Patent ID: 7697914

Claim:
A radio receiver front-end comprises: a first radio frequency (RF) receiver section coupled to receive an inbound RF signal and to provide a first representation of the inbound RF signal, wherein the inbound RF signal includes a desired signal component and an undesired signal component, wherein the first RF receiver section includes a first transconductance low noise amplifier coupled to amplify the inbound RF signal to produce a first amplified current RF signal; a second RF receiver section coupled to receive the inbound RF signal and to provide a second representation of the inbound RF signal, the second RF receiver section includes: a second transconductance low noise amplifier coupled to amplify the inbound RF signal to produce a second amplified current RF signal; and a notch filter module coupled to notch filter the second amplified current RF signal to produce a notch filtered current RF signal, wherein the notch filtered current RF signal includes an attenuated desired signal component and a substantially unattenuated undesired signal component; and RF combining module coupled to the first RF receiver section and the second RF receiver section, the RF combining module includes: a first current to voltage conversion module coupled to convert the first amplified current RF signal into an amplified voltage RF signal; a second current to voltage conversion module coupled to convert the notch filtered current RF signal into a notch filtered voltage RF signal; and a subtraction module coupled to subtract the notch filtered voltage RF signal from the amplified voltage RF signal to produce a desired RF signal, in which the desired RF signal includes the desired signal component and an attenuated representation of the undesired signal component.