Title :
Compact Multiple Antennas in a Random World
Author :
Andersen, J. Back ; Lau, B.K.
Author_Institution :
Dept. of Commun. Technol., Aalborg Univ.
Abstract :
Recent work on compact multiple antennas in a random environment is reviewed, including extensions of the energy density antenna and the MIMO cube. The performance of handsets with multiple antennas is dependent on many factors due to the close proximity of the antennas. The distribution of scatterers in the environment has an impact on the distributed directivity of the antennas, the powers absorbed in the loads, and the correlation between the open-circuit signals. Matching the antennas is non-trivial, since the matching changes the output correlations and the efficiency. The antennas may be matched for maximum MIMO capacity for a given environment. Basic bandwidth limitations are also discussed.
Keywords :
MIMO communication; antenna arrays; MIMO cube; bandwidth limitations; compact multiple antennas; distributed directivity; energy density antenna; maximum MIMO capacity; open-circuit signals; random world; scatterer distribution; Antennas and propagation; Bandwidth; Communications technology; Dipole antennas; Loaded antennas; MIMO; Polarization; Scattering; Tail; Telephone sets;
Conference_Titel :
Antenna Technology: Small and Smart Antennas Metamaterials and Applications, 2007. IWAT '07. International Workshop on
Conference_Location :
Cambridge
Print_ISBN :
1-4244-1088-6
Electronic_ISBN :
1-4244-1088-6
DOI :
10.1109/IWAT.2007.370070