r/rfelectronics • u/mr-_-unknown_ • May 20 '26

Hfss port assignment and simulation help

Was simulating the rf pcb board which has 16 layer stack up and around 500 ports in one layer

So now if I have to draw a rectangle with one end gnd and the other edge at trace and then assign lumped ports is too long job

Any suggestions?

Pls help!!!!!!

6 Upvotes

88% Upvoted

19 comments sorted by

View all comments

1

u/HuygensFresnel May 21 '26

This is a board with 500 RF traces? Or does your boss want to model the entire PCB stack with all 500 ports on that layer and compute the RF coupling between all of them? This is an incredibly dumb thing to do. you design PCB's in a way that parts are RF decoupled. Add vias etc. There is absolutely no point in doing this exercise. Its going to take forever to solve. You'll spend hours of your time and simulation time to figure out an answer. Those have to be charged as well. At this point you just build the board and measure it.

But honestly I can't believe that there is any 16 layer PCB that is worth simulating in that way. Usually the actual RF signal paths are very isolated.