论文信息 - Measurement and Computational Modeling of Radio-Frequency Electromagnetic Power Density Around GSM Base Transceiver Station Antennas

Measurement and Computational Modeling of Radio-Frequency Electromagnetic Power Density Around GSM Base Transceiver Station Antennas

Evaluating the power densities emitted by GSM1800 and GSM900 BTS antennas is conducted via two methods. Measurements are carried out in half a square meter grids around two antennas. CST Microwave STUDIO software is employed to estimate the power densities in order for detailed antenna and tower modeling and simulation of power density. Finally, measurements obtained from computational and experimental methods were compared through the contour lines using the statistical Surfer software. After measuring and simulating all values, it turns out that power density is generally lower than the permissible exposure limits although exceeds the limits in some sample points . According to the measurements, simulation error in stations GSM900 and GSM1800 are 10% and 8%, respectively. Findings from contour-line-maps illustrates that direct measurement method follows the same emission pattern as the computational method does. It validates the computational approach and the models attained for BTS power density estimation. Review History: Received: 8 October 2016 Revised: 26 August 2017 Accepted: 26 August 2017 Available Online: 17 September 2017

[1] Geoffrey G. Eichholz,et al. RF/Microwave Interaction with Biological Tissues , 2006 .

[2] S. Radiman,et al. Assessment of radiofrequency/microwave radiation emitted by the antennas of rooftop-mounted mobile phone base stations. , 2006, Radiation protection dosimetry.

[3] S. Miclaus,et al. ESTIMATED AND MEASURED VALUES OF THE RADIOFREQUENCY RADIATION POWER DENSITY AROUND CELLULAR BASE STATIONS ê , 2007 .

[4] K. Jokela,et al. ICNIRP Guidelines GUIDELINES FOR LIMITING EXPOSURE TO TIME-VARYING , 1998 .

[5] Pranas Baltrenas,et al. INDOOR MEASUREMENTS OF THE POWER DENSITY CLOSE TO MOBILE STATION ANTENNA , 2011 .

[6] S Banik,et al. Bioeffects of microwave--a brief review. , 2003, Bioresource technology.

[7] Seyed Bagher Mortazavi,et al. Nonthermal Effects of Radar Exposure on Human: A Review Article , 2014 .

[8] Ronald Kitchen. RF and microwave radiation safety handbook , 2001 .

[9] Qing Qing He,et al. Accurate Method to Estimate EM Radiation from a GSM Base Station , 2014 .

[10] Tommi Alanko,et al. Occupational exposure to RF fields from base station antennas on rooftops , 2008, Ann. des Télécommunications.

[11] Y Alfadhl. Numerical evaluations on the interaction of electromagnetic fields with animals and with biological tissues. , 2006 .

[12] P. O. Ushie,et al. Measurement and Analysis of Radio-frequency Radiation Exposure Level from Different Mobile Base Transceiver Stations in Ajaokuta and Environs, Nigeria , 2013 .