Method of adjusting frequency of NS-GT cut quartz resonator
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United States of America Patent
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Nov 21, 1995
Grant Date -
N/A
app pub date -
Mar 3, 1994
filing date -
Mar 12, 1993
priority date (Note) -
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Abstract
A method of adjusting a frequency-to-temperature coefficient of an NS-GT cut quartz resonator comprises providing a coupling resonator having a first order temperature coefficient .alpha..sub.+. A normalized frequency .delta. of the coupled vibrational modes is then calculated according to the relationship .alpha..sub.+ =m.delta.+n, where m and n are constants. The normalized frequency .delta. is then adjusted according to the relationship .alpha..sub.+ =m.delta.+n to set the first order temperature coefficient to substantially zero.
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