JPS56110306A - Voltage control type oscillator for pll frequency synthesizer - Google Patents

Voltage control type oscillator for pll frequency synthesizer

Info

Publication number
JPS56110306A
JPS56110306A JP1312880A JP1312880A JPS56110306A JP S56110306 A JPS56110306 A JP S56110306A JP 1312880 A JP1312880 A JP 1312880A JP 1312880 A JP1312880 A JP 1312880A JP S56110306 A JPS56110306 A JP S56110306A
Authority
JP
Japan
Prior art keywords
voltage
diode
voltage control
frequency synthesizer
control type
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
JP1312880A
Other languages
Japanese (ja)
Inventor
Shigeru Kimura
Michiharu Tanida
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.)
Nippon Telegraph and Telephone Corp
Panasonic Mobile Communications Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Matsushita Communication Industrial 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 Nippon Telegraph and Telephone Corp, Matsushita Communication Industrial Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1312880A priority Critical patent/JPS56110306A/en
Publication of JPS56110306A publication Critical patent/JPS56110306A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes

Abstract

PURPOSE:To compensate the variance of a capacitance element, by connecting a voltage variable capacity diode in parallel or series to the capacitance element for decision of oscillation frequency and then applying the DC voltage outside of an oscillator to the diode. CONSTITUTION:The external control voltage to be applied to the terminal 27 is set at the reference voltage, and the voltage setting variable resistor 24 is operated to decide the frequency control voltage which is applied to the voltage variable capacity diode 23. The output oscillation frequency is controlled only by the external control voltage. In such way, the variance is compensated for the oscillation frequency deciding capacitance elements 8-13 plus the inductance element 14 by adding the diode 23 for control of frequency.
JP1312880A 1980-02-05 1980-02-05 Voltage control type oscillator for pll frequency synthesizer Pending JPS56110306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1312880A JPS56110306A (en) 1980-02-05 1980-02-05 Voltage control type oscillator for pll frequency synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1312880A JPS56110306A (en) 1980-02-05 1980-02-05 Voltage control type oscillator for pll frequency synthesizer

Publications (1)

Publication Number Publication Date
JPS56110306A true JPS56110306A (en) 1981-09-01

Family

ID=11824512

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1312880A Pending JPS56110306A (en) 1980-02-05 1980-02-05 Voltage control type oscillator for pll frequency synthesizer

Country Status (1)

Country Link
JP (1) JPS56110306A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5969513U (en) * 1982-10-30 1984-05-11 沖電気工業株式会社 voltage controlled oscillator
JPS59187243U (en) * 1983-05-30 1984-12-12 日本電気株式会社 phase synchronized circuit
JPS6159652A (en) * 1984-08-29 1986-03-27 Sony Corp Pll circuit
JPH0936736A (en) * 1996-06-17 1997-02-07 Seiko Epson Corp Voltage controller oscillator circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5969513U (en) * 1982-10-30 1984-05-11 沖電気工業株式会社 voltage controlled oscillator
JPS59187243U (en) * 1983-05-30 1984-12-12 日本電気株式会社 phase synchronized circuit
JPH0314825Y2 (en) * 1983-05-30 1991-04-02
JPS6159652A (en) * 1984-08-29 1986-03-27 Sony Corp Pll circuit
JPH0716161B2 (en) * 1984-08-29 1995-02-22 ソニー株式会社 PLL circuit
JPH0936736A (en) * 1996-06-17 1997-02-07 Seiko Epson Corp Voltage controller oscillator circuit

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