RF transceiver with undesired signal rejection and methods...

Details RF transceiver with undesired signal rejection and methods... RF transceiver with undesired signal rejection and methods...

2011-03-01

2011-03-01

Yun, Eugene (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S314000, C455S315000

Reexamination Certificate

active

07899429

ABSTRACT:
A radio frequency (RF) transceiver includes an RF transmitter that generates an outbound RF signal at a carrier frequency that is based on a transmitter local oscillation. An RF front-end receives an inbound RF signal that includes a desired signal component that is based on the outbound RF signal and that includes an undesired signal component. The RF front-end includes a first RF combiner module that attenuates the undesired signal component to produce a desired RF signal. A down conversion module generates a down converted signal from the desired RF signal based on a receiver local oscillation. A receiver processing module generates inbound data from the down converted signal. A frequency control module controls a frequency of the transmitter local oscillation and a frequency of the receiver local oscillation, based on an interference rejection signal, to control the attenuation of the undesired signal component.

REFERENCES:
patent: 4799066 (1989-01-01), Deacon
patent: 6061025 (2000-05-01), Jackson
patent: 7142811 (2006-11-01), Terranova
patent: 7248625 (2007-07-01), Chien
patent: 7382791 (2008-06-01), Thermond
patent: 7647035 (2010-01-01), Rofougaran
patent: 2004/0196813 (2004-10-01), Ofek
patent: 2005/0212604 (2005-09-01), Cyr
patent: 2006/0038658 (2006-02-01), Jarvis

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