Piezoelectric crystal element
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United States of America Patent
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-
Nov 29, 1994
Grant Date -
N/A
app pub date -
Feb 17, 1994
filing date -
Mar 4, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For surface acoustic wave devices temperature-compensated piezoelectric crystal elements with one or more planar faces are used. An improvement in temperature stability may be expected if the crystal element is made from GaPO.sub.4 and the planar face is defined by Euler angles .lambda. in the range of 0.degree., .mu. in the range of 40.degree. to 75.degree., i.e. preferably 50.degree. to 60.degree., and .theta. in the range of 0.degree..
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