Patent ID: 7647035

Claim:
A radio frequency (RF) tag transceiver comprises: 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, coupled to receive an inbound RF signal that includes a desired signal component that is received from an RF tag that produces the desired signal component by amplitude modulating the outbound RF signal and that includes an undesired signal component, the RF front-end including a first RF combiner module that attenuates the undesired signal component to produce a desired RF signal; a down conversion module, coupled to the RF front-end, that generates a down converted signal from the desired RF signal based on a receiver local oscillation; a receiver processing module, coupled to the down conversion module, that generates inbound data from the down converted signal; and a frequency control module, coupled to the down conversion module and the RF transmitter, that 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.