SE334396B - - Google Patents

Info

Publication number
SE334396B
SE334396B SE1152567A SE1152567A SE334396B SE 334396 B SE334396 B SE 334396B SE 1152567 A SE1152567 A SE 1152567A SE 1152567 A SE1152567 A SE 1152567A SE 334396 B SE334396 B SE 334396B
Authority
SE
Sweden
Prior art keywords
resonators
resonator
coupling
crystal
oscillator
Prior art date
Application number
SE1152567A
Inventor
W Smith
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of SE334396B publication Critical patent/SE334396B/xx

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
    • H03B5/323—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator having more than two terminals
    • 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
    • H03B5/326—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator being an acoustic wave device, e.g. SAW or BAW device

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1,192,560. Crystal oscillator circuits. WESTERN ELECTRIC CO. Inc. 10 Aug., 1967 [17 Aug., 1966], No. 36781/67. Heading H3T. In an oscillator having a crystal tuning means CR comprising a crystal body CW coupling two resonators, one resonator PR is connected in the feedback path of an amplifier, e.g. transistor TR, the other resonator SR is adapted to supply output signals to a load network LN and the coupling is such that depending on whether the other resonator SR is terminated by a low or high impedance the resonators pass energy over substantially only a first or a second pass-band respectively. The trimmers CT 1 and CT 2 tune the primary and secondary resonators PR and SR to the same operating frequency. The coupling between the resonators PR and SR may be critical or less than critical and is varied by adjusting the mass loading of the electrodes E1-E4 or the spacing between electrodes. Frequency drifts of the oscillator tuning relative to the filter tuning due to temperature changes are avoided by forming the resonators PR and SR on the same crystal body.
SE1152567A 1966-08-17 1967-08-16 SE334396B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57294466A 1966-08-17 1966-08-17

Publications (1)

Publication Number Publication Date
SE334396B true SE334396B (en) 1971-04-26

Family

ID=24290014

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1152567A SE334396B (en) 1966-08-17 1967-08-16

Country Status (5)

Country Link
BE (1) BE702569A (en)
ES (1) ES344476A1 (en)
GB (1) GB1192560A (en)
NL (1) NL6711334A (en)
SE (1) SE334396B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789990A (en) * 1996-02-14 1998-08-04 Rf Monolithics, Inc. Feedback oscillator circuit using a saw resonator filter

Also Published As

Publication number Publication date
NL6711334A (en) 1968-02-19
ES344476A1 (en) 1968-10-16
BE702569A (en) 1968-01-15
GB1192560A (en) 1970-05-20

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