In this paper, a numerical dosimetry study for a typical base-station antenna used in third generation system is presented. This study is based on the limits defined by the International Commission on Non-Ionizing Radiation Protection. The primary goal is to analyze the relationship between the antenna input powers required to reach the specific absorption rate (SAR) limit and those ones which are required to reach the power density limit. The secondary goal is to underline the key points which impact the local SAR in the case of such a directive antenna. Moreover, for these studies, two numerical approaches are used: the first one is only based on the finite difference time domain method and, in the second one, this algorithm is coupled with a method of moments simulator via a Huygens box. Investigations are made to ensure that a more suitable numerical approach is used.

This articlepresents an on‐body radio channel modeling at 900MHz using the FDTD technique. The modification of antennas parameters when they are close to the body or directly on the body is analyzed. Then, the influence of the morphology on the propagation is studied; SAR and channel parameters are also extracted. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2498–2501, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24592

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