Ultrasound transducers with reduced sidelobes and method for...

Details Ultrasound transducers with reduced sidelobes and method for... Ultrasound transducers with reduced sidelobes and method for...

H - Electricity

04

R

H04R 17/00 (2006.01) A61B 8/00 (2006.01) B06B 1/06 (2006.01)

Patent

CA 2119954

A transducer has tapered piezoelectric layer sides in order to reduce the sidelobe levels. In addition, matching layers disposed on the piezoelectric layer may similarly be tapered to further increase performance. Alternative to tapering the piezoelectric layer, the top electrode and/or the matching layers may be reduced in size relative to the piezoelectric layer such that they generate a wave which destructively interferes with the undesirable lateral wave. There are also described methods for manufacturing a reduced sidelobe transducer.

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