Polarization Effect Assessment of Sub-6 GHz Frequencies on Adult and Child Four-Layered Head Models
Received: 20 May 2022 | Revised: 8 June 2022 | Accepted: 13 June 2022 | Online: 19 June 2022
Corresponding author: S. S. Pudipeddi
Nowadays, with the extensive use of mobile phones, the Electromagnetic (EM) radiation penetration from Radio Frequencies (RFs), particularly into the human head, is an issue that needs resolving. Some serious biological hazards occur inside the human body due to RF radiation accumulation. The RF radiation can be minimized by embodying shielding and coating materials on the front side of the mobile handset. The novelty of the proposed work is the use of mathematical analysis in calculating the Specific Absorption Rate (SAR) absorbed by planar four-layer adult and child head models when exposed to mobile smartphone RF radiation. The variation of SAR with the Angle of Incident (AoI) of the EM wave considers Transverse Electric (TE) and Transverse Magnetic (TM) Polarization. The SAR absorption alteration with the AoI of the EM wave is calculated with the help of the shielding effectiveness parameter of the external Polyethylene Terephthalate (PET) shield coated with conductive copper (Cu) mesh, forming a laminated shield using the methodology of the transmission line method. Furthermore, the SAR variation with AoI for both human head models is calculated theoretically at Sub-6 GHz mobile frequencies of 4.5GHz and 3.6GHz. SAR of 7.41e-12 W/kg and 4.41e-11 W/kg is achieved theoretically for adult and child head models respectively, at 89° TE polarization at 4.5GHz.
Keywords:Specific Absorption Rate (SAR), Transverse Electric Polarization, Transverse Magnetic Polarization, Shielding Effectiveness (SE), Four-Layered Head Model
D. T. T. My, H. N. B. Phuong, T. T. Huong, and B. T. M. Tu, "Design of a Four-Element Array Antenna for 5G Cellular Wireless Networks," Engineering, Technology & Applied Science Research, vol. 10, no. 5, pp. 6259–6263, Oct. 2020. DOI: https://doi.org/10.48084/etasr.3771
T. Jadhav and S. Deshpande, "A Tri-band Planar Inverted-F Antenna with Complementary Split Ring Resonator and Reactive Impedance Surface for Wireless Application," Engineering, Technology & Applied Science Research, vol. 12, no. 1, pp. 7988–7992, Feb. 2022. DOI: https://doi.org/10.48084/etasr.4592
S. Ghnimi, A. Nasri, and A. Gharsallah, "Study of a New Design of the Planar Inverted-F Antenna for Mobile Phone Handset Applications," Engineering, Technology & Applied Science Research, vol. 10, no. 1, pp. 5270–5275, Feb. 2020. DOI: https://doi.org/10.48084/etasr.3287
D. Vatamanu and S. Miclaus, "Magnetite Particle Presence in the Human Brain: A Computational Dosimetric Study to Emphasize the Need of a Complete Assessment of the Electromagnetic Power Deposition at 3.5 GHz," Engineering, Technology & Applied Science Research, vol. 11, no. 5, pp. 7720–7729, Oct. 2021. DOI: https://doi.org/10.48084/etasr.4466
D. B. Deaconescu, A. M. Buda, D. Vatamanu, and S. Miclaus, "The Dynamics of the Radiated Field Near a Mobile Phone Connected to a 4G or 5G Network," Engineering, Technology & Applied Science Research, vol. 12, no. 1, pp. 8101–8106, Feb. 2022. DOI: https://doi.org/10.48084/etasr.4670
H. Khan et al., "Analytical Study of Specific Absorption Rate Distribution on Different Antennas Operating At 2.4 Ghz Using HFSS," International Journal of Applied Engineering Research, vol. 10, pp. 19855–19866, Jan. 2015.
