Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate
2008-07-15
2008-07-15
Takaoka, Dean O (Department: 2817)
Wave transmission lines and networks
Coupling networks
Electromechanical filter
C333S133000
Reexamination Certificate
active
07400220
ABSTRACT:
A surface acoustic wave device includes a surface acoustic wave resonator. The surface acoustic wave resonator includes comb-like electrodes and reflection electrodes provided on both sides of the comb-like electrodes, and each of the reflection electrodes has at least two different pitches. It is thus possible to suppress the ripple components.
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Kawachi Osamu
Saitou Yasuyuki
Arent Fox LLP.
Fujitsu Media Devices Limited
Takaoka Dean O
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