New design of a dual-mode quartz crystal oscillator

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New design of a dual-mode quartz crystal oscillator

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© The Institution of Electrical Engineers
Published

A new method has been developed to drive a single quartz crystal in both of its modes. Using a modulator and a demodulator the oscillator provides a C mode frequency output directly as well as the difference frequency between the C and B modes. Results concerning this dual-mode oscillator used in a digital temperature compensated quartz crystal oscillator (DTCXO) are reported.

Inspec keywords: crystal resonators; variable-frequency oscillators; quartz

Other keywords: demodulator; dual-mode quartz crystal oscillator; C mode frequency output; B modes; modulator

Subjects: Oscillators; Piezoelectric and ferroelectric devices

References

    1. 1)
      • J.A. Kusters , J.G. Leach , M.C. Fischer . Oscillator having a quartz resonator cut to compensate for static and dynamic thermal transients. Brevet d'invention , 4 , 160 - 183
    2. 2)
      • Kusters, J.A., Fischer, M.C., Leach, J.G.: Proceedings of 32nd annual symposium on frequency control, 1978.
    3. 3)
      • A. Ballato . (1977) Doubly rotated thickness mode plate vibrators, Phys. Acoust..
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