Patent ID: 7602862
Filing Date: 2009-10-13
Classification: H03D

Abstract:
1. A mixing module for mixing an analog input signal with an oscillation, comprising: a plurality of switched sample modules operably coupled to the analog input signal for generating a corresponding plurality of samples of the analog input signal in response to a control signal, wherein the plurality of samples of the analog input signal include a first plurality of in-phase samples and a second plurality of quadrature phase samples and wherein at least one of the plurality of switched sample modules includes a switched capacitor circuit; and a control module operably coupled to a sampling clock, for generating a mixing sequence and generating a control signal based on the mixing sequence, the control signal including a sequence of sample positions and a sequence of scale factors, the sequence of scale factors having a period that is based on a period of the oscillation; wherein the sampling clock has a sample period and wherein the sequence of sample positions repeats at a sample position period greater than a sample interval, the sample interval equal to the sample period times the number of the plurality of switched sample circuits.