Aalborg Universitet Experimental Assessment of Specific Absorption Rate Using Room

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 measurementbased 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.

[1]  Kin Lien Chee,et al.  Reverberation and Absorption in an Aircraft Cabin With the Impact of Passengers , 2012, IEEE Transactions on Antennas and Propagation.

[2]  Luc Martens,et al.  Statistical Analysis of Multipath Clustering in an Indoor Office Environment , 2011, EURASIP J. Wirel. Commun. Netw..

[3]  J. Wiart,et al.  Influence of Plane-Wave Incidence Angle on Whole Body and Local Exposure at 2100 MHz , 2011, IEEE Transactions on Electromagnetic Compatibility.

[4]  Luc Martens,et al.  STATISTICAL MULTIPATH EXPOSURE OF A HUMAN IN A REALISTIC ELECTROMAGNETIC ENVIRONMENT , 2008, Health physics.

[5]  J. Wiart,et al.  Variability analysis of SAR from 20 MHz to 2.4 GHz for different adult and child models using finite-difference time-domain , 2008, Physics in medicine and biology.

[6]  N. Czink.  The Random-Cluster Model : a stochastic MIMO channel model for broadband wireless communication systems of the 3rd generation and beyond , 2007 .

[7]  A. Hirata,et al.  Correlation Between Absorption Cross Section and Body Surface Area of Human for Far-Field Exposure at GHz Bands , 2007, 2007 IEEE International Symposium on Electromagnetic Compatibility.

[8]  Claude Oestges,et al.  MIMO Wireless Communications: From Real-World Propagation to Space-Time Code Design , 2007 .

[9]  G. Bauch,et al.  Room electromagnetics , 2007, IEEE Antennas and Propagation Magazine.

[10]  O. Fujiwara,et al.  FDTD calculation of whole-body average SAR in adult and child models for frequencies from 30 MHz to 3 GHz , 2006, Physics in medicine and biology.

[11]  H. Suda,et al.  Measurements of indoor 16/spl times/32 wideband MIMO channels at 5.8 GHz , 2004, Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738).

[12]  Pejman Roshan,et al.  802.11 Wireless LAN Fundamentals , 2004 .

[13]  P. Dimbylow,et al.  Fine resolution calculations of SAR in the human body for frequencies up to 3 GHz. , 2002, Physics in medicine and biology.

[14]  S Fujimoto,et al.  Studies on the physical surface area of Japanese. 18. Calculation formulas in three stages over all ages , 1968 .

[15]  H.T. Friis,et al.  A Note on a Simple Transmission Formula , 1946, Proceedings of the IRE.

[16]  Heinrich Kuttruff,et al.  Room acoustics , 1973 .