Power deposition in a block model of man exposed to the near field of a λ/2 dipole antenna

Abstract

AbstractIn a previous paper the authors calculated the power absorbed in the head of man holding a portable radio transmitter. It was found that the local absorbed power level exceeded the provisional safety level for ocular damage. For the calculations, however, the head of man was modeled as an isolated lossy sphere, and the effects of the human body and the ground on the absorbed power were not considered. This paper deals with numerical calculations of the absorbed powers in a realistic block model of a man taking into account the effects of the body and the ground. First, some fundamental characteristics are clarified for the calculations using a block model. Second, the absorbed powers in the head of a block model of a man standing on the ground are calculated for both cases when the model is in a plane‐wave field and in the near field of a dipole antenna. The numerical results are compared with those obtained in the previous paper employing the isolated sphere model. It is found from the results that the effects of the body and the ground are less in the near field of an antenna very close to the head than in the field of a plane wave, and that the local specific absorption rate in the eye exceeds the provisional safety level for ocular damage on several cases.