Are you looking for the time-averaged Poynting vector? Recall that this is derived from ExH*. As far as I know your approach is otherwise correct for FDTD, but I am not a computational electromagnetics expert.
Are you looking for the time-averaged Poynting vector? Recall that this is derived from ExH*. As far as I know your approach is otherwise correct for FDTD, but I am not a computational electromagnetics expert.
I am looking to calculate the power of the signal in watt at a specific point. Imagine the signal propagating away from a vertical dipole antenna. Because of the symmetry in my layout I can use the 2D FDTD, but how can I determine the power in the signal at some y(vertical) and x(horizontal). I have used
Power in (watt/m^2) = 0.5 * sqrt((Ex*Hz)*(Ex*Hz) + (Ey*Hz)*(Ey*Hz))
but the results look unexpected. I would expect some drop-off proportional to 1/r^2, but do not get this.