In a new formulation for digital phase-locked loops, loop-filter constants are determined from loop roots that can each be selectively placed in the s-plane on the basis of a new set of parameters, each with single and direct physical meaning in terms of loop noise band, width root-specific decay rate, or root-specific damping. Loops of first to fourth order are treated in the continuous-update approximation (B/sub L/T/spl rarr/0) and in a discrete-update formulation with arbitrary B/sub L/T. Deficiencies of the continuous-update approximation in large-B/sub L/T applications are avoided in the new discrete-update formulation. A new method for direct, transient-free acquisition with third- and fourth-order loops can improve the versatility and reliability of acquisition with such loops.<>


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    Titel :

    Controlled-root formulation for digital phase-locked loops


    Beteiligte:
    Stephens, S.A. (Autor:in) / Thomas, J.B. (Autor:in)


    Erscheinungsdatum :

    01.01.1995


    Format / Umfang :

    9246712 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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