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Dear antia66,
- c- Q4 _: F3 B6 w/ OIf damping factor is choosen 2, how about the natural freqency?1 X* w6 s0 ]6 E: y, S
Will the natural freqency changed with damping factor ?
5 h9 s# E+ }* ]* WAs 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./ Q* q5 \5 c' A( Y! e$ I
However, VCO related noise causes the bandwidth cannot choosed to too high bandwidth.
( L2 G9 ^( o7 O' e* WSo, linear model is usually useful. |
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發表於 2009-11-16 11:18:05
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