Title :
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
fDate :
31 March-3 April 2003
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;
Conference_Titel :
Antennas and Propagation, 2003. (ICAP 2003). Twelfth International Conference on (Conf. Publ. No. 491)
Print_ISBN :
0-85296-752-7
DOI :
10.1049/cp:20030181
