有关RFVCO

darknight

一直以来，对GSM手机中Transmitter的发射部分存在疑问，看看结构，应该是个锁想环用作调制器，有专门用于发射RFVCO，哪位大大有这方面的资料，可以共享吗？

think3s

你说的就是目前比较流行的OPLL(Offset PLL)调制方式，google一下吧。[br]<p align=right><font color=red>+3 RD币</font></p>

l87522

有的VCO带调制功能的，有PLL芯片无关。

wilsonchen

<P>Hi, </P><P>Instead of detailed review of RFVCO. Maybe you should correlate</P><P>what you can do from your system RF specification or issues to your RFVCO</P><P>parameters adjustable from RF platform.</P><P>RFVCO is quite kernel and spurious concerned. You have to put optimal loop parameters and clean layout to optimize that performance. </P><P>wilson</P>[br]<p align=right><font color=red>+3 RD币</font></p>