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GB1352808A - Temperature compensation of quartz crystals - Google Patents

Temperature compensation of quartz crystals

Info

Publication number
GB1352808A
GB1352808A GB2881672A GB2881672A GB1352808A GB 1352808 A GB1352808 A GB 1352808A GB 2881672 A GB2881672 A GB 2881672A GB 2881672 A GB2881672 A GB 2881672A GB 1352808 A GB1352808 A GB 1352808A
Authority
GB
United Kingdom
Prior art keywords
representative
voltage
input
characteristic
output
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
GB2881672A
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 GB1352808A publication Critical patent/GB1352808A/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
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/023—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1352808 Oscillators MARCONI CO Ltd 20 June 1972 [24 June 1971] 28816/72 Heading H3F A temperature compensating arrangement for a quartz crystal comprises converting means 1 for deriving a first voltage proportional to temperature, means responsive to its output to generate therefrom a voltage inversely representative of the #f/f versus temperature of the crystal 4, the responsive means including provision for one or more fixed voltages representative of constants in the said characteristic to form part of the inversely representative voltage, and means 3 responsive to the inversely representative voltage to vary the effective reactance controlling the operative frequency of the crystal. Correction for a cubic characteristic is obtained, the output from device 1 being applied to the two inputs 6, 8 of an analogue multiplier 2a: input 7 is earthed and a fixed voltage representative of a constant in the characteristic is applied to input 10. The output from device 1 is also applied to one input 8 of a second analogue multiplier 2b, inputs 6, 7 of which receive outputs from multiplier 2a and input 11 a fixed voltage representative of a second constant in the characteristic.
GB2881672A 1971-06-24 1972-06-20 Temperature compensation of quartz crystals Expired GB1352808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU530471 1971-06-24

Publications (1)

Publication Number Publication Date
GB1352808A true GB1352808A (en) 1974-05-15

Family

ID=3695765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2881672A Expired GB1352808A (en) 1971-06-24 1972-06-20 Temperature compensation of quartz crystals

Country Status (2)

Country Link
CA (1) CA965850A (en)
GB (1) GB1352808A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309075A1 (en) * 1975-04-23 1976-11-19 Sony Corp TEMPERATURE EFFECT COMPENSATION CIRCUIT
EP0129618A1 (en) * 1983-05-25 1985-01-02 Stc Plc Temperature controlled crystal oscillator
US4560959A (en) * 1982-05-18 1985-12-24 Standard Telephones And Cables Public Limited Company Temperature controlled crystal oscillator arrangement
CN114911299A (en) * 2022-07-18 2022-08-16 深圳市英特瑞半导体科技有限公司 High-order function generating circuit and device for crystal oscillator temperature compensation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309075A1 (en) * 1975-04-23 1976-11-19 Sony Corp TEMPERATURE EFFECT COMPENSATION CIRCUIT
US4560959A (en) * 1982-05-18 1985-12-24 Standard Telephones And Cables Public Limited Company Temperature controlled crystal oscillator arrangement
AU567096B2 (en) * 1982-05-18 1987-11-12 Nortel Networks Corporation Temperature compensated crystal oscillator
EP0129618A1 (en) * 1983-05-25 1985-01-02 Stc Plc Temperature controlled crystal oscillator
CN114911299A (en) * 2022-07-18 2022-08-16 深圳市英特瑞半导体科技有限公司 High-order function generating circuit and device for crystal oscillator temperature compensation
CN114911299B (en) * 2022-07-18 2022-10-28 深圳市英特瑞半导体科技有限公司 High-order function generating circuit and device for crystal oscillator temperature compensation

Also Published As

Publication number Publication date
CA965850A (en) 1975-04-08

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Legal Events

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