 kHz offset. [ABSTRACT FROM AUTHOR]
Copyright of Analog Integrated Circuits & Signal Processing is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="AR" term="%22Wang-Chi+Cheng%22">Wang-Chi Cheng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cheong-Fat+Chan%22">Cheong-Fat Chan</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Analog+Integrated+Circuits+%26+Signal+Processing%22">Analog Integrated Circuits & Signal Processing</searchLink>. Jun2007, Vol. 51 Issue 3, p141-144. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Semiconductors%22">Semiconductors</searchLink><br /><searchLink fieldCode="DE" term="%22Complementary+metal+oxide+semiconductors%22">Complementary metal oxide semiconductors</searchLink><br /><searchLink fieldCode="DE" term="%22Digital+electronics%22">Digital electronics</searchLink><br /><searchLink fieldCode="DE" term="%22Logic+circuits%22">Logic circuits</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+processing%22">Signal processing</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+detection%22">Signal detection</searchLink><br /><searchLink fieldCode="DE" term="%22Varactors%22">Varactors</searchLink>
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  Data: A sub-1 V 1.6 GHz voltage-controlled oscillator (VCO) was designed and fabricated using 0.35 μm CMOS technology. This LC-based VCO can operate at a supply voltage as low as 0.8 V. A top-biased PMOS, with capacitor connected in parallel, is used in order to reduce the noise contribution in the oscillated frequency even at low voltage supply. Moreover, an accumulation MOS varactor is adopted to provide 29% wider tuning frequency range compared with a diode varactor under same full tuning voltage. With a 0.8 V supply, this 1.6 GHz top-biased A-MOS VCO consumes 9 mW, included output buffer, with a measured phase noise of −109.3 dBc/Hz @ 600 kHz offset. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Analog Integrated Circuits & Signal Processing is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10470-007-9055-7
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      – Code: eng
        Text: English
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        PageCount: 4
        StartPage: 141
    Subjects:
      – SubjectFull: Semiconductors
        Type: general
      – SubjectFull: Complementary metal oxide semiconductors
        Type: general
      – SubjectFull: Digital electronics
        Type: general
      – SubjectFull: Logic circuits
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      – SubjectFull: Signal processing
        Type: general
      – SubjectFull: Signal detection
        Type: general
      – SubjectFull: Varactors
        Type: general
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      – TitleFull: Sub-1 V GPS band CMOS voltage-controlled oscillator with 29% tuning range.
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              Text: Jun2007
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              Y: 2007
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