B. P. Nadh, B. T. P. Madhav, and M. S. Kumar, "Design and analysis of dual band implantable DGS antenna for medical applications," Sadhana, vol. 44, no. 6, May 2019, Art. no. 131. DOI: https://doi.org/10.1007/s12046-019-1099-8
International Commission on Non-Ionizing Radiation Protection, "Guidelines for Limiting Exposure to Electromagnetic Fields (100 kHz to 300 GHz)," Health Physics, vol. 118, no. 5, pp. 483–524, Dec. 2020. DOI: https://doi.org/10.1097/HP.0000000000001210
F. G. K. Abdulla and R. Abdulla, "A Comparative Application for Evaluating Composite Fabrics Used in Electromagnetic Shielding," Engineering, Technology & Applied Science Research, vol. 7, no. 6, pp. 2156–2159, Dec. 2017. DOI: https://doi.org/10.48084/etasr.1480
F. Akleman and L. Sevgi, "FDTD analysis of human head-mobile phone interaction in terms of specific absorption rate calculations and antenna design," in IEEE-APS Conference on Antennas and Propagation for Wireless Communications (Cat. No.98EX184), Waltham, MA, USA, Nov. 1998, pp. 85–88.
M. Martinez-Burdalo, A. Martin, M. Anguiano, and R. Villar, "Comparison of FDTD-calculated specific absorption rate in adults and children when using a mobile phone at 900 and 1800 MHz," Physics in Medicine and Biology, vol. 49, no. 2, pp. 345–354, Jan. 2004. DOI: https://doi.org/10.1088/0031-9155/49/2/011
A. A. Omar, Q. M. Bashayreh, and A. M. Al-Shamali, "Investigation of the effect of obliquely incident plane wave on a human head at 900 and 1800 MHz," International Journal of RF and Microwave Computer-Aided Engineering, vol. 20, no. 2, pp. 133–140, 2010. DOI: https://doi.org/10.1002/mmce.20402
A. I. Sabbah, N. I. Dib, and and M. A. Al-Nimr, "SAR and Temperature Elevation in a Multi-Layered Human Head Model Due to an Obliquely Incident Plane Wave," Progress In Electromagnetics Research M, vol. 13, pp. 95–108, 2010. DOI: https://doi.org/10.2528/PIERM10051502
R. Morimoto, I. Laakso, V. D. Santis, and A. Hirata, "Relationship between peak spatial-averaged specific absorption rate and peak temperature elevation in human head in frequency range of 1–30 GHz," Physics in Medicine and Biology, vol. 61, no. 14, pp. 5406–5425, Apr. 2016. DOI: https://doi.org/10.1088/0031-9155/61/14/5406
T. Jiubin and Y. Liu, "Frequency Dependent Model of Sheet Resistance and Effect Analysis on Shielding Effectiveness of Transparent Conductive Mesh Coatings," Progress In Electromagnetics Research, vol. 140, pp. 353–368, 2013. DOI: https://doi.org/10.2528/PIER13050312
S. Walia, A. K. Singh, V. S. G. Rao, S. Bose, and G. U. Kulkarni, "Metal mesh-based transparent electrodes as high-performance EMI shields," Bulletin of Materials Science, vol. 43, no. 1, Aug. 2020, Art. no. 187. DOI: https://doi.org/10.1007/s12034-020-02159-7
R. B. Schulz, V. C. Plantz, and D. R. Brush, "Shielding theory and practice," IEEE Transactions on Electromagnetic Compatibility, vol. 30, no. 3, pp. 187–201, Dec. 1988. DOI: https://doi.org/10.1109/15.3297
B. Rajagopal and L. Rajasekaran, "SAR assessment on three layered spherical human head model irradiated by mobile phone antenna," Human-centric Computing and Information Sciences, vol. 4, no. 1, Aug. 2014, Art. no. 10. DOI: https://doi.org/10.1186/s13673-014-0010-1
A. Drossos, V. Santomaa, and N. Kuster, "The dependence of electromagnetic energy absorption upon human head tissue composition in the frequency range of 300-3000 MHz," IEEE Transactions on Microwave Theory and Techniques, vol. 48, no. 11, pp. 1988–1995, Aug. 2000. DOI: https://doi.org/10.1109/22.884187
P. S. Spandana and P. V. Y. Jayasree, "Numerical Computation of SAR in Human Head with Transparent Shields Using Transmission Line Method," Progress In Electromagnetics Research M, vol. 105, pp. 31–45, Jul. 2021. DOI: https://doi.org/10.2528/PIERM21080405
P. K. Dutta, P. V. Y. Jayasree, and V. S. S. N. S. Baba, "SAR reduction in the modelled human head for the mobile phone using different material shields," Human-centric Computing and Information Sciences, vol. 6, no. 1, Apr. 2016, Art. no. 3. DOI: https://doi.org/10.1186/s13673-016-0059-0
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