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Temperature compensated resonator

  • US 5,304,968 A
  • Filed: 10/28/1992
  • Issued: 04/19/1994
  • Est. Priority Date: 10/31/1991
  • Status: Expired due to Term
First Claim
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1. A temperature compensated radio frequency resonator, comprising:

  • an electrically conducting housing provided with a side surface, a bottom surface and a top surface;

    a conductive post inside the housing and having one end electrically connected to the bottom surface and another end spaced from the top surface;

    a compensation plate within said housing and having a center part spaced from the top surface, said center part rigidly attached to at least at two opposite edge parts which are attached to said top surface,said compensation plate having a coefficient of thermal expansion that is less than a coefficient of thermal expansion of the top surface, whereby in response to a rise in temperature, the center part of the compensation plate is urged towards the top surface so as to counter capacitive change effects occurring as a result of said rise in temperature.

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