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Design of Integrated LC VCOs

  • Chapter
Trade-Offs in Analog Circuit Design

Conclusion

A general and insightful optimization technique to design integrated LC VCOs utilizing GNP was reviewed. A method for selecting the optimum inductor to minimize phase noise was emphasized. A 2.4 GHz fully integrated LC VCO was designed using our optimization technique and implemented as a design example. A tuning range of 26% was achieved with the inversion mode MOSCAP tuning. The measured phase noise was -121, -117 and -115 dBc/Hz at 600 kHz offset from 1.91, 2.03 and 2.60 GHz carriers, respectively. The designed VCO dissipates only 4 mA from a 2.5 V supply voltage. Comparison with other oscillators using two figures of merit, PFN and PFTN, supports the adequacy of our design methodology.

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Authors and Affiliations

  1. California Institute of Technology, California, USA

    Donhee Ham

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  1. Donhee Ham
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Editors and Affiliations

  1. Imperial College, UK

    Chris Toumazou

  2. ETH-Zentrum, Switzerland

    George Moschytz

  3. Analog Devices, USA

    Barrie Gilbert

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© 2002 Kluwer Academic Publishers

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Ham, D. (2002). Design of Integrated LC VCOs. In: Toumazou, C., Moschytz, G., Gilbert, B., Kathiresan, G. (eds) Trade-Offs in Analog Circuit Design. Springer, Boston, MA. https://doi.org/10.1007/0-306-47673-8_18

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  • DOI: https://doi.org/10.1007/0-306-47673-8_18

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4020-7037-2

  • Online ISBN: 978-0-306-47673-0

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