Ultrasonic transducer using piezoelectric composite

Details Ultrasonic transducer using piezoelectric composite Ultrasonic transducer using piezoelectric composite

1985-07-23

1987-04-14

Wong, Peter S.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310357, 310358, H01L 4108

Patent

active

046581766

ABSTRACT:
An ultrasonic transducer using a piezoelectric composite in which a plurality of piezoelectric poles are arranged in matrix maintaining a gap and a polymer is charged into the gap. The piezoelectric poles are arranged maintaining a pitch which is shorter than a wavelength of a sound wave at a fundamental resonance frequency of the transducer in a medium. Further the pitch may be changed in a direction in which the piezoelectric poles are arranged, in order to restrain the grating lobe from generating.

REFERENCES:
patent: 4412148 (1983-10-01), Klicker et al.
patent: 4518889 (1985-05-01), T Hoen

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