Dispersive interdigital transducer for arrangements operating wi

Details Dispersive interdigital transducer for arrangements operating wi Dispersive interdigital transducer for arrangements operating wi

1986-08-08

1987-10-20

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313B, 333154, 333196, H01L 4108

Patent

active

047016574

ABSTRACT:
A dispersive transducer 100 which has non-equidistant distribution of the finger electrodes 6, 7, 16 and 17 according to band-width such that the finger electrodes 16 and 17 of the low frequency portion 11 of the transducer have a width c and spacing d1 (or d2) which are equal to the corresponding portions of the highest frequency part 13 of the transducer such that reflections are substantially reduced or eliminated.

REFERENCES:
patent: 3845419 (1974-10-01), Nudd
patent: 4258342 (1981-03-01), Miyajima et al.
patent: 4427954 (1984-01-01), Veith
patent: 4507581 (1985-03-01), Tabuchi et al.
Proceedings of IEEE Ultrasonic Symposium, 1974, pp. 224 through 227.
Proceedings IEEE Ultasonic Symposium, 1981, pp. 181-185, 186-191.

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