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Frequency Synthesis for Integrated Transceivers

  • Jan-Wim Eikenbroek
  • Sven Mattisson

Abstract

With the recent increase in radio transceiver integration levels it has become feasible to use more complex frequency synthesizer structures. The use of a fractional-N synthesizer decouples the channel spacing from the choice of synthesizer reference frequency which enables much faster frequency hopping. Static moduli synthesizers have required complex spurious compensation methods, but recently, ΔΣ-dithered moduli fractional-N synthesizers have attracted a lot of attention as no analog spurious-compensation circuits are needed. Design equations for the analog parts of a ΔΣ-based synthesizer are presented together with a discussion on practical implementation aspects.

Keywords

Phase Detector Reference Frequency Loop Filter Channel Spacing Frequency Synthesizer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • Jan-Wim Eikenbroek
    • 1
  • Sven Mattisson
    • 2
  1. 1.Ericsson Radio Systems B.V.EmmenThe Netherlands
  2. 2.Ericsson Mobile Communications ABLundSweden

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