請問PLL的BANDWIDTH為什麼是1/10的reference frequency

tamino

Dear antia66,
4 l% n! z9 [8 |( }% k) o8 R/ h" X, A. qIf damping factor is choosen 2, how about the natural freqency?
& \& W. ~! m7 I* X8 S9 U) bWill the natural freqency changed with damping factor ?
As 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.
0 h; N  `; {* u) eHowever, VCO related noise causes the bandwidth cannot choosed to too high bandwidth.
So, linear model is usually useful.