I am trying to run a simulation to check how the presence of a screw close to an ISM 868MHz 3D wire antenna affects its performance. I want to determine if the screw causes any kind of resonance at higher frequencies, spur emissions, and so on. I was thinking of making a simulation with a single frequency as an excitation signal and using a probe at a certain distance to evaluate over a wide band. Is this possible? How could I do it? Any other recommendations for this problem?
