Investigation of factors affecting power density radiation of mobile phones
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2020-02-25 https://doi.org/10.14419/ijet.v9i1.30045 -
Radiation, Call Seeking, Call Establishment, Call Conversation, Exposure. -
Abstract
The use of mobile phones in Nigeria has greatly increased in the recent year. This has also increased the general population exposure to mobile phone radiation. In this research, the intensity of radiation around selected mobile phones base on some factors are investigated using Radiofrequency Meter (RF) TM-96, 9V DC and Spectrum Analyzer (NA-773, 144/430 MHz) in a bid to confirm how they affect the radiation level. Measurements were taken at distances of 5 cm from the mobile phones when seeking for connections, calls establishing and calls connections under different conditions such as periods of the day, when charging and when not charging, battery charged levels, single and dual SIMs and network signal levels. The radiation levels from the 5 selected mobile phones ranges from 0.3204 to 0.4824 mW/cm2 during call conversation, with the highest radiating mobile phone being Asus while the least was Infinix 3. The radiation levels of these mobile phones are above the International Commission on Non-ionizing Radiation Protection (ICNIRP) reference level, 0.45 mW/cm2. Results also shows that the cell phone battery level, network signal level, the number of inserted SIM cards increases the radiation level of the mobile phones.
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References
[1] Oluwafemi I. B., “Hybrid concatenated coding scheme for MIMO systems†International Journal of Electrical and Computer Engineering,(2015). 5(3), 464-476
[2] Oluwafemi I.B. and Mneney S.H., “Hybrid Concatenated super-orthogonal space-time frequency coded MIMO-OFDM systemsâ€, Research Journal of Applied Science, Engineering and Technology, (2014) 8(4), 530-540.
[3] Oluwafemi I.B. and Mneney S.H.,, “Improved Super-Orthogonal space-time Trellis Coded MIMO-OFDM System†the Institute of Electronic Telecommunication Engineers (IETE) Journal of Research,(2013) 59(6),665-671.
[4] Oluwafemi I.B. and Mneney S.H., “ Review of space-time coded OFDM System for Wireless Communication Systemsâ€, the Institute of Electronic Telecommunication Engineers (IETE) Technical Review,(2013) 30(5),417-426.
[5] Hardell L., Cariberg M., Soderqvi F., Morgan L. L. “Long-term use of cellular phones and brain tumoursâ€. Occupation environment Medicine, (2007). 64(9): 626-632. https://doi.org/10.1136/oem.2006.029751.
[6] Anita G. G. “Genetic damage in mobile phone users: some preliminary findings. Indian Journal of Medical Geneticsâ€, (2005). 11(2): 99-103. https://doi.org/10.4103/0971-6866.16810.
[7] Hardel G. R.â€Neurobehavioral effects among inhabitants around mobile phone base stationsâ€. Neuro Toxicology (2006), 21(4): 19-23.
[8] Maneesh M., Anil P. K., Jayalekshmi H., Bhargav K. and Rohith V. “Radio frequency electromagnetic radiation (RF-EMR) from GSM (0.9/1.8GHz) mobile phones induces oxidative stress and reduces sperm motility in ratsâ€. Clinical Science, (2009). 64(6): 561-565. https://doi.org/10.1590/S1807-59322009000600011.
[9] WHO? Electromagnetic radiation. Etiology of Cancer, (2009). 2(12): 171-172.
[10] Kundi M. “Mobile phone use and cancerâ€. Occupational and Environmental Medicine, (2004). 61(6): 560-70, 487. https://doi.org/10.1136/oem.2003.007724.
[11] Usman A.D., Wan W. F., Kadir Z. A. and Mokhtar M. “Wireless Phones- Electromagnetic Field Radiation Exposure Assessmentâ€. American Journal of Engineering and Applied Sciences, (2009). 2(4): 771-774. https://doi.org/10.3844/ajeassp.2009.771.774.
[12] ICNIRP. “Guidelines for limiting exposure to time-varying electric, magnetic and electromagnetic fields (up to 300GHz)â€. Health Physics Society, (1998). 74(4): 494-522.
[13] Usikalu M. and Akinyemi M. “Monitoring of radiofrequency radiation from selected mobile phonesâ€. Journal of Applied Sciences Research, (2007). 3(12), 1701-1704.
[14] Kitchen, R. “RF and Microwave Radiation Safety Handbookâ€. Newnes. (2001). https://doi.org/10.1016/B978-075064355-9/50001-5.
[15] Chen G. Y. and Lin C. H. “Mobile handset and radiation power absorption from selected mobile phone used in Kenyaâ€. IEEE Xplore, (2007). 66:200-224.
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How to Cite
B. Oluwafemi, I., O. Adeoye, J., M. Faluru, D., & D. Obasanya, D. (2020). Investigation of factors affecting power density radiation of mobile phones. International Journal of Engineering & Technology, 9(1), 223-228. https://doi.org/10.14419/ijet.v9i1.30045Received date: 2019-10-28
Accepted date: 2020-01-01
Published date: 2020-02-25