JPS57212805A - Voltage controlled oscillating circuit - Google Patents

Voltage controlled oscillating circuit

Info

Publication number
JPS57212805A
JPS57212805A JP56097875A JP9787581A JPS57212805A JP S57212805 A JPS57212805 A JP S57212805A JP 56097875 A JP56097875 A JP 56097875A JP 9787581 A JP9787581 A JP 9787581A JP S57212805 A JPS57212805 A JP S57212805A
Authority
JP
Japan
Prior art keywords
circuit
collector
bias
oscillation
change
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
JP56097875A
Other languages
Japanese (ja)
Other versions
JPH0153522B2 (en
Inventor
Mitsuo Isobe
Tetsuo Kuchiki
Namio Yamaguchi
Toshihide Tanaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56097875A priority Critical patent/JPS57212805A/en
Publication of JPS57212805A publication Critical patent/JPS57212805A/en
Publication of JPH0153522B2 publication Critical patent/JPH0153522B2/ja
Granted 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
    • H03B5/1231—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
    • 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
    • H03B5/1237—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 comprising means for varying the frequency of the generator
    • H03B5/1256—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 comprising means for varying the frequency of the generator the means comprising a variable inductance

Landscapes

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

Abstract

PURPOSE:To prevent interference between circuit blocks, by keeping a DC bias of a collector of an oscillation transistor pair to a constant value to a voltage controlled operation of the oscillating frequency and constituting a balanced circuit in AC. CONSTITUTION:A variable voltage source circuit consisting of resistors 17 and 18 which detect the current change in oscillation transistor (TR) pairs 11 and 12 from a variable current source 22 and convert the change into a voltage change, and of buffer TR 24, is provided, and the output of the variable voltage source circuit is applied to a collector of the TRs 11 and 12 via the bias resistors 17 and 18. Since a DC bias of the collector of the oscillation TR pairs is kept constant to a voltage control operation of the oscillation frequency with a variable voltage source circuit and a balanced type AC circuit is formed, the output obtained from each collector has phases different from 180 deg. relatively and the amplitude level is the same. Thus, no interference between the circuit blocks is caused.
JP56097875A 1981-06-24 1981-06-24 Voltage controlled oscillating circuit Granted JPS57212805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56097875A JPS57212805A (en) 1981-06-24 1981-06-24 Voltage controlled oscillating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56097875A JPS57212805A (en) 1981-06-24 1981-06-24 Voltage controlled oscillating circuit

Publications (2)

Publication Number Publication Date
JPS57212805A true JPS57212805A (en) 1982-12-27
JPH0153522B2 JPH0153522B2 (en) 1989-11-14

Family

ID=14203915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56097875A Granted JPS57212805A (en) 1981-06-24 1981-06-24 Voltage controlled oscillating circuit

Country Status (1)

Country Link
JP (1) JPS57212805A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035806A (en) * 1983-08-08 1985-02-23 Nec Corp Voltage control oscillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035806A (en) * 1983-08-08 1985-02-23 Nec Corp Voltage control oscillator

Also Published As

Publication number Publication date
JPH0153522B2 (en) 1989-11-14

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