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US 9,070,865 B1Granted
Transverse mode multi-resonant single crystal transducer
OwnerKevin A. Snook, Yu Liang +3inventors
InventorsKevin A. Snook, Yu Liang, Jun Luo, Wesley S. Hackenberger, Raffi Sahul
Life of this patent
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Abstract
A transducer is disclosed that includes a multiply resonant composite, the composite having a resonator bar of a piezoelectric single crystal configured in a d32 transverse length-extensional resonance mode having a crystallographic orientation set such that the thickness axis is in the <110> family and resonance direction is the <001> family.
Claims21
A transducer comprising:
- a multiply resonant composite, the composite comprising at least two resonator bars of a piezoelectric single crystal configured in a d32 transverse length-extensional resonance mode having a crystallographic orientation set such that the thickness axis is in the <110> family and resonance direction is the <001> family, the resonator bars being of at least two different lengths to provide at least two different d32 resonant frequencies.
A transducer comprising:
- a multiply resonant composite, the composite comprising a plurality of resonator bars of a piezoelectric single crystal, the plurality of resonator bars configured in a d32 transverse length-extensional resonance mode having a crystallographic orientation set such that the thickness axis is in the <110> family and resonance direction is the <001> family,
- wherein the resonator bars are of at least two different lengths to produce at least two different d32 resonant frequencies, and
- wherein the resonator bars are attached to a flexible polymeric film wrapped at least one complete revolution about a cylindrical central structure having a length dimension that is parallel with the length dimension of the resonator bars.
A transducer comprising:
- a multiply resonant composite, the composite comprising a first plurality of resonator bars of a piezoelectric single crystal, each resonator bar of the first plurality of resonator bars configured in a d32 transverse length-extensional resonance mode having a crystallographic orientation set such that the thickness axis is in the <110> family and resonance direction is the <001> family,
- the composite further comprising a second plurality of resonator bar of a piezoelectric single crystal, the second plurality of resonator bars each being configured in a d33 longitudinal length-extensional resonance mode,
- wherein the first and second plurality of resonator bars are attached to a flexible polymeric film at least partially wrapped about a cylindrical central structure having a length dimension that is parallel with the length dimension of the first plurality of resonator bars.
A transducer comprising:
- a multiply resonant composite, the composite comprising a resonator bar of a piezoelectric single crystal configured in a d32 transverse length-extensional resonance mode having a crystallographic orientation set such that the thickness axis is in the <110> family and resonance direction is the <001> family, wherein the composite comprises a second resonator bar of a piezoelectric single crystal, the second resonator bar being configured in a d33 longitudinal length-extensional resonance mode.
A transducer comprising:
- a multiply resonant composite, the composite comprising a resonator bar of a piezoelectric single crystal configured in a d32 transverse length-extensional resonance mode having a crystallographic orientation set such that the thickness axis is in the <110> family and resonance direction is the <001> family, wherein a plurality of resonator bars are attached to a flexible film at least partially wrapped around a central structure.
Dependencies are inferred from the claim text.