Broad Bandwidth Composite Transducers.
Patent, Filed 29 Jan 82, patented 27 Nov 84,
DEPARTMENT OF THE NAVY WASHINGTON DC
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A broad bandwidth electro-mechanical transducer is shaped into a wedge of varying thickness, with a plurality of PZT elements or sheets embedded in an inactive polymer. The transducer is driven at frequencies corresponding t resonance of the thickness dimensions. The piezoelectric elements with different thicknesses are decoupled mechanically from one another using an inactive polymer of low Q so as to prevent interference. Patent
- Electrical and Electronic Equipment
- Test Facilities, Equipment and Methods