Title :
MIMO performance of enhanced UMTS four-antenna structures for mobile phones in the presence of the user’s head
Author :
Diallo, A. ; Luxey, C. ; Le Thuc, P. ; Staraj, R. ; Kossiavas, G. ; Franzen, M. ; Kildal, P-.S
Author_Institution :
Univ. of Nice-Sophia Antipolis, Valbonne
Abstract :
In this paper, we have presented the reverberation chambers (RC) evaluation of the multiple-input-multiple-output (MIMO) system performance of several UMTS four-antenna systems with low and high planar inverted-F antennas (PIFAs) isolation. It has been measured that the neutralization technique is always improving the performances even with the presence of the user´s head, due to the high isolation obtained between the antennas and their high total efficiencies.
Keywords :
3G mobile communication; MIMO communication; antenna testing; mobile antennas; mobile handsets; planar antenna arrays; planar inverted-F antennas; reverberation chambers; PIFA; enhanced UMTS four-antenna structures; mobile phones; multiple input multiple output system; neutralization technique; planar inverted-F antennas; reverberation chambers; user head; 3G mobile communication; Antenna measurements; Antennas and propagation; Base stations; Diversity methods; Electromagnetic propagation; MIMO; Mobile handsets; Prototypes; Telephone sets;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4396130
