Elliptical Dual-Polarized High Gain Horn Antenna for Cell Partitioning in Millimeter-wave Mobile Communications

Partitioning of mobile communication cells using high gain antennas, e.g. lens-horn antennas, has the potential to improve mobile communication links. Depending on the environment, the radiation pattern has to be shaped to achieve optimal coverage. In the case of dual-polarized elliptical-shaped horn antennas, the differences in radiation characteristics for each polarization state has to be considered. In this paper, the design of a compact elliptical lens-horn antenna fed by a circular waveguide is shown. The simulated radiation patterns of the two orthogonal radiation patterns show mainly an influence in the cut along the short axis. In this cut, the beam broadens by 3.8°. Due to the broader beamwidth, the antenna gain reduces by 1.9 dB, which has to be taken into account during the radio planning phase of the cell partitioning.