Multi-layer polymer electroacoustic transducer assembly

Details Multi-layer polymer electroacoustic transducer assembly Multi-layer polymer electroacoustic transducer assembly

1994-02-08

1997-03-04

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

310325, 310334, 310800, H04R 1700

Patent

active

056086920

ABSTRACT:
An electroacoustic transducer assembly which comprises multiple layers of piezoelectric polymer material on an acousto-reflective support member. The inner layer closest to the support member is excited at a fixed frequency and the overall thickness of the multiple layers is about one quarter of the wavelength of the wave of fixed frequency within the layers. In a variation of this structure, the inner layer is subdivided into a plurality of thin layers which are excited with alternating polarities.

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