Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1980-04-16
1982-10-12
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310313B, 310326, 333151, H01L 4108
Patent
active
043541291
ABSTRACT:
A surface acoustic wave device includes a piezoelectric substrate, transmitting and receiving transducers provided on the surface of the substrate for propagating acoustic waves between the transducers, and absorbers provided between an end of the substrate and respective transducers for absorbing unwanted acoustic waves. The shape of the absorber is in relation to the energy distribution of the acoustic waves.
REFERENCES:
patent: 4013834 (1977-03-01), Kino
patent: 4090153 (1978-05-01), Toda et al.
patent: 4096455 (1978-06-01), Drummond
patent: 4139791 (1979-02-01), Yamada
Budd Mark O.
Murata Manufacturing Co. Ltd.
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