You are right. I should try to describe it.
I have a plane wave, z-polarized, illuminating a thin PEC wire along z-direction.
I am doing a frequency sweep in such a way that the wavelength corresponding to central frequency is twice the length of the wire. So at that frequency we should see...
So I have this PEC cylinder that I am illuminating with a plane wave. As we know it should resonate when lambda is twice the length of the cylinder.
My adviser suggested to examine the phase of surface current, but I do not understand how it is relevant. Maybe I didn't get it right...