Variable resonance acoustic transducer
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United States of America Patent
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Oct 7, 2014
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N/A
app pub date -
Sep 23, 2011
filing date -
Sep 23, 2011
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Abstract
A transducer assembly is provided for projecting acoustic signals into a medium. The assembly includes a support member having first and second layers of piezoelectric material mechanically linked to the support member. The first and second layers are joined to electrical drive circuitry such that one layer receives a driving voltage signal while the other layer receives the driving voltage with a stiffening voltage. The transducer assembly can use both the 3-1 and 3-3 drive modes. Multiple configurations are supported, and both bender bar and slotted cylinder configurations are shown.
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