时钟谐波

hongpw

一个中频采集板，时钟是62M，客户对1.24G和1.302G两个频点的干扰很敏感，在板子调试的过程中，发现地上总是有很大的干扰（1.24G有-69dB，而在1.302G上有-80dBm左右

cllif

在时钟输出端加滤波器抑制

zhenli888

求好的解决方案

niklas

really depends on what kind of coupling you get? Capacitor or Magnetic or even they share the same ground?

Capacitor is easy, add shielding,
Magnetic, probably you have a big current loop which mutually coupling to another loop, then you need to reduce loop area,
same ground: either separate or at least Kelvin connection