Connection between the chassis length, bandwidth, efficiency, and SAR of internal handset antennas

Author

Kivekis, O. ; Ollikainen, J. ; Lehtiniemi, T. ; Vainikainen, Pertti

Author_Institution

SMARAD Radio Lab., Helsinki Univ. of Technol., Espoo, Finland

Volume

2

fYear

2003

fDate

31 March-3 April 2003

Firstpage

735

Abstract

In this paper, the effect of the chassis length on the overall performance (including bandwidth, radiation efficiency, and specific absorption rate (SAR) characteristics) of the combination of an internal shorted patch-type mobile phone antenna and phone chassis is studied with simulations. The bandwidth characteristics are studied in free space using a MoM-based commercial simulator with phone models that have been validated with measurements. The effect of the chassis length on the SARs and radiation efficiency is determined when the phone models are in actual handset use position beside an anatomical heterogeneous head model. These simulations have been performed with a commercial FDTD software.

Keywords

UHF antennas; UHF radio propagation; electromagnetic coupling; electromagnetic wave absorption; method of moments; microstrip antennas; mobile antennas; mobile handsets; 1800 MHz; 900 MHz; MoM-based simulator; SAR; UHF; anatomical heterogeneous head model; bandwidth; chassis length; internal shorted patch-type mobile phone antenna; phone chassis; radiation efficiency; specific absorption rate;

fLanguage

English

Publisher

iet

Conference_Titel

Antennas and Propagation, 2003. (ICAP 2003). Twelfth International Conference on (Conf. Publ. No. 491)

Print_ISBN

0-85296-752-7

Type

conf

DOI

10.1049/cp:20030181

Filename

1353750