Outdoor measurement of SAR in a full-sized human model exposed to 29. 9 MHz in the near field
Localized and averaged specific absorption rates (SARs) were obtained in a full-size muscle-equivalent human model exposed to near-field 29.9 MHz irradiation at an outdoor facility. The model was positioned erect on a metallic groundplane 1.22 m (4 ft) from the base of a 10.8-m (35 ft) whip antenna with an input power of 1.0 kW. For whole-body SAR, a mean value of 0.83 W/kg was determined using two gradient-layer calorimeters in a twin-well configuration. The localized SARs at 12 body locations were measured using nonperturbing temperature probes and were highest in the ankle region. We conclude that averaged SAR measurements in a full-size phantom are feasible using a twin-calorimeter approach; measurements in the field are practical when human-size (183 x 61 x 46 cm) calorimeters are used.
- Research Organization:
- Naval Aerospace Medical Research Laboratory, Pensacola, FL (USA)
- OSTI ID:
- 6020080
- Journal Information:
- Bioelectromagnetics (N.Y.); (United States), Vol. 10:2
- Country of Publication:
- United States
- Language:
- English
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