Boundary acoustic wave device
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United States of America Patent
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Jan 29, 2008
Grant Date -
Jan 4, 2007
app pub date -
Sep 5, 2006
filing date -
Mar 5, 2004
priority date (Note) -
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Abstract
A boundary acoustic wave device includes a dielectric body disposed over one surface of a LiTaO.sub.3 piezoelectric body, and an electrode including an IDT and reflectors at the boundary between the piezoelectric body and the dielectric body. The thickness of the electrode is set so that the acoustic velocity of the SH boundary acoustic waves is less than the acoustic velocities of slow transverse waves propagating in the dielectric body and slow transverse waves propagating in the piezoelectric body.
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