Dielectric-loaded slotted-cylinder antennas offering reduced base station interference for personal communication services

This paper proposes dielectric loaded slotted-cylinder antennas (DSCA) that have, for PCS, horizontally-polarized omnidirectional radiation patterns to reduce the base station interference. These rod-shape array antennas are achieved by modifying a slotted-cylinder antenna (SCA) to include dielectric loading. The structure of DSCA and the fundamental characteristics, such as input impedance and radiation pattern of the DSCA array, are shown. The reduction in the base station antenna interference level and the radio zone length of the DSCA array are confirmed by measured results on an urban street.