Surface acoustic wave device

Details Surface acoustic wave device Surface acoustic wave device

2006-03-07

2006-03-07

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S31300R, C310S363000, C310S364000

Reexamination Certificate

active

07009325

ABSTRACT:
A surface acoustic wave device using second leaky surface acoustic waves the dominant component of which is a longitudinal wave component includes a LiTaO3substrate and a conductive film formed on the LiTaO3substrate. The density ρ of the conductive film is in the range of about 2,699 kg/m3to about 19,300 kg/m3.

REFERENCES:
patent: 4544857 (1985-10-01), Shimizu et al.
patent: 6734599 (2004-05-01), Flowers et al.
patent: 6791237 (2004-09-01), Yamanouchi
patent: 08-288788 (1996-11-01), None
Takahiro Sato et al., “Longitudinal Leaky Surface Acoustic Wave on Li2B4O7”, O&E Components Division, Japan Energy Corp., p. 1-446, 1994.
Shigetaka Tonami et al., “Characteristics of Leaky Surface Acoustic Waves Propagating on LiNbO3and LiTaO3Substrates”, Japanese Journal Applied Physics, vol. 34 (1995), pp. 2664-2667, Part I. No. 5B, May 1995.

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