Analysis of non-ionizing radiation emitted by radiobase stations with losses evaluated by modelwalfisch Ikegami / Análise de radiação não-ionizante emitida por estações rádio-base com perdas calculadas pelo modelo de Ikegami-Walfisch

AUTOR(ES)

Paulo Henrique Sales Wanderley

DATA DE PUBLICAÇÃO

2009

RESUMO

With the increase in the use of cellular telephony, an explosive growth in the number of radio-base stations installed in populated localities is observed. In this context, this work aims to show how the radio-base stations of cellular system spread its energy in the surrounding environment, and analyze the propagation of this energy, using computer simulations to verify whether the emission of these systems follows the current rules specified for this kind of propagation. The propagation model used for evaluation of losses in the propagation path is COST 231 of Ikegami-Walfisch. This work also emphasizes the use of real models of antennas to carry out the presented simulations. This analysis of losses and the use of real antennas approximates the simulations with the conditions of the real environment of propagation that is simulated. In the cases that the emissions from these systems are not in accordance with the current regulations, this work also examines the factors that generate these shortcomings in terms of the parameters of the cellular system.

ASSUNTO(S)

radiação não-ionizante antenas modelo de ikegami-walfisch propagação eletromagnética engenharia eletrica

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