Remote-readable identification tag and method for operating...

Details Remote-readable identification tag and method for operating... Remote-readable identification tag and method for operating...

2006-08-08

2006-08-08

Nguyen, Tai T. (Department: 2632)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572200, C340S010200, C340S010400, C343S702000, C343S742000, C343S850000, C343S867000

Reexamination Certificate

active

07088245

ABSTRACT:
A remote-readable identification tag (T) that is provided with at least two resonance circuits (81 . . . 8n) and at least one transmitter/receiver antenna system (1) coupled with the circuits. The at least two circuits have a respectively different resonant frequency. A delay device (6) of the remote-readable identification tag delays a signal response between a signal received by the antenna system and a signal emitted in response by the antenna system, e.g., by delaying feeding the received signal into the resonance circuits.

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Klaus Finkenzeller “Vorwort” RFID-Handbook, pp. 28-29, Hanser Verlag Wien, 1998, Munich, Germany.

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