Communications: radio wave antennas – Antennas – With support for antenna – reflector or director
Reexamination Certificate
2005-10-18
2005-10-18
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
With support for antenna, reflector or director
C343S895000, C340S572400
Reexamination Certificate
active
06956538
ABSTRACT:
A method and apparatus for tracking items automatically is described. A passive RFID (Radio Frequency IDentification) tag is used with a material tracking system capable of real-time pinpoint location and identification of thousands of items in production and storage areas. Passive RFID tags are attached to the item to be tracked, remote sensing antennas are placed at each remote location to be monitored, interrogators with several antenna inputs are connected to the sensing antennas to multiplex the antenna signals, and a host computer communicates with the interrogators to determine item locations to an exacting measure.
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Chen Shih-Chao
Micro)n Technology, Inc.
Schwegman Lundberg Woessner & Kluth P.A.
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