JPS55133137A - Phase synchronous oscillation circuit - Google Patents

Phase synchronous oscillation circuit

Info

Publication number
JPS55133137A
JPS55133137A JP2587179A JP2587179A JPS55133137A JP S55133137 A JPS55133137 A JP S55133137A JP 2587179 A JP2587179 A JP 2587179A JP 2587179 A JP2587179 A JP 2587179A JP S55133137 A JPS55133137 A JP S55133137A
Authority
JP
Japan
Prior art keywords
phase
signal
error signal
output
comparator
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
JP2587179A
Other languages
Japanese (ja)
Other versions
JPS6316936B2 (en
Inventor
Shuji Murakami
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2587179A priority Critical patent/JPS55133137A/en
Publication of JPS55133137A publication Critical patent/JPS55133137A/en
Publication of JPS6316936B2 publication Critical patent/JPS6316936B2/ja
Granted 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 obtain the carrier having the phase in response to AM-PM conversion, in the phase synchronous oscillation circuit used for carrier reproducing unit for the signal subjected to AM-PM conversion. CONSTITUTION:Taking the phase of reference signal as phi1, the phase comparator 202 produces the error signal f1. The error signal f1 is held at the hold circuit 206 with the control signal C1. Next, if the phase of reference signal is phi2, the phase comparator 204 produces the error signal f2. The error signal f2 is held at the hold circuit 207 with the control signal C2. The output signal of the holding circuits 206, 207 is fed to VCO 201 via the adder 210 and low pass filter 211, and it is controlled that the frequency and phase of the phase reference signal can be equal. The output of the holding circuits 206, 207 is inputted to the error signal comparator 209, and the output of the result of comparison controls the phase shifter 203 so that the difference of error signal can be made smaller.
JP2587179A 1979-03-06 1979-03-06 Phase synchronous oscillation circuit Granted JPS55133137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2587179A JPS55133137A (en) 1979-03-06 1979-03-06 Phase synchronous oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2587179A JPS55133137A (en) 1979-03-06 1979-03-06 Phase synchronous oscillation circuit

Publications (2)

Publication Number Publication Date
JPS55133137A true JPS55133137A (en) 1980-10-16
JPS6316936B2 JPS6316936B2 (en) 1988-04-12

Family

ID=12177843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2587179A Granted JPS55133137A (en) 1979-03-06 1979-03-06 Phase synchronous oscillation circuit

Country Status (1)

Country Link
JP (1) JPS55133137A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108358A2 (en) * 1982-10-30 1984-05-16 Nec Corporation Phase demodulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108358A2 (en) * 1982-10-30 1984-05-16 Nec Corporation Phase demodulator

Also Published As

Publication number Publication date
JPS6316936B2 (en) 1988-04-12

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