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.

Abstract: A security tag for use with an electronic article surveillance system comprises a flexible, substantially planar dielectric substrate having first and second sides. A first conductive pattern is positioned on the first side of the substrate, and a second conductive pattern is positioned on the second side of the substrate. The first and second conductive patterns cooperate to establish a resonant circuit, including at least one inductive element and at least one capacitive element having first and second generally separated plates. A static dissipation member, such as a frangible connection member, is provided for electrically connecting together the first and second plates of the at least one capacitive element for preventing the at least one capacitive element from charging and short circuiting to thereby provide electrostatic discharge protection for the security tag.

Abstract: A stabilized resonant tag circuit and deactivator therefore 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, polymeric film adhered to and covering one of the conductors and the substrate. The film provides a vapor barrier which minimizes the effects of body detuning on the circuit and promotes the secured integrity of the tag.