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Lower power oscillator with heated resonator (S), with dual mode or other temperature sensing, possibly with an insulative support structure disposed between the resonator (S) and a resonator enclosure

  • US 5,041,800 A
  • Filed: 12/20/1990
  • Issued: 08/20/1991
  • Est. Priority Date: 05/19/1989
  • Status: Expired due to Fees
First Claim
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1. A temperature-controlled resonator oscillator, comprising:

  • a resonator;

    a heating element in substantially direct thermal contact with the resonator, for applying heat to the resonator;

    a heat-sensing device, separated from the resonator by a substantial thermal resistance, for indirectly sensing the temperature of the resonator; and

    a heater control circuit receiving the sensed temperature and generating a heater control signal for determining the manner in which heat is applied to the resonator by the heating element;

    wherein the control circuit provides dynamic control of the resonator'"'"'s resonant frequency through feedback of the sensed temperature.

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