Volume 8, Number 4 (3-2016)                   ijhe 2016, 8(4): 471-480 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Naderi A, Nasseri S, Mahvi A, Monazzam M. Evaluation of transverse waves of BTS antennas in Maragheh. ijhe. 2016; 8 (4) :471-480
URL: http://ijhe.tums.ac.ir/article-1-5484-en.html

1- Department of Environmental Health, MSc Student of Health, Tehran University of Medical Sciences, Tehran, Iran
2- Department of Environmental Health Engineering, School of Public Health, and Center for water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran. , naserise@tums.ac.ir
3- Center for Solid Waste Research (CSWR), Institute for environment Research, Schools of Public Health, Tehran University of Medical Sciences, Tehran, Iran
4- Department of Occupational Hygiene, Professor, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
Abstract:   (2618 Views)

Background and Objectives: Due to the increasing use of mobile phone in recent years, the number of BTS antennas has also increased. .Proliferation of BTS antennas in cities and villages, and perpetuation of encountering with waves from one side and  increasing the anxiety of many people in encountering with their waves from the other side convinced more investigations in this field. Therefore, the purpose of this study was to investigate  the propagation of microwave around the BTS antennas of Maragheh and to compare power density measurements  with allowable environmental standards.

Material and Methods: In this research, the frequency of BTS antennas was determined through field monitoring. Then, measurements were performed using a calibrated Spectran 4060 and the standard method IEEE Std C95.1 was adopted in close and far fields from each antenna. Then, the obtained data were analyzed  after entering to SPSS environment. In this study, the Kolmogrov-Smirnov test, Kruskal-Wallis, and Mann-Whitney tests were used.

Results: This research found  that in both  Irancel and Hamrah Aval operators, the power density increased with distance in close fields and decreased in far fields. Moreover, at the distance of 20 meter, the maximum value of power density was measured. Significant difference between these distances was observed (P-value ≤0.05).

Conclusion: Out of 1804 cases in far and close fields, the highest power density measured at 900 MHz band was 4.51 mW/m2,  which is in accordance with 0.1% permissible exposure.

Full-Text [PDF 1282 kb]   (1818 Downloads)    
Type of Study: Research | Subject: General
Received: 2015/06/15 | Accepted: 2016/03/2 | Published: 2016/03/2

Add your comments about this article : Your username or email:
Write the security code in the box

Send email to the article author


© 2017 All Rights Reserved | Iranian Journal of Health and Environment

Designed & Developed by : Yektaweb