JPS5583345A - Phase control type oscillator - Google Patents

Phase control type oscillator

Info

Publication number
JPS5583345A
JPS5583345A JP16085078A JP16085078A JPS5583345A JP S5583345 A JPS5583345 A JP S5583345A JP 16085078 A JP16085078 A JP 16085078A JP 16085078 A JP16085078 A JP 16085078A JP S5583345 A JPS5583345 A JP S5583345A
Authority
JP
Japan
Prior art keywords
amplifier circuit
phase control
current system
direct
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
JP16085078A
Other languages
Japanese (ja)
Other versions
JPS6224970B2 (en
Inventor
Satoru Shinozaki
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 JP16085078A priority Critical patent/JPS5583345A/en
Publication of JPS5583345A publication Critical patent/JPS5583345A/en
Publication of JPS6224970B2 publication Critical patent/JPS6224970B2/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
    • 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
    • H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop

Landscapes

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

Abstract

PURPOSE:To make it possible to send a phase control alarm without placing a direct-current system amplifier circuit in a saturated state, by reducing the apparent gain of an alternating-current system amplifier circuit when the output voltage of the direct-current system amplifier circuit approximates to a saturation voltage. CONSTITUTION:When a phase control voltage approximates to the saturation voltage of direct-current system amplifier 6 through the deviation in self-oscillation frequency, etc., of voltage control amplifier circuit 2, attenuator circuit 9 operates to decrease apparently the gain of alternating-current system amplifier circuit 7. Therefore, when the deviation in frequency exceeds a phase control range, a beat outputted by phase comparator circuit 3 never generate a direct-current component enough to saturate amplifier circuit 6, and consequently amplifier circuit 6 is placed in an oscillation state by positive feedback circuit 8 to send a phase control alarm. Consequently, direct-current system amplifier circuit 6 can be prevented from being in a saturated state in all states where no phase control is exercised.
JP16085078A 1978-12-19 1978-12-19 Phase control type oscillator Granted JPS5583345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16085078A JPS5583345A (en) 1978-12-19 1978-12-19 Phase control type oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16085078A JPS5583345A (en) 1978-12-19 1978-12-19 Phase control type oscillator

Publications (2)

Publication Number Publication Date
JPS5583345A true JPS5583345A (en) 1980-06-23
JPS6224970B2 JPS6224970B2 (en) 1987-06-01

Family

ID=15723742

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16085078A Granted JPS5583345A (en) 1978-12-19 1978-12-19 Phase control type oscillator

Country Status (1)

Country Link
JP (1) JPS5583345A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135000A1 (en) * 1981-09-04 1983-05-26 Aeg Telefunken Nachrichten CONTROL AMPLIFIER FOR A PHASE CONTROL CIRCUIT
EP0414260A2 (en) * 1989-08-25 1991-02-27 Anritsu Corporation Frequency synthesizer for implementing generator of highly pure signals and circuit devices, such as VCO, PLL and SG, used therein
US5254955A (en) * 1989-08-25 1993-10-19 Anritsu Corporation Advanced phase locked loop circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135000A1 (en) * 1981-09-04 1983-05-26 Aeg Telefunken Nachrichten CONTROL AMPLIFIER FOR A PHASE CONTROL CIRCUIT
EP0414260A2 (en) * 1989-08-25 1991-02-27 Anritsu Corporation Frequency synthesizer for implementing generator of highly pure signals and circuit devices, such as VCO, PLL and SG, used therein
US5254955A (en) * 1989-08-25 1993-10-19 Anritsu Corporation Advanced phase locked loop circuit
EP0583804A1 (en) * 1989-08-25 1994-02-23 Anritsu Corporation A phase locked loop circuit

Also Published As

Publication number Publication date
JPS6224970B2 (en) 1987-06-01

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