raja.cedt
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hello, When you can predict phase noise why can't for reference spur? Mainly Cp mismatch, filter oder and Kvco will impact reference spurs (when you have clean supply for CP it's okay to think about only reference spurs but when you have some ripple upon the supply you get some supply spurs), So please check mismatch in CP, roughly calculate and run loop simulation. better use ideal divider and if posb use ideal vco so that you can estimate fastly.
Thanks, raj.
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