Surface acoustic wave device

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices

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310313R, 333194, H01L 4100

Patent

active

043968511

ABSTRACT:
A surface acoustic wave device is provided with plural sets of input and output transducers arranged on a piezoelectric substrate with the input transducers and the output transducers being connected electrically in parallel, respectively. In order to minimize a loss which occurs due to the parallel connections of the input and output transducers, aperture dimensions of either the input transducers or the output transducers are selected such that static capacitances of the respective transducers are equal.

REFERENCES:
patent: 3894251 (1975-07-01), Shibayama et al.
patent: 4035675 (1977-07-01), Malocha et al.
patent: 4143340 (1979-03-01), Hunsinger
patent: 4166257 (1979-08-01), Subramanian
E. L. Walker, "Designing Surface Acoustic Wave Filters", IBM Technical Disclosure Bulletin, vol. 19, No. 9, Feb. 1977, pp. 3526-3528.

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