RFID transceiver device

Details RFID transceiver device RFID transceiver device

2005-08-24

2009-02-17

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Transceivers

Reexamination Certificate

active

07492812

ABSTRACT:
An RFID transceiver device is capable of high sensitivity reception, by the reduction of noise, irrespective of the distance to the tag. The RFID transceiver device includes a delay circuit between a local oscillation circuit and a demodulation circuit, wherein the amount of delay of the delay circuit is set to a magnitude corresponding to the path difference between the path of leakage, via a duplexer into the demodulation circuit, of transmission signal output from the local oscillation circuit for transmission, and the path of direct input of the local oscillation signal from the local oscillation circuit to the demodulation circuit.

REFERENCES:
patent: 6229992 (2001-05-01), McGeehan et al.
patent: 6686830 (2004-02-01), Schirtzer
patent: 7330500 (2008-02-01), Kouki
patent: 2002/0072344 (2002-06-01), Souissi
patent: 1-1710-727 (2006-07-01), None
patent: 2-300-318 (1996-10-01), None
patent: 2003-174388 (2003-06-01), None

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