RFID reader architecture

Details RFID reader architecture RFID reader architecture

2006-03-16

2010-02-16

Maung, Nay A (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Near field

C455S041200, C455S552100, C455S553100, C340S010100, C340S010200, C375S295000, C375S316000

Reexamination Certificate

active

07664461

ABSTRACT:
A highly integrated and low-cost reader for a radio frequency identification (RFID) system is realized by providing a transmitter operable to generate an outbound radio frequency (RF) signal and a receiver operable to receive an inbound RF signal having a frequency similar to a frequency of the outbound RF signal on a single integrated circuit. Since the inbound RF signal may include not only a modulated RF signal produced by an RFID tag responsive to the outbound RF signal, but also a blocking signal corresponding to the outbound RF signal, the receiver additionally includes a block cancellation module operable to substantially cancel the blocking signal from the inbound RF signal using the outbound RF signal and to substantially pass the modulated RF signal before down-conversion of the modulated RF signal.

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EP Search Report dated Sep. 19, 2008.

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