JPS56137738A - Phase-synchronizing circuit - Google Patents

Phase-synchronizing circuit

Info

Publication number
JPS56137738A
JPS56137738A JP4015080A JP4015080A JPS56137738A JP S56137738 A JPS56137738 A JP S56137738A JP 4015080 A JP4015080 A JP 4015080A JP 4015080 A JP4015080 A JP 4015080A JP S56137738 A JPS56137738 A JP S56137738A
Authority
JP
Japan
Prior art keywords
frequency
voltage
reference signal
output
phase
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.)
Pending
Application number
JP4015080A
Other languages
Japanese (ja)
Inventor
Yoshimitsu Ishiro
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP4015080A priority Critical patent/JPS56137738A/en
Publication of JPS56137738A publication Critical patent/JPS56137738A/en
Pending 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
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/101—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop
    • H03L7/102—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop the additional signal being directly applied to the controlled loop oscillator
    • 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
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To improve C/N ratio by a simple circuit and to eliminate the delay of pull-in time by inputting to a frequency contrl oscillator the DC component of the voltage that corresponds to the phase difference between both output signals from a reference signal generator and a frequency converter and by compensating a rough tuning frequency by comparing the integral value of the said voltage with upper and lower limit values of frequencies which can be phase-synchronized. CONSTITUTION:The output of frequency control oscillator 1 is frequency-divided by frequency converter 5, whose output is compared with the output signal of reference signal generator 4 by frequency phase comparator 3; and loop filter 2 extracts the DC component of the voltage signal that corresponds to the phase difference from the reference signal and then applies the component to frequency control oscillator 1 to control the oscillation frequency. On the other hand, the said reference signal and the frequency-division output are inputted to the 2nd frequency phase comparator 17 and the integral value of the voltage that corresponds to the phase difference is inputted from integrator 7 to frequency-synchronizing circuit 8, which compares is with preset upper and lower limit values and, when it is greater or less than the upper or lower limit value, compensates the rough tuning frequency of frequency control oscillator 1.
JP4015080A 1980-03-31 1980-03-31 Phase-synchronizing circuit Pending JPS56137738A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4015080A JPS56137738A (en) 1980-03-31 1980-03-31 Phase-synchronizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4015080A JPS56137738A (en) 1980-03-31 1980-03-31 Phase-synchronizing circuit

Publications (1)

Publication Number Publication Date
JPS56137738A true JPS56137738A (en) 1981-10-27

Family

ID=12572731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4015080A Pending JPS56137738A (en) 1980-03-31 1980-03-31 Phase-synchronizing circuit

Country Status (1)

Country Link
JP (1) JPS56137738A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989038A (en) * 1982-11-12 1984-05-23 Victor Co Of Japan Ltd Phase locked loop circuit
JPS6198021A (en) * 1984-10-16 1986-05-16 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Synchronous circuit
JPH03222519A (en) * 1990-01-29 1991-10-01 Anritsu Corp Phase locked loop oscillator
JPH04183117A (en) * 1990-11-19 1992-06-30 Matsushita Electric Ind Co Ltd Clock regenerating circuit
US5982724A (en) * 1996-07-02 1999-11-09 Kabushiki Kaisha Toshiba Disk reproducing apparatus having active wide-range PLL device
US6188252B1 (en) 1995-09-28 2001-02-13 Kabushiki Kaisha Toshiba Horizontal oscillation circuit capable of changing frequency
US6587411B2 (en) 1996-01-16 2003-07-01 Kabushiki Kaisha Toshiba Signal processing circuit having a voltage controlled oscillator capable of continuously changing the center frequency in accordance with a control voltage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989038A (en) * 1982-11-12 1984-05-23 Victor Co Of Japan Ltd Phase locked loop circuit
JPS6198021A (en) * 1984-10-16 1986-05-16 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Synchronous circuit
JPH03222519A (en) * 1990-01-29 1991-10-01 Anritsu Corp Phase locked loop oscillator
JPH04183117A (en) * 1990-11-19 1992-06-30 Matsushita Electric Ind Co Ltd Clock regenerating circuit
US6188252B1 (en) 1995-09-28 2001-02-13 Kabushiki Kaisha Toshiba Horizontal oscillation circuit capable of changing frequency
US6587411B2 (en) 1996-01-16 2003-07-01 Kabushiki Kaisha Toshiba Signal processing circuit having a voltage controlled oscillator capable of continuously changing the center frequency in accordance with a control voltage
US5982724A (en) * 1996-07-02 1999-11-09 Kabushiki Kaisha Toshiba Disk reproducing apparatus having active wide-range PLL device
US6285640B1 (en) 1996-07-02 2001-09-04 Kabushiki Kaisha Toshiba Disk reproducing apparatus having active wide-range PLL device
US6496470B2 (en) 1996-07-02 2002-12-17 Kabushiki Kaisha Toshiba Disk reproducing apparatus having active wide-range PLL device

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