Abstract: A sectorized cellular radio base station antenna is provided comprising: a plurality (e.g. six) of angularly separated directional transmit antennas (11), each transmit antenna having a central access of transmission, for serving mobile units located in sectors centered on the axis of transmission of the transmit antennas; a plurality (e.g. six) of angularly separated directional receive antennas (30), each having a central axis of reception; and diversity combining means for combining signals from adjacent receive antennas. The central axis of the receiving antennas are at an angular offset to the central axis of the transmit antennas and, for a mobile in a given sector served by a given transmit antenna, the diversity combining means are arranged to combine the signals from the two receive antennas the axes of which lie on either side of that transmit antenna axis.