AN IMPROVED ANTENNA FOR A RADIO BASE STATION IN A MOBILE CELLULAR TELEPHONY NETWORK

摘要

The invention discloses an antenna device (100, 200, 300) for a radio base station (105) in a mobile cellular telephony network, comprising a first sub-antenna (110, 210) with a first feed network (120, 220) for distributing signals within the first sub-antenna, also comprising a second sub-antenna (112, 212) with a second feed network (175, 275) for distributing signals within the second sub-antenna. The first and the second feed networks are connected to a common main feed network (170, 270), thus providing the antenna device with a single feed port. The device further comprises control means (150,188) for control of at least one of the sub-antennas. The antenna device (100, 200, 300) may also comprise means (295) for introducing a time delay (T) in signals being transmitted or received by at least one of the first and second sub-antennas.