i have a Layout with EM and i want to generate it to EM symbol and connect Lump resistors (pi attenuator) so i don't .
.know how to define my port because i have GND planes(2 layers) in the layout and the pi attenuator at the TOP layer
???how i need to define my port differential or with global GND
it's ok if I define the P7 positive and P8 negative and P9 positive and P10 negative and P11 positive and P12 negative.
Port1: P1 positive terminal, P2 and P3 negative terminals
Port2: P4 positive terminal, P5, P6 negative terminals.
in this illustrate i didn't use with global GND symbol and all the ports are diffirentials
Note: the blue points they Vias ,connect the top GND and the layer 2 and layer 3 GND and they are defined in the substrate like this
(in addition, the question is if the layers 2 and 3 need to be defined as a slot plane or like this(strip plane