Adaptive base station antennas for mobile communication systems

There has been a rapid increase in the number of mobile communication users, resulting in an equally rapid need for increased capacity in the networks. Extensive research and development work on advanced base station antennas for mobile communication is in progress at Ericsson. This includes both active and adaptive antenna systems. With the introduction of active antenna products, it is now possible to use small-size base stations, with high levels of equivalent radiated power (ERP) and low power consumption. Array designs and measured results from the work on adaptive base station antennas are presented.