Mobile RFID reader and method of eliminating a transmission...

Details Mobile RFID reader and method of eliminating a transmission... Mobile RFID reader and method of eliminating a transmission...

2007-04-30

2011-12-20

Nguyen, Nam V (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S010300, C340S010400, C340S010500, C340S572100, C340S572400

Reexamination Certificate

active

08081061

ABSTRACT:
A mobile radio-frequency identification (RFID) reader includes a high-frequency front-end unit including an antenna, a circulator, an output amplifier, and a signal processor chip. The signal processor chip includes a high-frequency transceiver, a pseudo-leakage signal generator configured to generate a pseudo-leakage signal based on a transmission high-frequency signal, the transmission high-frequency signal being provided from the high-frequency transceiver and being provided to the high-frequency front-end unit and a subtractor configured to subtract the pseudo-leakage signal from a received high-frequency signal to generate a subtracted signal, the pseudo-leakage signal corresponding to a transmission leakage signal included in the received high-frequency signal, the received high-frequency signal being provided from the high-frequency front-end unit, and the subtracted signal being provided to the high-frequency transceiver. Therefore, the RFID reader may eliminate a transmission leakage signal.

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