Evaluation of antenna diversity performance for mobile handsets using 3-D measurement data

Author

Braun, Christian ; Engblom, Gunnar ; Beckman, Claes

Author_Institution

Allgon Mobile Commun. AB, Akersberga, Sweden

Volume

47

Issue

11

fYear

1999

fDate

11/1/1999 12:00:00 AM

Firstpage

1736

Lastpage

1738

Abstract

An evaluation of two-branch antenna diversity on mobile telephones is performed in the presence of head and hand phantoms to model the influence of the user. Two mobile telephone prototypes for the 1800-MHz band are considered. The evaluation is done by measuring the three-dimensional (3-D) complex radiation patterns from each antenna with the prototypes positioned near the phantom head and hand (i.e., in talk position) and calculating the diversity performance for three different scenarios of the incoming field. The two-branch antenna setups on both prototypes produce a calculated diversity gain of about 9 dB for selection diversity at the 99% reliability level

Keywords

Rayleigh channels; UHF antennas; UHF measurement; antenna radiation patterns; antenna testing; land mobile radio; mobile antennas; multipath channels; telephone sets; 1800 MHz; 3D complex radiation patterns measurement; 3D measurement data; Rayleigh fading; UHF; antenna diversity performance; diversity gain; hand phantom; head phantom; mobile handsets; mobile telephones; multipath propagation; reliability level; selection diversity; talk position; two-branch antenna diversity; Antenna measurements; Antenna radiation patterns; Diversity methods; Imaging phantoms; Mobile antennas; Mobile handsets; Performance evaluation; Position measurement; Prototypes; Telephony;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.814955

Filename

814955