Acoustic transducer with a quarter wavelength adaptation...

Details Acoustic transducer with a quarter wavelength adaptation... Acoustic transducer with a quarter wavelength adaptation...

H - Electricity

04

R

349/67.1

H04R 17/00 (2006.01) G10K 11/02 (2006.01) H01L 41/08 (2006.01)

Patent

CA 1151285

ABSTRACT Disclosed is an acoustic transducer which operates very well during transmission as well as during reception. The transducer comp- rises a transmitter consisting of a plate of piezoelectric ceramic material with a pair of electrodes and a receiver consisting of a layer of piezoelectric or ferroelectric polymer material with a pair of electrodes, one of which may be shared with the transmitter. The receiver forms an adaptation layer for the transmitter so that optimum operation of the transducer is possible during transmission as well as during reception.

354478

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