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Specific Absorption Rate Assessment Using Simultaneous Electric Field and Temperature Measurements

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8 Author(s)
Ticaud, N. ; Xlim Res. Inst., Univ. of Limoges, Limoges, France ; Kohler, S. ; Jarrige, P. ; Duvillaret, L.
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In this letter, the temperature measurement ability of an electrooptic probe as well as specific absorption rate (SAR) assessments via simultaneous in situ temperature and electric field characterization are reported. The measurements are carried out at 1800 MHz in a Petri dish filled with a water solution and placed in a transverse electromagnetic (TEM) cell. From the temperature sensitivity measurements, a standard deviation of 27 mK is obtained. The SAR values obtained both via temperature and electric field are also compared to finite-difference time-domain (FDTD) simulated numerical results. A difference of 5% is obtained between the two experimental SAR values. These measured SAR values are consistent with those obtained by the numerical simulations.

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Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )