Surface acoustic wave device

Details Surface acoustic wave device Surface acoustic wave device

1998-06-23

2000-10-03

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

333193, H01L 4108

Patent

active

06127769&

ABSTRACT:
A surface acoustic wave device includes a surface acoustic wave substrate having first and second end surfaces, and a surface acoustic wave element provided on the surface acoustic wave substrate and operating using an SH-type surface acoustic wave. The surface acoustic wave element includes an interdigital transducer having a plurality of electrode fingers and a reflector having a plurality of electrode fingers. One of a pair of outermost electrode fingers is flush with one of the first and second end surfaces of the surface acoustic wave substrate, and the reflector is located at a side where the other of the pair of outermost electrode fingers is positioned, so that a SH-type surface acoustic wave excited by the IDT is confined between the reflector and the one of the first and second end surfaces.

REFERENCES:
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patent: 5714830 (1998-02-01), Kadota et al.
patent: 5767603 (1998-06-01), Kadota et al.
patent: 5793147 (1998-08-01), Kadota et al.
patent: 5802685 (1998-09-01), Kadota et al.
patent: 5838217 (1998-11-01), Kadota et al.
patent: 5914554 (1999-06-01), Kadota et al.
IEEE Transactions on Microwave Theory and Techniques, vol. 44, No. 12, Dec. 1996 "A Bleustein--Gulyaev--Shimizu Wave Resonator Having Resonances for TV and VCR Tapes".

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