Specific absorption rate assessment near a base-station antenna (2,140 MHz): some key points
- 118 Downloads
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.
KeywordsExposure assessment Numerical dosimetry FDTD UMTS base-station antenna
This work has been supported by the Réseau National de Recherche en Télécommunications, project ADONIS/ISIS.
- 1.ICNIRP (1998) Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz). Health Phys. 744:494–522, AprilGoogle Scholar
- 2.IEEE, Standard for safety levels with respect to human exposure to radio frequency electromagnetic fields, 3 kHz to 300 GHz, 1999, IEEE standard C95-1-1999Google Scholar
- 5.Martin A, Villar R, Martinez-Burdalo M (2005) Guidelines compliance at different frequencies near base-station antennas. Bioelectromagnetics 2005, Dublin, Ireland, June 19–24Google Scholar
- 6.Lacroux F et al (2006) SAR and averaged power density near a UMTS base-station antenna, 2006 IEEE MTT-S International Microwave Symposium, San Francisco, June 11–16, 2006Google Scholar
- 9.Hirata A, Kodera S, Wang J, Fujiwara O (2006) Mechanism for double-humped frequency characteristics of whole-body average SAR due to far-field exposure at ICNIRP reference level, EMC Europe, Barcelona, pp 598–602Google Scholar
- 12.Bahr A, Manteuffel D, Heberling D (2000) Occupational safety in the near field of a GSM base station, in Proc. AP2000, Davos, Greece, April 2000, 3A6.7Google Scholar
- 16.IEC 62209-1-Ed. 1.0, Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices—human models, instrumentation, and procedures—Part 1: Procedure to determine the specific absorption rate (SAR) for hand-held devices used in close proximity to the ear (frequency range of 300 MHz to 3 GHz)Google Scholar