Hilbertstrauss
Newbie level 5
I simulated a transmission line in cst (ver.2017). I used no loss tangent nor lossy metals (just PEC and perfect dielectrics). I ran a simulation over 1G to 5G using the frequency domain solver. I got the following s-parameters
I checked these results with other simulators (ADS) and they are pretty close. Now, using the time domain solver I get
These results are way off compared to the frequency-solver ones (especially S11). I tried increasing the meshing (from ~4000 cells to ~11000 cells) for the time domain solver but the results didn't change by much. Everything is identical for both solvers (same boundary conditions, same stack up, same frequency range...). I'm really at lost. Any recommendations?
(PS. The results of the simulation are included in the 2 project files)
I checked these results with other simulators (ADS) and they are pretty close. Now, using the time domain solver I get
These results are way off compared to the frequency-solver ones (especially S11). I tried increasing the meshing (from ~4000 cells to ~11000 cells) for the time domain solver but the results didn't change by much. Everything is identical for both solvers (same boundary conditions, same stack up, same frequency range...). I'm really at lost. Any recommendations?
(PS. The results of the simulation are included in the 2 project files)