Performance of a multiband diversity antenna with hand effects
Författare
Summary, in English
Previous studies have concluded that the presence of a user degrades the mean effective gain (MEG) of the diversity antennas significantly [1]-[3]. Different results have been presented on the effect of the user on the correlation coefficient, no effect [1] and a significant increase of the correlation [2], [3], have been pointed out. However, these studies have been performed on simple single band antennas in talk position. In this paper a more realistic approach is presented by choosing the diversity antenna system to comprise compact versions of PIFA and monopole antennas which cover three WCDMA bands: WCDMA850, WCDMA1800 and UMTS [4]. Such compact antennas are easily conformable for small mobile phone products [4]. The choice of the bands, as well as the evaluation of the diversity performance for the data mode position, is derived from the increasing demand on HSDPA applications in the mobile phone market.
The investigation of user interaction presented in this paper focuses on the comparison between the free space and data mode diversity performance of a tri-band “stick” phone size prototype in the uniform 3D propagation environment. A state-of-the-art phantom hand from IndexSAR [5] is used to hold the diversity prototype in the data mode position.
Publiceringsår
2008
Språk
Engelska
Sidor
478-481
Publikation/Tidskrift/Serie
International Workshop on Antenna Technology (iWAT 2008)
Fulltext
- Available as PDF - 231 kB
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Dokumenttyp
Konferensbidrag
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- hand effects
- Multi-band antenna
- correlation
- diversity
Conference name
2008 IEEE International Workshop on Antenna Technology
Conference date
2008-03-04
Conference place
Chiba, Japan
Status
Published
Forskningsgrupp
- Electromagnetic theory
- Radio Systems
ISBN/ISSN/Övrigt
- ISBN: 978-1-4244-1523-3