B - Operations – Transporting – 06 – B
Patent
B - Operations, Transporting
06
B
B06B 1/06 (2006.01) A61B 8/00 (2006.01) A61B 8/12 (2006.01) G01N 29/06 (2006.01) G01N 29/22 (2006.01)
Patent
CA 2753746
A high frequency ultrasound analog beamformer comprises a linear array of surface acoustic wave (SAW) devices formed on a single crystal piezoelectric substrate, such as a PMN- PT single crystal piezoelectric substrate. Each SAW device comprises ultrasound input and output electrode structures separated by a variable delay structure. The beamformer further com-prises a delay controller operably connected to each variable delay structure to control the delay of each SAW device to dynami-cally focus signals received at each input electrode.
L'invention porte sur un dispositif de formation de faisceau analogique ultrasonore haute fréquence qui comprend un groupement linéaire de dispositifs à ondes acoustiques de surface (SAW) formés sur un substrat piézo-électrique monocristallin, tel qu'un substrat piézo-électrique monocristallin PMN-PT. Chaque dispositif SAW comporte des structures d'électrode d'entrée et de sortie d'ultrasons séparées par une structure à retard variable. Le dispositif de formation de faisceau comporte en outre un dispositif de commande de retard fonctionnellement connecté à chaque structure à retard variable afin de commander le retard de chaque dispositif SAW pour focaliser de façon dynamique des signaux reçus au niveau de chaque électrode d'entrée.
Adamson Robert Bruce Alexander
Brown Jeremy
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Dalhousie University
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