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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | deu |
| Published: |
Copernicus Publications
2013-07-01
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| Series: | Advances in Radio Science |
| Online Access: | http://www.adv-radio-sci.net/11/119/2013/ars-11-119-2013.pdf |
| Summary: | 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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| ISSN: | 1684-9965 1684-9973 |