DEACTIVATION ELEMENT CONFIGURATION FOR MICROWAVE-MAGNETIC EAS MARKER

摘要

An EAS marker for use in a microwave-GMI article surveillance system include s a length of wire (20) which exhibits a giant magneto-impedance effect, and deactivation elements (24) installed along the length of the wire (20). The deactivation elements (24) exhibit semi-hard ferromagnetic properties and ha ve a triangular profile, or alternatively exhibit acute-angle corners (28) or have edges (30) that cross the wire (20) at acute angles. The deactivation elements can be magnetized to disable the marker.