Transducer comprising a network of piezoelectric elements

Details Transducer comprising a network of piezoelectric elements Transducer comprising a network of piezoelectric elements

1985-05-15

1986-07-29

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310334, H01L 4108

Patent

active

046032762

ABSTRACT:
An ultrasonic transducer comprising a network of parallel piezoelectric transducer elements having a width W or in the form of a parallelepipedon having a length H and a width W, characterized in that the thickness T of the said transducer elements is equal to half the wavelength corresponding to a frequency F which is equal to the average value of at least two of the successive piezoelectric resonance frequencies of the piezoelectric material concerned, the products of the thickness and the resonance frequencies framing at least two successive vibratory modes of this material in the bidimensional diagram of the curves F.multidot.T=f(W/T) of the spread of the resonance frequencies relating to the piezoelectric material concerned or in the tridimensional diagram of the curves F.multidot.T=f(W/T, H/T).

REFERENCES:
patent: 4101795 (1978-07-01), Fukumoto
patent: 4139793 (1979-02-01), Michel
patent: 4247797 (1981-01-01), Echigo et al.
patent: 4305014 (1981-12-01), Borburgh et al.
patent: 4525647 (1985-06-01), Dworsky

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