Characterization and dosimetry of TEM cells for bioelectroma gnetic studies

In this paper, characterization and dosimetry for two Transverse Electromagnetic (TEM) cells by measurements and simulations at the frequency of 1800 MHz are presented. The characterization consists of assessing the S-parameter and the dosimetry consists of getting the Specific Absorption Rate (SAR) values for two TEM cells with 20 cm and 40 cm length. Two Petri dishes put inside the TEM cells and filled with a biological solution are used as a biological load. The transmission and reflection coefficients prove that the bandwidth for both TEM cells is more than 1 GHz. The average SAR values, normalized per input power, for the 20 cm and 40 cm TEM cells are 1 ± 0.5 W/kg/W and 0.29 ± 0.17 W/kg/W, respectively. These values are recorded for 2 mL of biological solution contained in the Petri dish.