Patent ID: 7196648
Filing Date: 2007-03-27
Classification: H03H

Abstract:
1. A non-integer decimation filter for decimating an input value, comprising: a first integrator for integrating the input value in an input sample domain at an input sample rate and for generating a first integral of the input value at an output of the first integrator; a second integrator for integrating the first integral of the input value in the input sample domain at the input sample rate and for generating a second integral at an output of the second integrator; a calculation network coupled to the outputs of said first and second integrators for combining the outputs of said first and second integrals with corresponding coefficients to generate intermediate output values in an output sample domain; and a differentiator configured to receive the intermediate output values from said calculation network and to generate a decimated output value at an output sample rate in which the output sample rate has a non-integer factor with respect to the input sample rate.