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The new design of sigma-delta modulator with lower bits and its application

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3 Author(s)
Yu Hui-min ; Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China ; Liu Yuan-yuan ; Wang Zhe

This paper is devoted to the discussion of a new kind of sigma-delta modulator as signal expression, by which the higher-bit input signal can be represented as a lower-bit digital signal. The quantized noise shaping and noise frequency spectrum are discussed and compared with the conventional sigma-delta modulator. The theoretic analysis shows that the new modulator is stable. A kind of DDC based on this modulator is designed and simulated.

Published in:

Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on  (Volume:1 )

Date of Conference:

14-17 Dec. 2003