Title :
Near field in the vicinity of wireless base-station antennas: an exposure compliance approach
Author :
Blanch, Sebastián ; Romeu, Jordi ; Cardama, Angel
Author_Institution :
Dept. of Signal Theor. & Commun., Telecommun. Eng., Univ. Politecnica de Catalunya, Barcelona, Spain
fDate :
5/1/2002 12:00:00 AM
Abstract :
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, a 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 us to define an exclusion zone from the exposure compliance point of view, but also makes it 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 us 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
Keywords :
antenna radiation patterns; antenna testing; cellular radio; conformance testing; dosimetry; electromagnetic fields; field strength measurement; telecommunication equipment testing; antenna measurements; antenna siting; base-station antenna; cellular telephony; clearance templates; electromagnetic field; electromagnetic field visualization; exclusion zone; exposure compliance; field measurement; health hazard; land mobile radio; public safety; spherical near-near field transformation; Antenna measurements; Base stations; Electromagnetic fields; Electromagnetic measurements; FCC; Guidelines; Hazards; Humans; Magnetic field measurement; Probes;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.1011235