EBG-dipole array antenna creating beam-tilt for base-station applications

摘要

For a typical base-station, tilted beam towards the ground has been employed in order to increase the signal reception from the mobile device. This can be realized with either an electronically controlled phased array antenna or a mechanically tilted array antenna. These techniques have been used; however, there exists inherent shortcomings with respect to performance at a tilted angle and practical implementation. For a common phased array, an array pattern is tilted toward a desired direction while element pattern stays toward the broadside. This mainly results in antenna gain reduction at the tilted angle. For the mechanically adjusted array, careful and stable installation is often required, which sometimes make it difficult to implement. Therefore, an enhancement in the conventional base-station array antenna is needed in order to achieve improved antenna performance with robust implementation.