High efficiency ultrasonic transducer driver

Details High efficiency ultrasonic transducer driver High efficiency ultrasonic transducer driver

G - Physics

01

D

G01D 5/14 (2006.01)

Patent

CA 2484772

The subject of the invention is an innovative design of an ultrasonic transducer driver. The design utilizes two quarter-wavelength layers made out of light rigid polymer foam materials; one operating in the eddy-like wave mode, the other one in he longitudinal wave mode. The first layer transforms radial vibrations of piezoelectric ring into "eddy mode" (toroidal-like) vibration pattern, the second layer transforms the eddy mode vibrations of the first layer into pure longitudinal vibration of the front face,. Such arrangement maximizes efficiency of he overall transfer of acoustic energy from a piezo-electric element into gasous medium. At the same time, such a design achieves optimal (intrinsic) damping effect exerted onto the piezo-electric element resulting in very short ring-down, without having to apply additional damping materials or potting compound that would increase losses and reduce efficiency.

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