Surface acoustic wave identification tag having enhanced...

Details Surface acoustic wave identification tag having enhanced... Surface acoustic wave identification tag having enhanced...

G - Physics

06

K

G06K 19/067 (2006.01) G01S 13/02 (2006.01) G01V 15/00 (2006.01) G10K 11/36 (2006.01) H03B 5/32 (2006.01) H03H 3/08 (2006.01) H03H 9/25 (2006.01) H03H 9/64 (2006.01) G01S 13/75 (2006.01)

Patent

CA 2469908

A surface acoustic wave (SAW) identification tag and methods of operating and manufacturing the tag. In one embodiment, the tag includes: (1) a piezoelectric substrate having a SAW transducer located thereon, (2) a group of slots arranged by both pulse position and phase position on said substrate; and (3) a number of reflectors distributed among the slots such that the reflectors encode a number by both pulse position and phase position.

L'invention concerne une étiquette d'identification à onde acoustique de surface (SAW) et des procédés de fonctionnement et de fabrication correspondants. Dans un mode de réalisation décrit dans l'invention, l'étiquette comprend: (1) un substrat piézoéléctrique sur lequel est placé un transducteur SAW, (2) plusieurs encoches ménagées à la fois par position d'impulsion et par position de phase sur ledit substrat; et (3) plusieurs réflecteurs répartis entre les encoches, de telle sorte que les réflecteurs puissent coder un nombre à la fois par position d'impulsion et par position de phase.

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