SURFACE-ACOUSTIC WAVE DEVICE

SURFACE-ACOUSTIC WAVE DEVICE

PROBLEM TO BE SOLVED: To obtain a surface-acoustic wave device, capable of effectively confining the energy of a surface wave and reducing a loss and improving the filter characteristics. SOLUTION: The surface-acoustic wave device comprises at least one comb- like electrode 14, having a plurality of...

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Bibliographische Detailangaben
Hauptverfasser: TAKADA TOSHIAKI, NAGAI TATSURO, TANIGUCHI NORIO, YAMATO HIDEJI
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To obtain a surface-acoustic wave device, capable of effectively confining the energy of a surface wave and reducing a loss and improving the filter characteristics. SOLUTION: The surface-acoustic wave device comprises at least one comb- like electrode 14, having a plurality of electrode fingers 14a and 14b and first bus bar electrodes 14c and 14d formed on a piezoelectric substrate to excite surface acoustic waves which have an anisotropy index γ