SAM Head

Specific Anthropomorphic Mannequin (SAM) geometry is placed in different orientations relative to the coordinate system to perform SAR calculations.

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While anatomically correct head and body meshes, such as the Remcom High Fidelity meshes, provide more accurate and realistic results, many standards involving Specific Absorption Rate (SAR) limits use head phantoms for testing. A widely accepted phantom head is the Specific Anthropomorphic Mannequin (SAM).

The CAD files for the inner and outer portions of SAM are first imported into XFDTD as separate objects with different materials. The shell file is the outer insulating shell of the SAM including the ear spacers. The inner file corresponds to the interior of SAM which is filled with a conducting dielectric to approximate brain tissue. The result of importing the SAM cad files into XFDTD is shown in Figure 1.

To illustrate using XFDTD for a SAR calculation for a phone, a CAD file of a phantom phone was obtained and also imported into XFDTD. It is easy to orient the phone relative to the SAM head using the move function. Repeated applications allow the user to