Fast frequency acquisition phase-frequency detector with zero blind zone in PLL

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Fast frequency acquisition phase-frequency detector with zero blind zone in PLL

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A simple phase-frequency detector (PFD) is described. This circuit only has 16 transistors. This PFD has linear range when the phase difference is in [0, π], and saturates when the phase difference is in [π, 2π]. It completely eliminates the blind zone, speeds up the acquisition process and improves the maximum operating frequency of the PFD. Both simulation and post-simulation with HSPICE confirm these advantages.

Inspec keywords: phase locked loops; SPICE

Other keywords: phase-frequency detector; HSPICE; zero blind zone; fast frequency acquisition; phase locked loops

Subjects: Computer-aided circuit analysis and design; Modulators, demodulators, discriminators and mixers; Electronic engineering computing

References

    1. 1)
      • Lee, K.-S., Park, B.-H., Lee, H.-I., Yoh, M.J.: `Phase frequency detectors for fast frequency acquisition in zero-dead-zone CPPLLs for mobile communication system', Solid-State Circuit Conf., 2003, Estoril, Portugal, p. 525–528.
    2. 2)
      • M. Papamichail , D. Karadimas , K. Efstathiou , G. Papadopoulos . (2006) Linear range extension of a phase-frequency detector with saturated output.
    3. 3)
      • R.E. Best . (2003) Phase-locked loops design, simulation, and application.
    4. 4)
      • M. Mansuri , D. Liu , C.-K.K. Yang . Fast frequency acquisition phase-frequency detectors for G-samples/s phase-locked loop. IEEE J. Solid-State Circuits , 10 , 1031 - 1034
    5. 5)
      • M. Soyuer , R.G. Meyer . Frequency limitations of a conventional phase-frequency detector. IEEE J. State Solid Circuits , 4 , 1019 - 1022
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