RFID tag with tunable antenna and associated reader

Details RFID tag with tunable antenna and associated reader RFID tag with tunable antenna and associated reader

2008-03-04

2008-03-04

Bugg, George (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C235S375000, C343S7000MS

Reexamination Certificate

active

11001169

ABSTRACT:
In one exemplary embodiment of the present invention a RFID tag for use in environments that cause antenna detuning is disclosed. The RFID tag comprises an antenna configured to receive radio frequency signals and an adjustable impedance adder coupled to the antenna. The impedance adder is configured to provide a needed amount of impedance to the antenna to compensate for detuning.

REFERENCES:
patent: 6806812 (2004-10-01), Cathey
patent: 7123129 (2006-10-01), Schrott et al.
patent: 2003/0214419 (2003-11-01), Reindl
patent: 2006/0286938 (2006-12-01), Murdoch

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