Surface acoustic wave filter
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United States of America Patent
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-
Dec 2, 1997
Grant Date -
N/A
app pub date -
Jun 3, 1996
filing date -
Jul 8, 1993
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A surface acoustic wave (SAW) filter includes a plurality of interdigital transducers located on a piezoelectric substrate along a surface wave propagation direction, at least a single one-port SAW resonator connected in series with an output side of the SAW filter, while the resonance frequency of the SAW resonator is set at a level which is higher than the passband of the SAW filter.
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