In one embodiment, an apparatus includes mixer stages each coupled to receive a radio frequency (RF) signal from a corresponding tracking filter each configured for a band of frequencies. Each mixer stage is controllable to mix the RF signal with a divided master clock signal to obtain N multi-phase intermediate frequency (IF) signals, where N is programmable based upon a desired channel frequency. A load network having individual loads to be shared by the mixers can be coupled to the mixer stages, and a shared IF combiner may be coupled to the load network to weight and combine outputs of the load network to obtain a quadrature IF signal. The load network can include multiple loads each to be individually controlled to receive one of the multi-phase IF signals.