Next
Previous

The effect of poor ground conductivity is taken care of by installing a ground screen consisting of radial wires extending outward from the antenna base for a distance of . Such an arrangement is shown in Fig 7.10.

radial wires of length buried below grounded surface
Fig 7.10: Grounded scree for improving performance of monopole antennas operating near earth surface.
Fundamentals of Antennas and Radiating systems

Quarter wave monopole antennas are often used as vehicle mounted antennas, the vehicle providing required ground plane for the antenna. For quarter-wave antennas mounted above earth, the poor conductivity of the soil results in excessive power loss from the induced amount in the soil.