Abstract:
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Great social concern has risen about the potential
health hazard of living near a cellular telephony base-station
antenna, and certain technical questions have been posed on the
appropriate way to measure exposure in its vicinity. In this paper,
standard spherical near–near field transformation is proposed
to obtain the electromagnetic field close to the antenna in free
space conditions. The field obtained in this way allows to define
an exclusion zone from the exposure compliance point of view, but
also makes possible to bound the error committed by standard
field measurement procedures. Furthermore, the visualization of
the electromagnetic field in the proximity of the antenna in free
space conditions, allows to define clearance templates that have
to be met in the siting of the antenna in complex environments in
order not to obstruct its main beam. |