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US 12,725,603 B2Granted
Multi-element electromagnetic acoustic transducer for guided wave generation and detection
AssigneeEcole De Technologie Superieure
InventorsPierre Belanger, Aurélien Thon
Life of this patent
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Abstract
There is provided an electromagnetic acoustic transducer comprising a waveguide having a surface, and a plurality of spaced elements arranged in an array on the surface of the waveguide. Each element of the plurality of elements comprises a magnet and a coil wound around the magnet. A direction of magnetization of the plurality of elements alternating from one of the plurality of elements to a next one of the plurality of elements.
Claims21
An electromagnetic acoustic transducer comprising:
- a waveguide having a surface;
- and
- a plurality of transducer elements comprising a plurality of magnets spaced apart from one another and arranged in an array on the surface of the waveguide and a plurality of coils each coil of the plurality of coils wound around a respective magnet of the plurality of magnets to form a respective transducer element of the plurality of transducer elements, a direction of magnetization of the plurality of transducer elements alternating from one of the plurality of transducer elements to a next one of the plurality of transducer elements to generate opposite currents from the one of the plurality of transducer elements to the next one of the plurality of transducer elements.
A method for providing an electromagnetic acoustic transducer, the method comprising:
- providing a plurality of transducer elements, a plurality of magnets, and a plurality of coils, each coil of the plurality of coils wound around a respective magnet of the plurality of magnets to form a respective transducer element of the plurality of transducer elements
- providing a waveguide having a surface;
- and
- arranging the plurality of transducer elements in an array on the surface of the waveguide, with a direction of magnetization of the plurality of transducer elements alternating from one of the plurality of transducer elements to a next one of the plurality of transducer elements to generate opposite currents from the one of the plurality of transducer elements to the next one of the plurality of transducer elements.
1 more element
Dependencies are inferred from the claim text.