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Dear antia66,
" h, k' C0 a% b; Q0 [) jIf damping factor is choosen 2, how about the natural freqency?5 u8 Z* z" X8 q' q e j$ d" A
Will the natural freqency changed with damping factor ?
0 E" q, Q% E; v/ ]& Q: `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.1 t9 h9 i1 N; _) Q9 m1 X6 q
However, VCO related noise causes the bandwidth cannot choosed to too high bandwidth.- F0 l+ \6 K1 M& [% G. l) W! V
So, linear model is usually useful. |
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