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Design >> RF Design >> Modern NTF of DSM-Frac-N PLL Synthesizer
https://designers-guide.org/forum/YaBB.pl?num=1405250334

Message started by cheap_salary on Jul 13^th, 2014, 4:18am

Title: Modern NTF of DSM-Frac-N PLL Synthesizer
Post by cheap_salary on Jul 13^th, 2014, 4:18am

In classical Delta-Sigma-Modulation-Fractional-N PLL synthesizer, NTF is following.
NTF=(1-z^-1)^order, all zeros is located at freq=0.
And this NTF is realized by MASH structure.

What NTF is realized in Modern NTF of DSM-Frac-N PLL Synthesizer ?