Stabilized resonant tag circuit
First Claim
1. A resonant tag circuit for use as an electronic article surveillance tag, comprising:
- a flexible substantially planar dielectric substrate having a first side and a second side;
a first conductor positioned on said first side of said dielectric substrate;
a second conductor positioned on said second side of said dielectric substrate, wherein at least one of said conductors comprises an inductor; and
a flexible, substantially planar, tear resistant, substantially vapor impermeable polymeric film adhered to and covering each of said conductors and said substrate on the side of each conductor opposite to the side which is positioned on said dielectric substrate, said film providing a substantially impermeable vapor barrier for each of said conductors and said substrate, whereby effects of body and article detuning on said circuit are minimized, and the secured integrity of said tag is promoted while maintaining the flexibility thereof.
5 Assignments
0 Petitions
Accused Products
Abstract
The present invention is a stabilized resonant tag circuit for use as an electronic article surveillance tag. The tag has a flexible substantially planar dielectric substrate having conductors positioned on either side, at least one of the conductors including an inductor. The tag is stabilized by a flexible, substantially planar, tear-resistant, substantially vapor impermeable polymeric film adhered to and covering each of the conductors and the substrate. The film provides a vapor barrier which minimizes the effects of body and article detuning on the circuit and promotes the secured integrity of the tag. The tag circuit may include an indented portion in at least one of the conductors which permits the tag to be deactivated in response to an electromagnetic field of sufficient energy to destroy the resonant properties of the circuit.
76 Citations
13 Claims
-
1. A resonant tag circuit for use as an electronic article surveillance tag, comprising:
-
a flexible substantially planar dielectric substrate having a first side and a second side; a first conductor positioned on said first side of said dielectric substrate; a second conductor positioned on said second side of said dielectric substrate, wherein at least one of said conductors comprises an inductor; and a flexible, substantially planar, tear resistant, substantially vapor impermeable polymeric film adhered to and covering each of said conductors and said substrate on the side of each conductor opposite to the side which is positioned on said dielectric substrate, said film providing a substantially impermeable vapor barrier for each of said conductors and said substrate, whereby effects of body and article detuning on said circuit are minimized, and the secured integrity of said tag is promoted while maintaining the flexibility thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification