Antenna-User Interaction in MIMO-Enabled Laptops
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Date
2009-12
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
The operation of wireless personal communication terminals very close to the user inherently faces the problem of electromagnetic (EM) coupling between the device and the biological tissues. In this paper the effects of the electromagnetic antenna-human interaction is studied for a laptop MIMO antenna system, where four integrated antenna elements can operate simultaneously. Two points of view are considered: antenna performance and EM dosimetry. The first one addresses not only the degradation of the antenna performance but includes also the effect of the human proximity on the antenna characteristics, namely scattering matrix, Total Active Reflection Coefficient (TARC), radiation efficiency and envelope correlation between port signals. The exposure of the human tissues to EM radiation is expressed in terms of Specific Absorption Rate (SAR). These characteristics are evaluated as a function of the array excitation scheme (including phased array approach and MIMO-like signaling) and compared to simple scenarios where all the power is radiated only by one antenna element.
Description
Citation
Radioengineering. 2009, vol. 18, č. 4, s. 418-424. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2009/09_04_418_424.pdf
http://www.radioeng.cz/fulltexts/2009/09_04_418_424.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en