JPS5479547A - Voltage control oscillator - Google Patents

Voltage control oscillator

Info

Publication number
JPS5479547A
JPS5479547A JP14754277A JP14754277A JPS5479547A JP S5479547 A JPS5479547 A JP S5479547A JP 14754277 A JP14754277 A JP 14754277A JP 14754277 A JP14754277 A JP 14754277A JP S5479547 A JPS5479547 A JP S5479547A
Authority
JP
Japan
Prior art keywords
resistances
equivalent
circuit
trs
varied
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
JP14754277A
Other languages
Japanese (ja)
Other versions
JPS6022845B2 (en
Inventor
Hidekazu Ishii
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 JP52147542A priority Critical patent/JPS6022845B2/en
Publication of JPS5479547A publication Critical patent/JPS5479547A/en
Publication of JPS6022845B2 publication Critical patent/JPS6022845B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1212—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
    • H03B5/1215—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair the current source or degeneration circuit being in common to both transistors of the pair, e.g. a cross-coupled long-tailed pair
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

PURPOSE:To obtain a circuit which can be easily made into an integrated circuit with excellent linearity and wide variation width by connecting a power supply to an emitter common connection point and by controlling its current value with an external control signal. CONSTITUTION:Emitters of transistors Tr1 and Tr2 are connected in common to variable current supply 12, whose output is varied with the input of control input terminal 10. The equivalent circuit of oscillator circuit (a) is shown in figure (b); terminals 13 and 16 are equivalent to collector terminals of Trs 1 and 2 respectively, base resistances of Trs 1 and 2 correspond to equivalent resistances 19 and 20, and input resistances are shown by equivalent resistances 21 and 22. Its oscillation frequency fOsc is expressed by equation [1] (L, C, q, T, and I denote the inductance of coil 5, the capacity of capacitor 6, electron charge, the absolute temperature, and the current value of current supply 12) and it is clear judging from equation [I] that the oscillation frequency can be varied by varying IO.
JP52147542A 1977-12-07 1977-12-07 voltage controlled oscillator Expired JPS6022845B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52147542A JPS6022845B2 (en) 1977-12-07 1977-12-07 voltage controlled oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52147542A JPS6022845B2 (en) 1977-12-07 1977-12-07 voltage controlled oscillator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP7796386A Division JPS61256803A (en) 1986-04-04 1986-04-04 Voltage controlled oscillator

Publications (2)

Publication Number Publication Date
JPS5479547A true JPS5479547A (en) 1979-06-25
JPS6022845B2 JPS6022845B2 (en) 1985-06-04

Family

ID=15432666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52147542A Expired JPS6022845B2 (en) 1977-12-07 1977-12-07 voltage controlled oscillator

Country Status (1)

Country Link
JP (1) JPS6022845B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56120203A (en) * 1980-01-30 1981-09-21 Siemens Ag Controllable oscillator in frequency by current change
JPS56152710U (en) * 1980-04-16 1981-11-16
WO1983000411A1 (en) * 1981-07-20 1983-02-03 Murakami, Yoshihiro Amplitude modulation circuit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56120203A (en) * 1980-01-30 1981-09-21 Siemens Ag Controllable oscillator in frequency by current change
JPS6339161B2 (en) * 1980-01-30 1988-08-03 Siemens Ag
JPS56152710U (en) * 1980-04-16 1981-11-16
JPS5921927Y2 (en) * 1980-04-16 1984-06-30 豊和工業株式会社 Vehicle air conditioner
WO1983000411A1 (en) * 1981-07-20 1983-02-03 Murakami, Yoshihiro Amplitude modulation circuit
EP0083664A1 (en) * 1981-07-20 1983-07-20 Sanyo Electric Co., Ltd Amplitude modulation circuit
US4520328A (en) * 1981-07-20 1985-05-28 Sanyo Electric Co. Ltd. Amplitude modulation circuit having stable modulation characteristics

Also Published As

Publication number Publication date
JPS6022845B2 (en) 1985-06-04

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