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Dear antia66,
5 o4 u0 p9 [5 B M" k zIf damping factor is choosen 2, how about the natural freqency? x9 L% ~! A$ p! E- a" b
Will the natural freqency changed with damping factor ?
1 }2 l7 c" Y. Q# [/ b7 vAs my understanding, choose bandwidth <= 1/10*reference freq is for linear model is valid or not, that is, if need widther bandwidth PLL, the parameter from continuous model cannot provide expected PLL behavior.4 W! [2 J' ?, d! t/ Q/ F8 A
However, VCO related noise causes the bandwidth cannot choosed to too high bandwidth.4 B! U% b5 i# L5 y
So, linear model is usually useful. |
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