Method for manufacturing quartz crystal oscillator
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United States of America Patent
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Nov 1, 2005
Grant Date -
Oct 23, 2003
app pub date -
Apr 11, 2003
filing date -
Apr 23, 2002
priority date (Note) -
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Abstract
In a method for manufacturing a quartz crystal oscillator, at least one of a chemical etching method, a physical etching method, and a mechanical method is utilized to form a quartz crystal tuning fork resonator having a quartz crystal tuning fork base, quartz crystal tuning fork tines connected to the quartz crystal tuning fork base, a fundamental mode of vibration, and a second overtone mode of vibration each comprised of a flexural mode of an inverse phase. An amplification circuit is provided having at least an amplifier. A feedback circuit is provided having the quartz crystal tuning fork resonator and capacitors. The amplifier of the amplification circuit and the quartz crystal tuning fork resonator and capacitors of the feedback circuit are electrically connected together.
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