Question 3 (7 pt): An infinitesimal horizontal electric dipole of length 1 with a constant electric current Io is placed parallel to the y-axis at the height of N2 above an infinite perfect electric ground plane. a) Find the E and H-field radiated by the dipole, then sketch its radiation pattern on E and H-plane. b) Find the angles of all the nulls of the total field. c) Find the radiation resistance Rc, maximum directivity Do and the effective aperture Aeff of the dipole