Surface acoustic wave transducing device

Details Surface acoustic wave transducing device Surface acoustic wave transducing device

1996-08-09

1998-06-02

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

057605238

ABSTRACT:
A surface acoustic wave transducing device comprising a piezoelectric substrate, a nonpiezoelectric plate and an interdigital transducer formed on an upper end surface of the piezoelectric substrate. One end surface of the nonpiezoelectric plate is mounted on the upper end surface of the piezoelectric substrate 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 on an area, in contact with the interdigital transducer, of the upper end surface of the piezoelectric substrate, and then, the surface acoustic wave is transmitted to the nonpiezoelectric plate. When using the surface acoustic wave transducing device as an output device, a surface acoustic wave transmitted from the nonpiezoelectric plate to an area, in contact with the interdigital transducer, of the upper end surface of the piezoelectric substrate, is transduced to an electric signal at the interdigital transducer.

REFERENCES:
patent: 5235233 (1993-08-01), Yamamoto

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