JPS558128A - Phase synchronous control circuit - Google Patents

Phase synchronous control circuit

Info

Publication number
JPS558128A
JPS558128A JP8034778A JP8034778A JPS558128A JP S558128 A JPS558128 A JP S558128A JP 8034778 A JP8034778 A JP 8034778A JP 8034778 A JP8034778 A JP 8034778A JP S558128 A JPS558128 A JP S558128A
Authority
JP
Japan
Prior art keywords
voltage
phase synchronous
filter
error
control circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8034778A
Other languages
Japanese (ja)
Other versions
JPS6013613B2 (en
Inventor
Yoshinori Uchida
Kenichi Nishiguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP53080347A priority Critical patent/JPS6013613B2/en
Publication of JPS558128A publication Critical patent/JPS558128A/en
Publication of JPS6013613B2 publication Critical patent/JPS6013613B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To secure the phase synchronous matching by piling the correction voltage obtained from the DC component smoothed based on the error voltage given from the imperfect integrating loop filter onto the error voltage to add the voltage to the voltage control oscillator and then correcting the error caused by the filter. CONSTITUTION:In the analog-type phase synchronous circuit, the DC component smoothed based on the error voltage given from imperfect integrating loop filter 3 is sampled 9. This sample value undergoes A/D conversion 10 plus a process given through digital control circuit 11 and then D/A conversion 12. Then the correction voltage containing the fixed slope part of the error voltage is piled onto the output of filter 3 to be then applied to voltage control oscillator 4. Thus, the steady phase error caused by filter 3 is correctd to secure the phase synchronous matching.
JP53080347A 1978-06-30 1978-06-30 Phase synchronization control circuit Expired JPS6013613B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53080347A JPS6013613B2 (en) 1978-06-30 1978-06-30 Phase synchronization control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53080347A JPS6013613B2 (en) 1978-06-30 1978-06-30 Phase synchronization control circuit

Publications (2)

Publication Number Publication Date
JPS558128A true JPS558128A (en) 1980-01-21
JPS6013613B2 JPS6013613B2 (en) 1985-04-08

Family

ID=13715714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53080347A Expired JPS6013613B2 (en) 1978-06-30 1978-06-30 Phase synchronization control circuit

Country Status (1)

Country Link
JP (1) JPS6013613B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144928U (en) * 1982-03-25 1983-09-29 ソニー株式会社 phase lock droop
JPS59127427A (en) * 1983-01-11 1984-07-23 Nippon Kogaku Kk <Nikon> Pll frequency synthesizer
JPH01209816A (en) * 1988-02-17 1989-08-23 Nec Corp Frequency phase locked loop circuit
JPH06204863A (en) * 1993-01-06 1994-07-22 Sony Corp Pll circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144928U (en) * 1982-03-25 1983-09-29 ソニー株式会社 phase lock droop
JPH0227636Y2 (en) * 1982-03-25 1990-07-25
JPS59127427A (en) * 1983-01-11 1984-07-23 Nippon Kogaku Kk <Nikon> Pll frequency synthesizer
JPH01209816A (en) * 1988-02-17 1989-08-23 Nec Corp Frequency phase locked loop circuit
JPH06204863A (en) * 1993-01-06 1994-07-22 Sony Corp Pll circuit

Also Published As

Publication number Publication date
JPS6013613B2 (en) 1985-04-08

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