Magnetic core transceiver for electronic article surveillance marker detection

A system for generating an electromagnetic field to interrogate and detect electronic article surveillance markers, comprising:

• a plurality of electronic article surveillance antennas, each of said plurality of antennas including:
• a core formed by a plurality of amorphous alloy ribbons insulated from each other and stacked to form a substantially elongated solid rectangular shape;
• and
• a coil winding of wire disposed around at least a portion of said core, said coil winding of wire insulated from said core, said core and said coil winding being of a minimum size for generation of an electromagnetic field for interrogation and detection of electronic article surveillance markers;
• and,
• at least one electronic controller connected to said plurality of antennas, said electronic controller including:
• transmitter means for generating an electromagnetic field for transmission into an interrogation zone for reception by an electronic article surveillance marker, the electronic article surveillance marker responding with a characteristic response signal;
• receiver means for detecting the characteristic response signal from the electronic article surveillance marker.

A system for generating an electromagnetic field to interrogate and detect electronic article surveillance markers, comprising:

• a plurality of electronic article surveillance antennas, each of said plurality of antennas including:
• a core formed by a plurality of amorphous alloy ribbons insulated from each other and stacked to form a substantially elongated solid rectangular shape;
• and
• a coil winding of wire disposed around at least a portion of said core, said coil winding of wire insulated from said core, said core and said coil winding being of a minimum size for generation of an electromagnetic field for interrogation and detection of electronic article surveillance markers;
• and,
• at least one electronic controller connected to said plurality of antennas, said electronic controller including:
• transmitter means for generating an electromagnetic field for transmission into an interrogation zone for reception by an electronic article surveillance marker, the electronic article surveillance marker responding with a characteristic response signal;
• receiver means for detecting the characteristic response signal from the electronic article surveillance marker;
• and,
• switching means for switching said antenna between said transmitter means and said receiver means.