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Development of a (3,1) drive multifilm piezopolymer hydrophone

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2 Author(s)
J. Jagannath Bhat ; Dept. of Electron., Cochin Univ. of Sci. & Technol., India ; P. R. Saseendran Pillai

A modified (3,1) drive hydrophone design described here utilizes polarized piezopolymer films taut in the stretch direction by a reformed structural construction. It mainly consists of two opposed polymer films attached to a phosphor bronze diaphragm through a perspex structure. Enhancement in sensitivity is achieved, by connecting the films electrically in series thereby adding up the voltages developed across them due to a given acoustic pressure. The response of the hydrophone for individual films and for their series combination, are measured from 300 Hz to 4 kHz.<>

Published in:

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control  (Volume:42 ,  Issue: 1 )