I am working with ADS 2016.01 and I have a multilayer microstrip patch antenna, which I need to connect to the output of a filter. Everything seems to work well when I do some tests in the schematic tool working with equivalent circuits.
Now, I have designed my antenna and I want to replace its equivalent circuit for a component that imports the behaviour from the antenna simulations, before joining filter+antenna in the layout, I want to check everything is OK with my equivalent circuit by joning the filter circuit parameters with the layout design of my antenna, which is already simulated and seems to work as I want.
I have been able to do this correctly when I am working with single layer designs, but it doesn't seem to work with multilayer antennas for me (everything is reflected in the |S11| graph, which does not make sense). Is there any way to do this appropriately? Do I need to tell to ADS, somehow, the substrate structure that I am working with?
I will be thankful for any help you can provide to me. Thanks in advance.
Nacho