Effects of Mobile Phone Radiation onto Human Head with Variation of Holding Cheek and Tilt Positions

 

M. R. Iqbal-Faruque*¹, N. Aisyah-Husni², Md. Ikbal-Hossain¹, M. Tariqul-lslam² and N. Misran²

 

¹ Space Science Centre (ANGKASA) Research Centre Building Universiti Kebangsaan Malaysia (UKM) 43600 UKM Bangi, Selangor, Malaysia. *rashedgen@yahoo.com

² Department of Electrical, Electronic and Systems Engineering Faculty of Engineering & Built Environment Building Universiti Kebangsaan Malaysia (UKM) 43600 UKM, Bangi, Selangor, Malaysia.

 

Abstract

This paper analyzed the effects of electromagnetic (EM) radiation mobile phone on human head with different holding positions. The Em radiation is measured in terms of specific absorption rate (SAR). The human head exposed to global system for mobile communication (GSM) frequency bands. The radiation absorption analyzed through simulations by applying finite-difference time domain (FDTD) method using computer simulation technology (CST) microwave studio. The specific absorption rate (SAR) was measured for two common holding positions of mobile phone: Cheek and Tilt. In this tilt position, the mobile phone tilted for 15° and 30° from a person's head. SARs exhibited in much lower values as the mobile phone held in cheek position than that of tilt position. Helical antenna with substrate of Rogers RO3006 (loss free) found to be best tested substrate by resulted in lower SAR due to its lower conductivity properties than that of RO4003.

Keywords: different substrates, finite-difference time domain (FDTD) method, head model, mobile phone, specific absorption rate (SAR).

 

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References

[1] WHO 2011 Research Agenda for Radio Frequency Fields, World Health Organization. (2011). Available from: http://edition.cnn.com/2011/HEALTH/05/31/who.cel.phones/index.html        [ Links ]

[2] M. R. I. Faruque et al., "Design analysis of new metamaterial for EM absorption reduction", Progress In Electromagnetics Research, PIER. Vol. 124, pp. 119-135, 2012.         [ Links ]

[3] M. T. Islam et al., "Design analysis of ferrite sheet attachment for SAR reduction in human head", Progress In Electromagnetics Research, PIER. Vol. 98, pp. 191-205, 2009.         [ Links ]

[4] O. Fujiwara and J. Wang, "Comparison and Evaluation of Electromagnetic Absorption Characteristics in Realistic Children for 900 MHz Mobile Telephones", IEEE Trans. Microw. Theory Tech., vol. 51, no. 3, pp. 966-971, 2003.         [ Links ]

[5] M. R. I. Faruque et al., "Electromagnetic (EM) absorption reduction in a muscle cube with metamaterial attachment", Medical Engineering & Physics, vol. 33, no. 5, pp. 646-652, 2011.         [ Links ]

[6] Standard for Safety Levels with Respect to Human Exposure to Radiofrequency Electromagnetic Fields 3 kHz to 300 GHz, IEEE Standards Coordinating Committee 28.4, 2006.         [ Links ]

[7] Human Exposure to Radio Frequency Fields from Hand-held and body-mounted Wireless Communication Devices- Human Models, Instrumentation, and Procedures - Part 1 Procedure to Determine the Specific Absorption Rate (SAR) for Hand-held Devices Used in Close Proximity to the Ear 300 MHz to 3 GHz, IEC 62209-1, 2006.         [ Links ]

[8] M. R. I. Faruque et al., "Effect of human head shapes for mobile phone exposure on electromagnetic absorption", Informacije MIDEM, vol. 40, no. 3, pp. 232-237, 2010.         [ Links ]

[9] M. I. Hossain et al., "Application of Auxiliary Antenna Elements for SAR Reduction in the Human Head," Advanced Materials Research, vol. 974, pp. 288-292, 2014.         [ Links ]

[10] A. H. Kusuma et al., "A new low SAR antenna structure for wireless handset applications", Progress in Electromagnetics Research, vol. 112, pp. 23-40, 2011.         [ Links ]

