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PFD/CP noise curve, current noise go up with frequency

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nichocheng

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Hi ,all.
when I simulate my PFD/CP current noise with spectreRF, I found there is some wrong that the curve of current noise go up with frequency. so, anyone can help me? Thanks.
my simulation setup like :
 

Re: PFD/CP noise curve

Make sure that the reference sideband is 1.
You have to check that the peaking is not due to the next reference band at fref.
 

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