Nyquist rate converters have traditionally been used for low to moderate resolution data acquisition applications. In this paper, we describe a feedforward residue compensation (FRC) technique to extend the resolution of such converters using an oversampling modulator loop. Closed-form analytical expressions are developed to provide insight into the operation and limits on the resolution of such converters. Simulation results are used to verify the operation and confirm the limitations of this technique.
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Harjani et al. (1998) studied this question.
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