I have a doubt: when it comes to simulating an antenna with wires only, with a given radius, how do I define ultimately if the simulation is precise? I ask this because, for instance, changing the mesh size changes the results of the simulation by a few Ohms in impedance, and as it gets finer and finer, I don't see convergence in my analysis.
For example, I've used the fine meshing setting for different maximum frequencies in my simulations, as shown below, as increasing the maximum frequency will change the number and the length of the segments in which the wires in the simulation are divided. But as you can see on the second image, where I take the 3GHz maximum frequency as the reference and compare all other maximum frequencies with it, there appears to be no convergence. Is the solver misbehaving when using smaller and smaller elements?
