Wide exit/entrance electronic article surveillance antenna...

Details Wide exit/entrance electronic article surveillance antenna... Wide exit/entrance electronic article surveillance antenna...

2006-02-21

2010-12-28

Nguyen, Tai T (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572400, C340S572700, C340S572800, C235S435000, C235S439000, C235S449000, C235S450000, C343S741000, C343S742000, C343S787000, C343S788000

Reexamination Certificate

active

07859407

ABSTRACT:
An electronic article surveillance antenna system with wide interrogation zones has a number of core transceiver antennas with each connectable to a transmitter. The core transceiver antennas are adapted to be installed adjacent a ceiling of the wide interrogation zone and generate an interrogation signal into the wide interrogation zone. The core transceiver antennas each are connectable to a receiver to receive and detect a response signal from an electronic surveillance marker disposed in the wide interrogation zone. The system also has transceiver antenna coils with each connectable to the transmitter and adapted to be installed adjacent a floor of the wide interrogation zone. The transceiver antenna coils generate the interrogation signal into the wide interrogation zone and each is also connectable to the receiver to receive and detect the response signal from the electronic surveillance marker disposed in the wide interrogation zone.

REFERENCES:
patent: 5459451 (1995-10-01), Crossfield et al.
patent: 6396455 (2002-05-01), Ely et al.
patent: 7091858 (2006-08-01), Copeland et al.

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