Surface acoustic wave transducing device

Details Surface acoustic wave transducing device Surface acoustic wave transducing device

1996-08-09

2000-06-06

Budd, Marr O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313R, H01L 4108

Patent

active

060722630

ABSTRACT:
A surface acoustic wave position-sensing device comprising a piezoelectric substrate, a nonpiezoelectric plate and an interdigital transducer formed on one end surface of the piezoelectric substrate. The piezoelectric substrate is mounted on an upper end surface of the nonpiezoelectric plate through the interdigital transducer. When using the surface acoustic wave transducing device as an input device, an electric signal is applied to the interdigital transducer. In this time, a surface acoustic wave is excited in the piezoelectric substrate, and then transmitted to the upper end surface of the nonpiezoelectric plate. When using the surface acoustic wave transducing device as an output device, a surface acoustic wave transmitted from the upper end surface of the nonpiezoelectric plate to the piezoelectric substrate is transduced to an electric signal at the interdigital transducer.

REFERENCES:
patent: 5160869 (1992-11-01), Nakahata et al.
patent: 5329208 (1994-07-01), Imai et al.

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