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Dear all :( ~ @ ]/ X* \5 a2 y( I
In fsk close loop direct Frequency modulation ,
4 D7 i. N8 b& @3 s# Y/ `1 [9 x 1. data rate is higher than loop BW or lower than loop BW ?; z. a8 Q7 p" g5 w
2. And what's the relation between data rate and Loop BW ?" k; y6 O, z( P5 h, K
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Because modulation from VCO , it's a high pass function for VCO vs PLL.1 N" f) G) u5 M: z! O9 D
If modulation frequency > BW , it will be supress by VCO vs PLL transfer function.' [% f6 @7 f( c8 Y% @/ A7 x
It will be trace and fix it. So modulation function is fail.7 l2 M* M; x' F& z0 x6 z3 ]
Is this concept is right ?4 c6 j" ?/ l7 G! T( n+ x% x
! E, v$ Z9 S4 ~: y. i Thanks . |
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