Patent ID: 7899428
Filing Date: 2011-03-01
Classification: H04B

Abstract:
1. An apparatus comprising: a first transconductance amplifier of a first radio receiver section to amplify an inbound radio signal and produce a first amplified current signal that includes a desired signal component and an undesired signal component; a second transconductance amplifier of a second radio receiver section to amplify the inbound radio signal and produce a second amplified current signal that includes the desired signal component and the undesired signal component; a notch filter component coupled to receive the second amplified current signal to filter and attenuate frequencies about the desired signal component of the second amplified current signal to produce a filtered second amplified current signal; and a combining module coupled to receive the first amplified current signal and the filtered second amplified current signal, convert the first amplified current signal and the filtered second amplified current signal respectively to a first voltage signal and a filtered second voltage signal and to combine the first voltage signal and the filtered second voltage signal to subtract the filtered second voltage signal from the first voltage signal to recover the desired signal component from the first voltage signal.