Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1982-09-02
1984-05-01
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310317, 310366, H01L 4108
Patent
active
044463960
ABSTRACT:
A piezoelectric crystal with several concentric ring electrodes on one side of the crystal. A resistor network applies different amplitudes of an AC source to each of the several electrodes. A plot of the different amplitudes from the outermost electrode to the innermost electrode is the first half of a Gaussian function. Consequently, the output of the crystal from the side opposite the electrodes has a Gaussian profile.
REFERENCES:
patent: 2875355 (1959-02-01), Petermann
patent: 3090030 (1963-05-01), Schuck
patent: 4129799 (1978-12-01), Green
patent: 4155259 (1979-05-01), Engeler
patent: 4211948 (1980-07-01), Smith
patent: 4398116 (1983-08-01), Lewis
Claus Richard O.
Zerwekh Paul S.
Budd Mark O.
King William H.
Manning John R.
Osborn Howard J.
The United States of America as represented by the Administrator
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