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Manner, and the sigma - delta modulator system which three sigma - delta modulators the cascade are jointed
Manner, and the sigma - delta modulator system which three sigma - delta modulators the cascade are jointed
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机译:方式,以及将三个sigma-delta调制器级联的sigma-delta调制器系统
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摘要
A method of cascading sigma-delta modulators includes the step of feeding the input to the quantizer of each modulator stage to the subsequent stage. Therefore, the signal which is fed to each of the subsequent stages is the difference between the output and the quantization noise of the previous stage. The method also includes the step of removing the quantization noise of the first two stages, as well as the output of the first two stages, so that the final output of the cascaded modulators is a delayed version of the input, plus a scaled version of the last stage which has been shaped with a fourth-order high pass function. IMAGE IMAGE
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