GROUND WAVE PROPAGATION It propagates from transmitter to receiver by gliding over the surface of the earth in which both antennas are close to the surface of the earth. It follows the curvature of the earth. Earth is assumed to be an ideal conductor ,EM waves cannot penetrate ideal conductor only exist in dielectric medium above conducting surface that’s why ground wave propagation is possible. The Ground waves are traverse in nature. Horizontal polarised antennas are not preferred as the horizontal component of the electric field in contact with the earth is short circuited by the earth