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This paper introduces a novel selection criterion to choose between transposed and direct form filters for power efficient FIR polyphase decimators. Less than 5% tolerance between calculated power consumption using the proposed criterion and simulated results is observed. A combined architecture of transposed and direct form filters for power efficient FIR polyphase decimators is proposed. A decimator...
A novel method for approximating filter coefficients to signed-power-of-two terms is proposed yielding a significant reduction in complexity and power consumption. A Matlab toolbox named MSD-Toolbox (multi-stage decimation) was developed to design and optimize multi-stage decimation filters. The proposed design methodology was used to design an example decimation filter, which was synthesized in 0...
This paper presents the implementation and power analysis of an efficient decimator architecture for cascaded sigma-delta (SigmaDelta) modulators. The recombination logic for cascaded modulators in general and a gain error correction for continuous time (CT) modulators are integrated into the first decimation stage. An appropriate filter topology is derived and synthesized in a 0.18 mum CMOS technology...
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