The current distribution on a center-fed short dipole (length l n ë) centered at the coordinate origin and lying along the z-axis can be written as
where Io defines the peak value of the current at the feed point of the antenna. Show that the magnetic vector potential of the center-fed short dipole is related to the magnetic vector potential of the Hertzian dipole by given equal antenna lengths and assuming the value of Io is equal on the two antennas.