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Reverberation chamber measurement of Human body electromagnetic absorption cross section

ACS measurement of Spherical test object in Reverberation Chamber

Measurement of absorption cross section of spherical test object in reverberation chamber

‌ ‌Absorption cross section of Spherical test object

A‌bsorption cross section of a spherical test object compared with Mie series

Measured ACS of 3 Human subjects

A‌bsorption cross section of human subjects

The electromagnetic radiation dosimetry study on human body is of great interest today, not only because of the safety exposure problems, but also because of its applications to communications such as the indoor radio channel modelling.

It is clear that morphology determines the electromagnetic power absorption. This research focuses on the inverse problem, which is inferring morphology from absorption cross section, especially parameters such as body surface area and average fat layer thickness.

The absorption cross section of an object is the area of an an ideal absorbing object that would have the same absorption as the measured object.  We have performed a number of studies in which the electromagnetic absorption cross section of Human subjects were measured over the frequency range 1-18GHz. 

Key Publications

Zhang, X.; Robinson, M. P.; Flintoft, I. D. & Dawson, J. F. , "Inverse Fourier Transform Technique of Measuring Averaged Absorption Cross Section in the Reverberation Chamber and Monte Carlo Study of its Uncertainty" , 2016 International Symposium on Electromagnetic Compatibility - EMC EUROPE , 263-267 , 5-9 September, 2016 , DOI: 10.1109/EMCEurope.2016.7739161

Zhang, X.; Robinson, M. & Flintoft, I. , "On measurement of reverberation chamber time constant and related curve fitting techniques" , 2015 IEEE International Symposium on Electromagnetic Compatibility (EMC) , 406-411 , Aug, 2015 , DOI: 10.1109/ISEMC.2015.7256196

Flintoft, I. D.; Melia, G. C. R.; Robinson, M. P.; Dawson, J. F. & Marvin, A. C. , "Rapid and accurate broadband absorption cross-section measurement of human bodies in a reverberation chamber" , Measurement Science and Technology , vol. 26, no. 6 , 065701 , 2015 , DOI: 10.1088/0957-0233/26/6/065701

Melia, G. C. R. , "Electromagnetic absorption by the human body from 1 to 15 GHz", PhD Thesis, Department of Electronics, University of York , 2013

Melia, G. C. R. M.; Robinson, M. P.; Flintoft, I. D.; Marvin, A. C. & Dawson, J. F. , "Broadband Measurement of Absorption Cross-Section of the Human Body in a Reverberation Chamber" , IEEE Transactions on Electromagnetic Compatibility , vol. 55, no. 6 , 1043-1050 , 2013 , DOI: 10.1109/TEMC.2013.2248735

Flintoft, I. D.; Robinson, M. P.; Melia, G. C. R.; Marvin, A. C. & Dawson, J. F. , "Average absorption cross-section of the human body measured at 1-12GHz in a reverberant chamber: results of a human volunteer study" , Physics in Medicine and Biology , vol. 59, no. 13 , 3297-3317 , 2014 , DOI: 10.1088/0031-9155/59/13/3297