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Control Voltage Generator for a Clock, Frequency Reference, and Other Reference Signal Generator

  • US 20090146719A1
  • Filed: 01/12/2008
  • Published: 06/11/2009
  • Est. Priority Date: 12/05/2007
  • Status: Active Grant
First Claim
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1. An apparatus to generate a harmonic reference signal, the apparatus comprising:

  • a reference resonator to generate a first reference signal having a resonant frequency;

    a control voltage generator adapted to provide a temperature-dependent control voltage; and

    a plurality of variable reactance modules couplable to the reference resonator and couplable to the control voltage generator, each reactance module of the plurality of variable reactance modules adapted to modify a corresponding reactance in response to the control voltage to maintain the resonant frequency within a predetermined variance over a predetermined temperature range.

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