DEACTIVATABLE RADIO FREQUENCY SECURITY LABEL

摘要

A deactivation apparatus for an electronic article surveillance tag having a plurality of layers and an equivalent resonant circuit containing an inducto r and a capacitor is provided. The apparatus includes: a capacitor formed by a pair of conductive capacitor plates separated apart by a dielectric layer; a n inductor connected to each of the pair of capacitor plates where an electromagnetic field of a preselected frequency at a first magnitude impinging upon the tag causes the equivalent resonant circuit to resonate an d produce a detectable response from the tag; and, an electrically weakened ar ea in the dielectric layer between the pair of conductive capacitor plates wher e the electromagnetic field at a second magnitude higher than the first magnitude impinging upon the tag causes a conductive path through the weaken ed area electrically connecting the pair of capacitor plates together and deactivating the tag.