Rapid and accurate broadband absorption cross-section measurement of human bodies in a reverberation chamber

TY - JOUR

T1 - Rapid and accurate broadband absorption cross-section measurement of human bodies in a reverberation chamber

AU - Flintoft, Ian David

AU - Melia, Gregory Connor Richard

AU - Robinson, Martin Paul

AU - Dawson, John Frederick

AU - Marvin, Andy

N1 - © 2015 IOP Publishing. This is an author produced version of a paper published in Measurement Science and Technology. Uploaded in accordance with the publisher's self-archiving policy.

PY - 2015/5/14

Y1 - 2015/5/14

N2 - A measurement methodology for polarization and angle of incidence averaged electromagnetic absorption cross-section using a reverberation chamber is presented. The method is optimized for simultaneous rapid and accurate determination of average absorption cross-section over the frequency range 1–15 GHz, making it suitable for use in human absorption and exposure studies. The typical measurement time of the subject is about 8 min with a corresponding statistical uncertainty of about 3% in the measured absorption cross-section. The method is validated by comparing measurements on a spherical phantom with Mie series calculations. The efficacy of the method is demonstrated with measurements of the posture dependence of the absorption cross-section of a human subject and an investigation of the effects of clothing on the measured absorption which are important considerations for the practical design of experiments for studies on human subjects.

AB - A measurement methodology for polarization and angle of incidence averaged electromagnetic absorption cross-section using a reverberation chamber is presented. The method is optimized for simultaneous rapid and accurate determination of average absorption cross-section over the frequency range 1–15 GHz, making it suitable for use in human absorption and exposure studies. The typical measurement time of the subject is about 8 min with a corresponding statistical uncertainty of about 3% in the measured absorption cross-section. The method is validated by comparing measurements on a spherical phantom with Mie series calculations. The efficacy of the method is demonstrated with measurements of the posture dependence of the absorption cross-section of a human subject and an investigation of the effects of clothing on the measured absorption which are important considerations for the practical design of experiments for studies on human subjects.

KW - ABSORPTION CROSS-SECTION

KW - reverberation chamber

KW - specific absorption rate

U2 - 10.1088/0957-0233/26/6/065701

DO - 10.1088/0957-0233/26/6/065701

M3 - Article

SN - 0957-0233

VL - 26

JO - Measurement Science and Technology

JF - Measurement Science and Technology

IS - 6

M1 - 065701

ER -