Surface acoustic wave generator

Details Surface acoustic wave generator Surface acoustic wave generator

1987-08-20

1989-01-17

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313B, 310313D, H01L 4108

Patent

active

047989874

ABSTRACT:
A surface acoustic wave generator includes a transducer array of a plurality of surface acoustic wave transducers having different center frequencies from each other, and a variable frequency oscillator for supplying an HF signal to drive the transducer array. A distributor distributes the HF signal supplied from the oscillator to each of the transducers of the transducer array, and a device provided between each of the transducers and the distributor prevents the HF signals reflected by the transducers from returning to the distributor.

REFERENCES:
patent: 3940685 (1976-02-01), Ebata
patent: 4021761 (1977-05-01), Morii
patent: 4060833 (1977-11-01), Onyshkevych
patent: 4425023 (1984-01-01), Matsumoto et al.
patent: 4453016 (1984-06-01), Verber et al.
patent: 4470661 (1984-09-01), Matsumoto
patent: 4523803 (1985-06-01), Arao et al.
patent: 4693548 (1987-09-01), Tsunoi
patent: 4697115 (1987-09-01), Mitsutsuka
patent: 4707059 (1987-11-01), Ogura et al.

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