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    PHASE LOCKED LOOP WITH IMPROVED LOCK-IN
    2.
    发明授权
    PHASE LOCKED LOOP WITH IMPROVED LOCK-IN 失效

    公开(公告)号：KR860001437B1

    公开(公告)日：1986-09-24

    申请号：KR820000896

    申请日：1982-03-04

    Applicant: MOTOROLA INC

    Inventor： HILBERT FRANCIS HARLOW

    IPC: H03D1/22 ,  H03D3/00 ,  H03L7/08 ,  H03L7/085 ,  H03L7/087 ,  H03L7/10 ,  H04H1/00 ,  H04H20/49

    Abstract: PLL with fast lock-in pull-in range uses a logic circuit to detect beats between outputs of an in-phase detector and phase quadrature detector. It determines whethr an incoming frequency is within the normal 'lock-in' range of a PLL VCO or not, and whether it is higher or lower than the VCO frequency. If not within normal range, the beats are rectified and gated to provide a DC control voltage of the proper value and polarity for locking the oscillator on the incoming frequency.

    PHASE LOCKED LOOP WITH IMPROVED LOCK-IN
    6.
    发明专利
    PHASE LOCKED LOOP WITH IMPROVED LOCK-IN 未知

    公开(公告)号：DE3271409D1

    公开(公告)日：1986-07-10

    申请号：DE3271409

    申请日：1982-01-18

    Applicant: MOTOROLA INC

    Inventor： HILBERT FRANCIS HARLOW

    IPC: H03D1/22 ,  H03D3/00 ,  H03L7/08 ,  H03L7/085 ,  H03L7/087 ,  H03L7/10 ,  H04H1/00 ,  H04H20/49 ,  H03D3/18 ,  H04B1/16

    Abstract: The circuit determines whether an incoming frequency is within the normal "lock-in" range of a phase locked loop VCO or not, and whether it is higher or lower than the VCO frequency. If not within normal range, the beats are rectified and gated to provide a DC control voltage of the proper value and polarity for locking the oscillator on the incoming frequency. Rectification may be half or full wave as needed, and the circuit may include filter bandwidth control as well. This circuit is suitable for signals of any waveform, quadrature signals, and AM stereophonic signals.

    PHASE LOCKED LOOP WITH IMPROVED LOCK-IN
    9.
    发明申请
    PHASE LOCKED LOOP WITH IMPROVED LOCK-IN 审中-公开
    相位锁定环与改进的锁定

    公开(公告)号：WO1982003143A1

    公开(公告)日：1982-09-16

    申请号：PCT/US1982000051

    申请日：1982-01-18

    Applicant: MOTOROLA INC

    Inventor： MOTOROLA INC ,  HILBERT FRANCIS HARLOW

    IPC: H03D03/18

    CPC classification number: H04H20/49 ,  H03L7/087 ,  H03L7/10

    Abstract: Le circuit determine si une frequence d'arrivee est comprise dans la gamme normale d'enclenchement'd'un oscillateur commande en tension (VCO) a boucle d'asservissement de phase (16), et si cette frequence est plus elevee ou plus basse que la frequence du VCO. Si la frequence n'est pas comprise dans la gamme normale, les battements sont redresses et envoyes a un circuit de porte (18) pour fournir une tension continue de commande ayant une valeur et une polarite correctes pour verrouiller l'oscillateur sur la frequence d'entree. Le redressement peut s'effectuer sur une demi-onde (18) ou sur une onde entiere en fonction des besoins, et le circuit peut comprendre aussi une commande (46) de la largeur de bande du filtre. Ce circuit convient a des signaux de toutes formes d'ondes, a des signaux de quadrature ainsi qu'a des signaux stereophoniques a modulation d'amplitude.

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