A Graphical Method for the Estimation of Radiation Hazards from a Crowded Multiple Antenna Site |
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Authors: | Moshe Z. Netzer Avi Shechter Zvi Karni |
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Affiliation: | (1) EMC Engineering and Safety, 11 Avigail St., Haifa, Israel;(2) Advanced Technologies & International Programs, Alion Science and Technology, JJMA Maritime Sector, Alexandria, VA, USA |
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Abstract: | Summary The major objective of the design of safe crowded transmitting antenna sites is not only to determine a safe zone around each individual antenna; rather, to establish safety areas at the antenna site itself, as well as, at the neighboring areas. The requirement is to ascertain the safety regions by considering the following parameters at each Test Point (TP) (or area segment): the contribution of N co-located radiating antennas to the total radiation incident at the TP, the radiation pattern of each antenna, the near/far field region of each antenna, and most importantly, the different Permissible Exposure Limits (PELs) associated with each operating frequency at the antenna site. Implementation of all the above-mentioned aspects in a suitable computer requires resources that only expert knowledgeable organizations possess. The graphically aided tool presented in this paper facilitates the calculation of a “safety zone” for RADHAZ around a crowded antenna site from the knowledge of the “safety ranges” which correspond to the individual transmitting antennas comprising it. |
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Keywords: | electromagnetic compatibility (EMC) non-ionizing radiation radiation hazards (RADHAZ) graphical method algorithm multiple antenna site permissible exposure limits RADHAZ safe |
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