Performance of antenna array for mobile communications receivers

The rapidly increasing demands in Personal Mobile Communications have determined interest in new antennas architectures.The described antenna system is realized for a scenaro of satellite and terrestrial cellular integrated systems. The work presents linear nd planar array systems capable to estimate the DOA of maximum power path and to adaptively suppress the inetrrfrence signals using beamforming techniques also in a multipath environment with Doppler effects.The use of planar arrays permits to follow the satellite for a longer time than linear arrays, and it is particularly useful in LEO satellite systems, in which the satellite platformis in line of sight for a brief time in a day. The manuscript describes the performance of the MUSIC,minimum norm, Frost and Howells-Applebaum algorithms explained in literature applied to the third Generation UMTS( Universal Mbile Telecommunication System)