Title | Accurate stability prediction of one-bit higher-order delta-sigma (Δ-Σ) modulators for multiple-sinusoidal inputs |
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Authors | Lota, J., Al-Janabi, M. and Kale, I. |
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Abstract | The present approaches on predicting stability of delta-sigma (Δ-Σ) modulators are mostly confined to DC inputs. This poses limitations as practical applications of Δ-Σ modulators involve a wide range of signals other than DC such as multiple-sinusoidal inputs for speech modelling. In this study, a quasi-linear model for Δ-Σ modulators with non-linear feedback control analysis is presented that accurately predicts stability of single-loop one-bit higher-order Δ-Σ modulators for multiple sinusoids. Theoretical values are shown to match closely with the simulation results. The results of this study would significantly speed up the design and evaluation of higher-order single-loop Δ-Σ modulators with increased dynamic ranges for various applications that require multiple-sinusoidal inputs or any general input composed of a finite number of sinusoidal components. |
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Journal | IET Circuits, Devices & Systems |
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Journal citation | 6 (2), pp. 71-78 |
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ISSN | 1751-858X |
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Year | Mar 2012 |
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Publisher | Institution of Engineering and Technology (IET) |
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Digital Object Identifier (DOI) | https://doi.org/10.1049/iet-cds.2011.0194 |
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Publication dates |
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Published | Mar 2012 |
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