Dual polarized antenna using a part of spherical reflector with a rim

摘要

Deploying small cell base stations in the advanced Centralized Radio Access Network architecture is important to increase the radio capacity and user throughput. Antennas used at such small cells need to be downsized and optimized to have equal radiation pattern for each MIMO branch. In this viewpoint, we propose a dual polarized dipole antenna that uses a part of spherical reflector with a rim for small cell deployments. We can minimize the difference in the HPBW between the V and H polarizations by selecting optimal antenna parameters. Based on calculations and measurements, we show that the radiation pattern of the proposed antenna is close to theoretical values and an ideal pattern.