Surface acoustic wave identification tag having enhanced data content and methods of operation and manufacture thereof
First Claim
Patent Images
1. A surface acoustic wave (SAW) identification tag, comprising:
- a piezoelectric substrate having a SAW transducer located thereon;
a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase; and
a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase.
0 Assignments
0 Petitions
Accused Products
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.
-
Citations
37 Claims
-
1. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase wherein said number includes an error detection portion.
-
-
11. 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 reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase; and demodulating reflected portions of said SAW to yield a number encoded simultaneously by both said pulse position and said phase. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. 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 reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase; and demodulating reflected portions of said SAW to yield a number encoded simultaneously by both said pulse position and said phase wherein said number includes an error detection portion.
-
-
21. A method of manufacturing a surface acoustic wave (SAW) identification tag, comprising:
-
forming a SAW transducer on a piezoelectric substrate; and depositing reflectors among reflector locations arranged in a group on said substrate, each of said reflector locations having both a pulse position and a phase, said reflectors simultaneously encoding a number by both pulse position and phase. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
-
-
30. A method of manufacturing a surface acoustic wave (SAW) identification tag, comprising:
-
forming a SAW transducer on a piezoelectric substrate; and depositing reflectors among reflector locations arranged in a group on said substrate, each of said reflector locations having both a pulse position and a phase, said reflectors simultaneously encoding a number by both pulse position and phase wherein said number includes an error detection portion.
-
-
31. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase wherein said phase is defined relative to neighboring reflector locations; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase.
-
-
32. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase wherein non-uniform spacing is utilized for said pulse position; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase.
-
-
33. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase wherein non-uniform spacing is utilized for said phase; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase.
-
-
34. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase wherein non-uniform spacing is utilized for both said pulse position and said phase; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase.
-
-
35. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase wherein a minimum reflector spacing rule is followed when determining the placement of said reflectors distributed among said reflector locations.
-
-
36. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon wherein said SAW transducer has a unidirectional character; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase.
-
-
37. A surface acoustic wave (SAW) identification tag, comprising:
-
a piezoelectric substrate having a SAW transducer located thereon; a group of reflector locations on said substrate, each of said reflector locations arranged by both a pulse position and a phase wherein said phase of reflector locations is implemented using fine grain spatial adjustment of reflector elements by a fraction of a SAW wavelength on the device surface; and a number of reflectors distributed among said reflector locations such that said reflectors encode a number simultaneously by both said pulse position and said phase.
-
Specification