Unidirectional transducer for a surface-acoustic-wave device and

Details Unidirectional transducer for a surface-acoustic-wave device and Unidirectional transducer for a surface-acoustic-wave device and

1983-04-07

1985-06-04

Wong, Peter S.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

333151, 333154, 333194, H03H 925

Patent

active

045217114

ABSTRACT:
A surface-acoustic-wave device includes a transducer in which three transducer electrodes are provided on a non-piezoelectric or piezoelectric substrate with 0.degree., 120.degree. and 240.degree. phases, and one of the leading electrodes connected to one of the transducer electrodes extends along the surface of a piezoelectric layer provided on the substrate.

REFERENCES:
patent: 3686518 (1972-08-01), Hartmann et al.
patent: 3893048 (1975-07-01), Lieberman
patent: 4267533 (1981-05-01), Dempsey et al.
patent: 4328473 (1982-05-01), Montress et al.
patent: 4350916 (1982-09-01), August et al.
Shimizu et al., "Unidirectional SAW Transducers with ZnO Film on Glass Substrate", Electronics Letters, vol. 13, No. 13, Jun. 23, 1977.

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