Receiver architecture for canceling blocking signals

Details Receiver architecture for canceling blocking signals Receiver architecture for canceling blocking signals

2006-07-07

2008-12-30

La, Anh V (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572400, C340S010100, C455S307000

Reexamination Certificate

active

07471204

ABSTRACT:
A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.

REFERENCES:
patent: 6294953 (2001-09-01), Steeves
patent: 7068171 (2006-06-01), Gardenfors et al.
patent: 7199713 (2007-04-01), Barink et al.

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