[SI-LIST] 2 layers PCB with no Plane(gnd or Power)

  • From: Mohamad Haghtalab <mohaghtalab@xxxxxxxxx>
  • To: si-list@xxxxxxxxxxxxx
  • Date: Sun, 3 Aug 2008 14:50:27 -0700 (PDT)

Hi all
 
How can we analyse(simulate) PCBs (transmission line effect ,calculatig 
Z0(SI/EMI issues)...) with 2 routing layers and between them(signal 
tracks)ground Islands(cupper fills...),what's the ground associate with each 
signal track,how can we predict where the return current of each signal will 
flow?
 
Thanks for helping 
 

      
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