[11] J. Keshvari et al., "The effect of increase in dielectric values on specific absorption rate (SAR) in eye and head tissues following 900, 1800 and 2450 MHz radio frequency (RF) exposure", Physics in Medical and Biology, vol. 51, no. 6 pp. 1463-1477, 2006.         [ Links ]

[12] T. Takebayashi et al., "Mobile phone use exposure to radio frequency electromagnetic field and brain tumor: A Case-control Study", Brit. J. Cancer, vol. 98, no. 3, pp. 652-659, 2008.         [ Links ]

[13] N. Varsier et al., "Categorization of mobile phone for exposure assessment in epidemiological studies on mobile phone use and brain cancer risk", IEEE Trans. Microw. Theory Tech., vol. 56, no. 10, pp. 2377-2384, 2008.         [ Links ]

[14] J. Wiart et al., "Analysis of the influence of the power control and discontinuous transmission on RF exposure with GSM mobile phone", IEEE Trans. Electromagn. Compat., vol. 42, no. 4, pp. 376-385, 2000.         [ Links ]

[15] M. R. I. Faruque et al., "Design of metamaterial attachment for SAR reduction in human head", Applied Computational Electromagnetic Society Journal, vol. 25, no. 12, pp. 1097-1107, 2010.         [ Links ]

[16] M. R. I. Faruque et al., "Effects of dielectric values & substrate materials on electromagnetic (EM) absorption in human head", Frequenz Journal, vol. 66, no. 3-4, pp. 79-83, 2012.         [ Links ]

[17] B. Beard et al., "Comparisons of Computed Mobile Phone Induced SAR in the SAM Phantom to that in Anatomically Correct Models of the Human Head", IEEE Trans. Electromagn. Compat., vol. 48, no. 2, pp. 397-407, 2006.         [ Links ]

[18] J. Mar et al., "A three-dimensional position architecture using digital TDE receiver and cylindrical array antenna", Journal of Applied Research and Technology, vol. 11, no. 2, pp. 175-182, 2013.         [ Links ]

[19] O. Sharifi-Tehrani, "Design, simulation and implementation of an active sound-noise cancellation system for use in a cockpit intercommunication system", Journal of Applied Research and Technology, vol. 10, no. 5, pp. 731-736, 2012.         [ Links ]

[20] J. Z. Bao et al., "Complex dielectric measurements and analysis of brain tissues in the radio and microwave frequencies", IEEE Trans. Microw. Theory Tech., vol. 45, no. 10, pp. 1730-1741, 1997.         [ Links ]

[21] P. Gajsek et al., "Parametric dependence of SAR on permittivity values in a man model", IEEE Transactions on Biomedical Engineering, vol. 48, no. 10, pp. 1169-1177, 2001.         [ Links ]

[22] Michtchenko, "Numerical and experimental analysis in the manipulation of the mechanical properties for enhancing the mechanical resistance of a material", Journal of Applied Research and Technology, vol. 9, no. 2, pp. 156-172, 2011.         [ Links ]

[23] K. J. Rothman et al., "Assessment of Cellular Telephone and Other Radio Frequency Exposure for Epidemiology Research", Epidemiology, vol. 7, pp. 291-298, 1996.         [ Links ]

[24] M. R. I. Faruque et al., "Analysis of SAR levels in human head tissues for four types of antennas with portable telephones", Australian Journal of Basic and Applied Sciences, vol. 5, no. 3, pp. 96-107, 2011.         [ Links ]

[25] IEEE," C95.3-2002 IEEE Recommended Practice for Measurements and Computations of Radio Frequency Electromagnetic Fields With Respect to Human Exposure to Such Fields, 100 kHz-300 GHz," IEEE vol. New York, 2002. IEEE, New York, 2002.

[26] Ebrahimi-Ganjeh et al., "Interaction of dual band helical and PIFA handset antennas with human head and hand," Progress In Electromagnetics Research, Vol. 77, 225-242, 2007.         [ Links ]