Hi, I am trying to simulate a cap, one port and two ports simulation using FEM in ADS but I got a very different results. Please see the following figures for simulation 1 and and 2. I was wondering if you know which one is accurate and what I am doing wrong here.
Thanks and regards,
Mojtaba
Thanks and regards,
Mojtaba
Obviously, with your small device under test and the much larger ports, you need to be VERY careful with port de-embedding, and the path length for ground return current. So the second example looks bad to me, with return current having to flow all around the simulation box from port 1 to port 2. You would better place one lumped port between the two plates.