Surface acoustic wave identification tag having enhanced data content and methods of operation and manufacture thereof
AssigneeRF SAW Components, Incorporated
InventorClinton S. Hartmann
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Abstract
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.
Claims36
A surface acoustic wave (SAW) identification tag, comprising:
- a piezoelectric substrate having a SAW transducer located thereon;
- a group of slots arranged by both pulse position and phase position on said substrate;
- and
- a number of reflectors distributed among said slots such that said reflectors encode a number by both pulse position and phase position.
A method of operating a surface acoustic wave (SAW) identification tag, comprising:
- exciting a SAW transducer located on a piezoelectric substrate to create a SAW;
- causing said SAW to reflect from reflectors distributed among a group of slots arranged by both pulse position and phase position on said substrate;
- and
- demodulating reflected portions of said SAW to yield a number encoded by both pulse position and pulse position.
A method of manufacturing a surface acoustic wave (SAW) identification tag, comprising:
- forming a SAW transducer on a piezoelectric substrate;
- and
- depositing reflectors among a group of slots arranged by both pulse position and phase position on said substrate, said reflectors encoding a number by both pulse position and phase position.
Dependencies are inferred from the claim text.