Evaluation of near field of the GSM base station antennas in urban environment

Wójcik, D.

doi:10.1109/mikon.2002.1017832

Cited by 10 publications

(12 citation statements)

References 3 publications

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“…)ߠ(ܨ‬ The main lobe of ‫)ߠ(ܨ‬ will be approximated by the normalized function cos q (θ), or in a general manner to include tilt, cos q (θ-α). This approximation is essential to have an analytical solvable derivative and is used as a model reference in [14] [15]. Following ITU-T Recommendation K.52 [13], the side lobe envelope will be approximated by a constant envelope A sl , given by the side lobe level (SLL), modulated by a short dipole factor (cos 2 θ).…”

Section: Wherementioning

confidence: 99%

Estimating the location of maximum exposure to electromagnetic fields associated with a radiocommunication station

Linhares

Terada

Soares

2013

J. Microw. Optoelectron. Electromagn. Appl.

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This paper proposes an approach to estimate the probable location of maximum exposure to electromagnetic fields associated with a radiocommunication station, based only on information of antenna's height, half-power angle and tilt. This approach can be implemented when simulation tools are absent, or/and few basic information on radiating system is available. The proposed analytical expression is compared with simulated and real measured data, showing the good accuracy of the proposed technique. The focus of the work are base stations, however the results may be applicable to any radiocommunication station. As far as the authors know, this is the first study to present a mathematical formulation in closed form under the considered constraints.

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Section: Wherementioning

confidence: 99%

Estimating the location of maximum exposure to electromagnetic fields associated with a radiocommunication station

Linhares

Terada

Soares

2013

J. Microw. Optoelectron. Electromagn. Appl.

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“…From the aspect of safety, it is very important to exactly determine space around the antenna, where exposure is above allowed values for general populationas given in [6,7]. We are able topredict positions of all points in space in vicinity of emitter,that must be avoided due to the overrun of radiation intensity and give true display.…”

Section: Measurement Methods and Preparation Through Theoretical Estimentioning

confidence: 99%

Air Pollution-Present and Future Challenges, Case Study Sanitary Landfill Brijesnica in Bijeljina

Knežević

Knežević²

2019

AFST

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Intensity of electromagnetic pollution is followed by rapid increasing of new telecommunication technologies over the years. In order to prevent enlarged exposed of general population with doses of electromagnetic radiation above allowed for general population, living as well as working environment around antenna systems should be tested. Using sophisticated measurement equipment we measure intensity of electric field emitted from base station located at shopping center in urban zone of the Banja Luka city. Theoretical estimation of exposition was preceded to measurement procedure, resulting in mapping of exposure at different altitude around antenna system. This thorough investigation of electromagnetic pollution will become a part of typical systematic testing of high frequency non-ionizing radiation pollution. Tested area, around shopping center, where are located educational institution and sports center is found safe from emitted radiation.

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“…As antenas são elementos que transformam energia eletromagnética confinada em energia eletromagnética irradiada, possibilitando a propagação das ondas eletromagnéticas geradas por transmissores. Uma configuração simples para antenas de ERBs é apresentada na Figura 2, que mostra um conjunto de quatro dipolos com polarização vertical (WOJCIK, 2003).…”

Section: Principais Características Das Antenasunclassified

“…Fonte: Wojcik (2003Adaptado pelo autor, 2014 Atualmente a maioria das antenas utiliza polarização cruzada com ângulo de 45º (Figura 3) entre dipolos com o objetivo de evitar propagação por caminhos diversos (multi path propagation) e melhorar a qualidade do sinal recebido (KABOLI et al, 2012).…”

Section: Figura 2: Painel Com 4 Antenas Dipolounclassified

Avaliação Ambiental dos Campos Eletromagnéticos Irradiados por uma Estação Rádio Base

Manhães¹,

Moreira

Junior³

et al. 2015

Boletim do Observatório Ambiental Alberto Ribeiro Lamego

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A exposição crescente da população em geral às ondas eletromagnéticas em decorrência do crescimento acelerado das facilidades e tecnologias de telecomunicações sem fi o tem motivado a investigação dos possíveis efeitos, sob o ponto de vista da saúde pública, em geral e ocupacional, dos indivíduos envolvidos. Como contribuição da Engenharia Ambiental ao assunto foi efetuada uma revisão abrangente da literatura e realizadas medidas de campo para avaliar a conformidade da Estação Rádio Base localizada no campus Macaé do Instituto Federal Fluminense (IFFluminense) como estudo de caso.

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Evaluation of near field of the GSM base station antennas in urban environment

Cited by 10 publications

References 3 publications

Estimating the location of maximum exposure to electromagnetic fields associated with a radiocommunication station

Estimating the location of maximum exposure to electromagnetic fields associated with a radiocommunication station

Air Pollution-Present and Future Challenges, Case Study Sanitary Landfill Brijesnica in Bijeljina

Avaliação Ambiental dos Campos Eletromagnéticos Irradiados por uma Estação Rádio Base

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