Short-range microwave identification system

Details Short-range microwave identification system Short-range microwave identification system

G - Physics

01

S

G01S 13/74 (2006.01) G06K 7/00 (2006.01) G06K 19/07 (2006.01)

Patent

CA 2142498

In a system of short-range microwave identification by data exchange according to a determined protocol between at least one reader and at least one active label, the label comprises an activation circuitry comprising means enabling the activation of a writing circuitry and a transmission circuitry of the label when a determined sequence of the exchange protocol transmitted by a reader within radioelectrical range is detected, the transmission circuitry of the label comprising means that generate a phase-modulated transmission signal whose frequency is stabilized irrespectively of the mismatching presented to the transmission/reception antenna of the label.

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