Patent ID: 7881405

Claim:
A system implemented method, comprising: receiving an input signal and forming a stream of digital samples of the input signal by sampling at a sampling frequency; mixing, using a single mixer, the stream of digital samples using a mixer sequence having a sine sequence and a cosine sequence based on the sampling frequency to generate an input sequence, the mixing including receiving the sine sequence and the cosine sequence at the single mixer, each of the sine sequence and the cosine sequence including a plurality of components in an arrangement such that at least one of the components has a zero value and the remaining components has a non-zero value, and the mixing including combining the sine sequence and the cosine sequence such that the mixer sequence comprises (1, 1) or (−1, −1); and filtering the input sequence using a plurality of polyphase filter parts, each corresponding to the non-zero components of the sine sequence and the cosine sequence, and selectively combining the outputs of the polyphase filter parts to generate an in-phase sequence and a quadrature sequence.