2008
DOI: 10.3182/20080706-5-kr-1001.00446
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Robust Filter Design for Sigma-Delta Modulators with One-Bit Quantizer and Analog Mismatch

Abstract: Abstract:A method for improving the signal-to-noise ratio (SNR) of single-stage sigma-delta modulators (SDMs) with one-bit quantizer is presented. It is well known that uncertainties and noises are sources of error which cause performance degradation. Specifically, the modulators are naturally subject to analog mismatch in capacitor values and finite amplifier gain, which are manifested as parametric uncertainties of the SDMs, whereas the quantization error due to the coarse quantizer is modeled as a bounded-p… Show more

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