Diversity Characterization of Optimized Two-Antenna Systems for UMTS Handsets

Autor: P.-S. Kildal, M. Franzén, G. Kossiavas, R. Staraj, C. Luxey, P. Le Thuc, A. Diallo
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Zdroj: EURASIP Journal on Wireless Communications and Networking, Vol 2007 (2008)
Druh dokumentu: article
ISSN: 1687-1472
1687-1499
DOI: 10.1155/2007/37574
Popis: This paper presents the evaluation of the diversity performance of several two-antenna systems for UMTS terminals. All the measurements are done in a reverberation chamber and in a Wheeler cap setup. First, a two-antenna system having poor isolation between its radiators is measured. Then, the performance of this structure is compared with two optimized structures having high isolation and high total efficiency, thanks to the implementation of a neutralization technique between the radiating elements. The key diversity parameters of all these systems are discussed, that is, the total efficiency of the antenna, the envelope correlation coefficient, the diversity gains, the mean effective gain (MEG), and the MEG ratio. The comparison of all these results is especially showing the benefit brought back by the neutralization technique.
Databáze: Directory of Open Access Journals
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