Surface acoustic wave device

Details Surface acoustic wave device Surface acoustic wave device

1983-06-01

1984-06-26

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313B, H01L 4108

Patent

active

044568479

ABSTRACT:
A surface acoustic wave device comprises a lower electrode provided on an elastic substrate, a piezoelectric film covering the lower electrode and an upper electrode provided on the piezoelectric film. The device is characterized in that the upper electrode comprises first and second double electrodes both opposed to the lower electrode.

REFERENCES:
patent: 3401360 (1968-09-01), Bois
patent: 3723919 (1973-03-01), Adler
patent: 3938062 (1976-02-01), Hopp
patent: 3955160 (1976-05-01), Duffy
patent: 3987376 (1976-10-01), Kerbel
patent: 4037176 (1977-07-01), Ono et al.
patent: 4162465 (1979-07-01), Hunsinger et al.
patent: 4209759 (1980-06-01), Volluet
patent: 4354130 (1982-10-01), Ono et al.

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