Experimental Assessment of Specific Absorption Rate Using Room Electromagnetics

Aliou Bamba, Wout Joseph, Jørgen Bach Andersen, Emmeric Tanghe, Günther Vermeeren, David Plets, Jesper Ødum Nielsen, Luc Martens

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Abstract

A closed room environment is viewed as a lossy cavity, characterized by possibly a line of sight (LOS) component and diffuse scattering parts from walls and internal obstacles. A theory used in acoustics and reverberation chambers is applied for the electromagnetics case, and main issues related to measurement systems, antennas characteristics, diffuse energy properties, and human exposure are investigated. The goal of this paper aims first towards validation of the assessment of the reverberation time in an environment using a virtual MIMO channel system. Secondly, the reverberation time in an adjacent room is investigated and hence a measurement based method is readily developed to assess the absorption cross section and the whole-body specific absorption rate of humans at 2.3 GHz in a realistic closed environment.
Original languageEnglish
JournalI E E E Transactions on Electromagnetic Compatibility
Volume54
Issue number4
Pages (from-to)747-757
Number of pages11
ISSN0018-9375
DOIs
Publication statusPublished - Aug 2012

Keywords

  • room electromagnetics
  • reverberation time
  • absorption cross section
  • power density
  • specific absorption rate
  • SAR
  • diffuse scattering

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