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Layout EM co-simulation
Hello, I am a newbie to ADS and I hope someone could help me with this. For a part of a project, I have to design a layout for LNA on PCB. I have the recommended layout of the component and an S parameter file, but before fabricating it I would like to co-simulate it. I have looked at few examples of cosimulation, but I couldn't get the hold of the solution I need.
I have attached the datasheet and the layout of the components. I initially thought to design the layout and use the s2p model for cicuit EM cosimulation, but if you can please look into that, you can see that the layout obviously contains a V supply line, and I have included that in layout. However I do not know how to mention that in simulation.Since it has a fixed supply voltage, do I need to describe that as a port ? I am confused at that part. Hope some one can guide me through this.
Thanks in advance.
附图/附件
layout.PNG
You mentioned S2P. If your simulation is linear using S-parameters, you can ignore the supply line (leave it unconnected) to keep things simple.
Thank you for your response volker.In that case, if you connect the cond strip to the corresponding pad on the LNAas mentioned in the layout, would the EM simulation take the effect of that supply line ? Or wouldn't it matter much ?
I am alsodefining ground in the top layer and connect it to the bottom ground plane using vias. Would I need to assign ports on the top ground layer as well ?
Layout is layout, but in the end you need to connect it to the device. If your circuit model is only 2-port, we don't have interaction between DC input and RF path inside the device. In this case, in my opinion it doesn't make much sense to include the bias line in EM if you don't know how to connect/terminate it on the device side.
Great. Thanks for your time and guidance Volker.
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