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Behavioral modeling of Sigma Delta + Divider (Read 2497 times)
KMB
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Behavioral modeling of Sigma Delta + Divider
Jul 24th, 2012, 10:11am
 
Hello all,
I am currently modeling a Sigma delta MASH mod in matlab. I have managed to simulate it and get the Quantization noise PSD (which is just the periodogramme of the output of the Sigma Delta). Now I want to simulate how this noise will translate at the output of the divider.. For this I tried to Map the Sigma delta output to a frequency (fvco/(N+dN)) which is straightforward. Now, if I convert this frequency to a signal (say sine or square), I will get the power spectra at only those particular frequencies that the divider outputs. How do I recover the Sigma delta noise spectrum at the divider output i.e. from the divider output spectrum?

Any help would be appreciated..

Thanks,
KMB
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wandola
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Re: Behavioral modeling of Sigma Delta + Divider
Reply #1 - Nov 15th, 2015, 5:27pm
 
can u post ur matlab code about dsm here?
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