a technique includes providing a plurality of local oscillator signals such that each of the local oscillator signals has a different phase . the technique includes providing scaling units to scale the input signal pursuant to different scaling factors to generate scaled input signals . the scaling factors are selected on a periodic function of the phases . the technique also includes providing mixing circuits to mix the local oscillator signals with the scaled input signals to generate mixed signals and providing an adder to combine the mixed signals to generate an output signal .