GB1482086A - Crystal controlled oscillator arrangement - Google Patents

Crystal controlled oscillator arrangement

Info

Publication number
GB1482086A
GB1482086A GB5597473A GB5597473A GB1482086A GB 1482086 A GB1482086 A GB 1482086A GB 5597473 A GB5597473 A GB 5597473A GB 5597473 A GB5597473 A GB 5597473A GB 1482086 A GB1482086 A GB 1482086A
Authority
GB
United Kingdom
Prior art keywords
frequency
controlled oscillator
oscillator
arrangement
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
GB5597473A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB5597473A priority Critical patent/GB1482086A/en
Priority to DE19742455236 priority patent/DE2455236C3/en
Publication of GB1482086A publication Critical patent/GB1482086A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/20—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a harmonic phase-locked loop, i.e. a loop which can be locked to one of a number of harmonically related frequencies applied to it
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
    • G04G3/027—Circuits for deriving low frequency timing pulses from pulses of higher frequency by combining pulse-trains of different frequencies, e.g. obtained from two independent oscillators or from a common oscillator by means of different frequency dividing ratios
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

1482086 Electronic timepieces STANDARD TELEPHONES & CABLES Ltd 28 Nov 1974 [3 Dec 1973] 55974/73 Heading G3T [Also in Division H3] An arrangement providing a low frequency output for use in timepiece oscillators &c. comprises two high frequency oscillators 1, 2 each including a thickness shear mode Piezo-electric vibrator 3, 4 and an arrangement 6 for deriving the difference frequency and a phase sensitive detector 7 for controlling the frequency f 2 of oscillator 2 such that the difference frequency is a sub-multiple of the oscillator 1 frequency f 1 . The controlled oscillator 2 may include a varactor 5 for effecting frequency control. The vibrators 3, 4 may be arranged on the same Piezo-electric substrate.
GB5597473A 1973-12-03 1973-12-03 Crystal controlled oscillator arrangement Expired GB1482086A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB5597473A GB1482086A (en) 1973-12-03 1973-12-03 Crystal controlled oscillator arrangement
DE19742455236 DE2455236C3 (en) 1973-12-03 1974-11-21 Low-frequency oscillator arrangement with two high-frequency oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5597473A GB1482086A (en) 1973-12-03 1973-12-03 Crystal controlled oscillator arrangement

Publications (1)

Publication Number Publication Date
GB1482086A true GB1482086A (en) 1977-08-03

Family

ID=10475391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5597473A Expired GB1482086A (en) 1973-12-03 1973-12-03 Crystal controlled oscillator arrangement

Country Status (2)

Country Link
DE (1) DE2455236C3 (en)
GB (1) GB1482086A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371091A1 (en) * 1976-10-29 1978-06-09 Thomson Csf PHASE CONTROL DEVICE OF A CARRIER WAVE AND SIDE BANDS GENERATED BY A TRANSMITTER, IN PARTICULAR BY A RADIONAVIGATION TRANSMITTER, AND RADIONAVIGATION TRANSMITTER INCLUDING SUCH A DEVICE
DE3007717C2 (en) * 1980-02-29 1984-12-20 Erich 6603 Sulzbach Scherer Circuit arrangement for electrotherapy
JPS57112137A (en) * 1980-12-29 1982-07-13 Advantest Corp Frequency synthesizer
DE3216631C2 (en) * 1982-05-04 1984-07-12 Siemens AG, 1000 Berlin und 8000 München Oscillator circuit

Also Published As

Publication number Publication date
DE2455236C3 (en) 1978-12-21
DE2455236B2 (en) 1978-05-03
DE2455236A1 (en) 1975-06-12

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee