Module with RFID tag and associated bridge antenna

Details Module with RFID tag and associated bridge antenna Module with RFID tag and associated bridge antenna

2006-03-23

2008-10-07

Bugg, George A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572100, C340S572800, C340S571000, C340S568100, C340S010100, C235S385000, C235S386000, C235S492000

Reexamination Certificate

active

07432817

ABSTRACT:
An RFID bridge antenna is positioned between a tag antenna associated with a tag and a reader antenna associated with a reader. The bridge includes at least two RF antenna elements spaced apart from one another and coupled together by an electrical conductor. The first RF antenna element is located proximate to the tag antenna and the second RF antenna element is located proximate to the reader antenna. An electromagnetic carrier signal transmitted by the reader antenna is received by one of the RF antenna element and retransmitted to the tag antenna by the other RF antenna element, increasing the distance over which the tag can communicate with the reader. Where the tag is attached to a packaged object, the RFID bridge antenna may be included in the package to allow wireless data communication between the tag and a reader. The reader may also be located external to the package. For example, one of the RF antenna elements may be attached to a label on the package, allowing data stored in the tag to be extracted by the external reader. The object may be a module, also known as a customer replaceable unit (CRU), and the tag may be configured as a customer replaceable unit monitor (CRUM). The module may take the form of a container having a closure cap equipped with a tag and the container may be stored in a cabinet along with an RFID bridge antenna mounted on the cabinet door to establish data communication between the tag and a reader.

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