State scaling of continuous-time sigma-delta modulators

In this paper, the common method of scaling the feedback coefficients of continuous time sigma delta modulators in order to stabilize the system is enhanced. The presented approach scales the different states of the system instead of the coefficients. The new corresponding coefficients are then calc...

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Main Authors: C. Zorn, T. Brückner, M. Ortmanns, W. Mathis
Format: Article
Language:deu
Published: Copernicus Publications 2013-07-01
Series:Advances in Radio Science
Online Access:http://www.adv-radio-sci.net/11/119/2013/ars-11-119-2013.pdf
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author C. Zorn
T. Brückner
M. Ortmanns
W. Mathis
author_facet C. Zorn
T. Brückner
M. Ortmanns
W. Mathis
author_sort C. Zorn
collection DOAJ
description In this paper, the common method of scaling the feedback coefficients of continuous time sigma delta modulators in order to stabilize the system is enhanced. The presented approach scales the different states of the system instead of the coefficients. The new corresponding coefficients are then calculated from the solution of the state space description. Therewith, it is possible to tune the maximum out-of-band gain directly in continuous time. In addition, the input amplitude distribution between each quantization level of multi bit sigma-delta modulator can be adapted.
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spelling doaj.art-0d361908da4d4529a3563a1aa4cac9242022-12-21T23:15:28ZdeuCopernicus PublicationsAdvances in Radio Science1684-99651684-99732013-07-011111912310.5194/ars-11-119-2013State scaling of continuous-time sigma-delta modulatorsC. Zorn0T. Brückner1M. Ortmanns2W. Mathis3Institute of Theoretical Electrical Engineering, Leibniz University of Hannover, GermanyInstitute of Microelectronics, Ulm University, GermanyInstitute of Microelectronics, Ulm University, GermanyInstitute of Theoretical Electrical Engineering, Leibniz University of Hannover, GermanyIn this paper, the common method of scaling the feedback coefficients of continuous time sigma delta modulators in order to stabilize the system is enhanced. The presented approach scales the different states of the system instead of the coefficients. The new corresponding coefficients are then calculated from the solution of the state space description. Therewith, it is possible to tune the maximum out-of-band gain directly in continuous time. In addition, the input amplitude distribution between each quantization level of multi bit sigma-delta modulator can be adapted.http://www.adv-radio-sci.net/11/119/2013/ars-11-119-2013.pdf
spellingShingle C. Zorn
T. Brückner
M. Ortmanns
W. Mathis
State scaling of continuous-time sigma-delta modulators
Advances in Radio Science
title State scaling of continuous-time sigma-delta modulators
title_full State scaling of continuous-time sigma-delta modulators
title_fullStr State scaling of continuous-time sigma-delta modulators
title_full_unstemmed State scaling of continuous-time sigma-delta modulators
title_short State scaling of continuous-time sigma-delta modulators
title_sort state scaling of continuous time sigma delta modulators
url http://www.adv-radio-sci.net/11/119/2013/ars-11-119-2013.pdf
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AT tbruckner statescalingofcontinuoustimesigmadeltamodulators
AT mortmanns statescalingofcontinuoustimesigmadeltamodulators
AT wmathis statescalingofcontinuoustimesigmadeltamodulators