Abstract
Electromagnetic (EM) wave absorption characteristics for a Bonsai tree are investigated at GSM-900 band. Finite Difierence in Time Domain (FDTD) method is hybridized with Friis transmission equation to carry out all the required EM simulations. The tree has been modelled using CT scan based 3D dataset considering difierent electrical parameters. Maximum local electric (E) fleld, magnetic (H) fleld, Speciflc Absorption Rate (SAR) and Shielding Efiectiveness (SE) have been calculated for the tree placing at distance of 5m away from a radiating Base Station Antenna (BSA) with 20W input power. The maximum local E fleld, H fleld, 1-g SAR and SE obtained by the simulation are found to be 70.1V/m, 0.09A/m, 0.135W/kg and 13.18dB, respectively. Plants are found to be good natural electromagnetic radiation shield.
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