Saw tapered transducers

Details Saw tapered transducers Saw tapered transducers

1987-06-24

1990-03-13

Laroche, Eugene R.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313C, 333154, 333195, H03H 9145

Patent

active

049085425

ABSTRACT:
A Surface Wave Acoustic (SAW) is constructed with hyperbolically curved electrode fingers. The transducers consist of relatively narrower inner electrode fingers and relatively wider outer electrode fingers, and may also be divided into a plurality of tracks with each of the tracks being subdivided into a plurality of subtransducer elements which are capacitively coupled in electrical series.

REFERENCES:
patent: 3568102 (1971-03-01), Tseng
patent: 3727718 (1973-04-01), Whitehouse
patent: 3753164 (1973-08-01), DeVries
patent: 3975697 (1976-08-01), Paige
patent: 4126800 (1978-11-01), Shiokawa et al.
patent: 4166228 (1979-08-01), Solie
patent: 4477784 (1984-10-01), Maerfeld et al.
patent: 4521751 (1985-06-01), Riha et al.
patent: 4635008 (1987-01-01), Solie
patent: 4746882 (1988-05-01), Solie
patent: 4749971 (1988-06-01), Solie
K. Yamanouchi and H. Furuyashiki, 1984 IEEE Ultrasonics Symposium, p. 70.

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