GB1340971A - Oscillators - Google Patents

Oscillators

Info

Publication number
GB1340971A
GB1340971A GB1340971DA GB1340971A GB 1340971 A GB1340971 A GB 1340971A GB 1340971D A GB1340971D A GB 1340971DA GB 1340971 A GB1340971 A GB 1340971A
Authority
GB
United Kingdom
Prior art keywords
multipliers
terminal
potentiometers
integrator
oscillators
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.)
Expired
Application number
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of GB1340971A publication Critical patent/GB1340971A/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
    • H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
    • 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
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/0078—Functional aspects of oscillators generating or using signals in quadrature
    • 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
    • H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
    • H03B2201/01—Varying the frequency of the oscillations by manual means
    • 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
    • H03B27/00—Generation of oscillations providing a plurality of outputs of the same frequency but differing in phase, other than merely two anti-phase outputs

Landscapes

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

Abstract

1340971 Oscillators; phase modulation MARCONI CO Ltd 1 Dec 1972 [4 Jan 1972] 215/72 Headings H3F and H3R In an oscillator comprising two integrators 1, 2 connected in series, the feedback path 3 being completed over an inverter 4, two multipliers 17, 18 are inserted in the feedback loop. According as the second input, from terminal 19, to the multipliers is positive or negative the output from integrator 1, at terminal 14, precedes or appears after, the 90 degree phase-shifted output from integrator 2 at terminal 13. The Specification also refers to a known arrangement in which the multipliers are replaced by potentiometers (Fig. 1, not shown), the frequency of oscillation depending upon the setting of the potentiometers.
GB1340971D 1972-01-04 1972-01-04 Oscillators Expired GB1340971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21572 1972-01-04

Publications (1)

Publication Number Publication Date
GB1340971A true GB1340971A (en) 1973-12-19

Family

ID=9700454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1340971D Expired GB1340971A (en) 1972-01-04 1972-01-04 Oscillators

Country Status (1)

Country Link
GB (1) GB1340971A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459566A (en) * 1982-05-28 1984-07-10 General Electric Company Voltage controlled oscillator using a voltage tunable filter with feedback

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459566A (en) * 1982-05-28 1984-07-10 General Electric Company Voltage controlled oscillator using a voltage tunable filter with feedback

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee