@anddab thank you for your answer. Indeed the TDS with adaptive meshing is faster than the integral equation solver, but the point is that i want to compare the MoM method (solved in the frequency domain) with a frequency model i developped for transmission lines.
Now i am using the integral equation solver, it's difficult to get good results. We have to pay attention to the meshing features :
- With 5 cells per wavelength, i could get good results in reasonable calculation time.
- With 10 cells per wavelength, i couldn't get good results, sometimes the solver stop the calculation displaying this message (could not solve equation system).
By the way, all the boundaries are open space.
Kindly,