RF identification tag configurations and assemblies

Details RF identification tag configurations and assemblies RF identification tag configurations and assemblies

1993-04-21

1997-02-18

Hofsass, Jeffery

Communications: electrical

Condition responsive indicating system

Specific condition

340503, 34082521, 34082534, 34082554, G08B 1314

Patent

active

056044852

ABSTRACT:
An RF tag (10) includes a plurality of RF resonant circuits (14, 18, 22) which are disposed in a three-dimensional array within a body (30) of solid material. Selected ones of the RF resonant circuits are coated with a conductive ink (36) for programming the RF tag. Non-planar RF resonant circuits (40, 50) provide enhanced directivity. The RF resonant circuits (14, 40, 50) are disposed within an elongated body (72, 82, 94) in spaced apart and substantially axially aligned relation to provide elongated RF tag configurations. An RF tag assembly (110) includes attachment mechanisms (116, 118) for attaching an RF tag (128) to a carrier. A dual mode RF tag assembly (140) is also provided which includes a passive RF circuit (144) and an active RF circuit (142).

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