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US 8,138,856 B2Granted
High-frequency acoustic wave device
AssigneesCentre National De La Recherche Scientifique, Universite De Franche-Comte
InventorsAbdelkrim Khelif, Abdelkrim Choujaa, Vincent Laude
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Abstract
An acoustic wave device comprising a piezoelectric layer on an omnidirectional acoustic mirror and excitation and/or reception means on a surface of said piezoelectric layer, capable of exciting waves in a band gap of the acoustic mirror.
Claims15
An acoustic wave device comprising:
- a piezoelectric layer on an acoustic mirror, and
- excitation/reception means on a surface of said piezoelectric layer, capable of exciting waves in a predetermined frequency band gap of the acoustic mirror,
- wherein the acoustic mirror is omnidirectional such that all waves of all incidences within the band gap are reflected.
An acoustic wave device comprising:
- a piezoelectric layer disposed on an omnidirectional acoustic mirror;
- a transmitter arrangement disposed on a first surface of said piezoelectric layer;
- and
- a receiver arrangement disposed on the first surface of said piezoelectric layer,
- wherein said transmitter arrangement is configured to excite waves in a frequency band gap of said omnidirectional acoustic mirror such that all waves of all incidences are reflected within the band gap, to thereby propagate guide waves in said piezoelectric layer.
2 more elements
Dependencies are inferred from the claim text.