Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances
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United States of America Patent
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Aug 7, 2001
Issued Date -
N/A
app pub date -
Jul 30, 1999
filing date -
May 28, 1996
priority date (Note) -
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Abstract
A surface acoustic wave device supported by a package body. At least one surface acoustic wave element having interdigital electrodes disposed on a propagation path of a surface acoustic wave on the piezoelectric substrate. These interdigital electrodes include an input-side interdigital electrode connected to a ground pad on the package body and an output-side interdigital electrode connected to another ground pad on the package body.
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