Surface acoustic wave device

Details Surface acoustic wave device Surface acoustic wave device

2007-01-16

2008-01-01

San Martin, J. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S31300R, C310S360000, C310S361000

Reexamination Certificate

active

07315107

ABSTRACT:
A surface acoustic wave device includes a LiNbO3substrate with a Euler angle in an area defined by a rectangle having four corners with coordinates (1) (0°, 7°, 101°), (2) (0°, 23°, 79°), (3) (0°, 23°, 79°), and (4) (0°, 7°, 79°), for example, and an electrode film made of Au, wherein surface acoustic waves including a longitudinal wave component as a main component are propagated thereon. The surface acoustic wave device uses longitudinal surface acoustic waves having a phase speed greater than with the “slow transverse wave”, and has a great electromechanical coupling coefficient and small propagation loss, and is suitable for handling high-frequency signals.

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Official communication issued in the counterpart Japanese Application No. 2003-193134, mailed on Aug. 14, 2007.

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