The phantoms are human body cavity models containing a tissue simulating
liquid of equivalent dielectric parameters to that of homogenous biological
tissue. The dielectric liquid closely approximates the density and
conductivity of human blood and tissue. The thickness of the phantom and
its dielectric characteristics are exactly defined by the standards. Body
symmetry is explored in the whole body phantoms and a computer controlled
robot-mounted probe is used to plot the electromagnetic field density, yielding
whole-body 3-D field maps when reflected in the centre sagittal plane.
Similarly, head phantoms are used to map the electromagnetic field in the human
head caused by mobile phones and other communications equipment such as UHF
radios and cordless telephones. The industry standard SAM phantom called
up by EN50361 and IEEE 1528, is used for SAR evaluation of devices used at the head.
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