Hello Volker@Muelhaus,
What layer are your port pins on - are they all on top metal ?
Thank you.
- - - Updated - - -
Hello Volker@Meulhaus,
Here is a copy of my simulation in Momentum.
Wondering if you can comment on it.
I have 3 three pads, two on sides, on top metal via-ed all the way down to ground plane in blue with vias - flattened to speed up simulation.
Middle pad, signal pad, with top metal only.
Middle pad, connect to microstrip transmission line with M9 signal layer and M1 ground, same as blue ground plane.
Ports all on top metal - set up in momentum - signal pad port is positive, two ground pads are negative.
What is wrong - the results are nonsense.
Thank you.