Near field and far field characteristics of a typical base station antenna array with variation in radome material permittivity

The radiation characteristics of a base station antenna system consisting of a dipole array backed by a ground plane is investigated by changing the dielectric parameters of the radome enclosure. The changes in directive gain, return loss and HPBW is observed and the radiated electric field strength is measured in the reactive near field and the radiating near field region of the antenna-radome system by taking teflon, polyvinyl chloride and fibre glass as the radome materials.