Progress In Electromagnetics Research M
ISSN: 1937-8726
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By K. Yekeh Yazdandoost and I. Laakso

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Study on the interactions between electromagnetic fields and biological tissue at high frequency band is an important aspect in the area of wireless communications. The use of millimeterwave frequency band for fifth Generation (5G) devises involves new challenges in terms of Radio Frequency Electromagnetic Field Exposure (RF-EMF) limits and compliance assessment since the basic restrictions for limiting human exposure change from the Specific Absorption Rate (SAR) to the power density. The Electromagnetic Field Exposure to the human head has been studied based on power density by means of numerical simulation for the frequency band of 10 GHz. Study on radio frequency energy absorption has been done based on radiation from a printed monopole antenna at frequency of 10 GHz, transmitting directly towards the human head tissue model. Human head model is constructed from magnetic resonance images with frequency dependent tissue electrical properties. It is shown that at millimeter wave frequency, i.e. 10 GHz, with realistic source (20 mW) and head-source separation distance (10 mm), the amount of power density is in the range of regulatory limits and requirements on EMF exposure. The obtained results might provide valuable information for the design of 5G handheld devices and EMF compliance assessment.

K. Yekeh Yazdandoost and I. Laakso, "Numerical Modeling of Electromagnetic Field Exposure from 5G Mobile Communications at 10 GHz ," Progress In Electromagnetics Research M, Vol. 72, 61-67, 2018.

1. Wunder, G., H. Boche, T. Strohmer, and P. Jung, "Sparse signal processing concepts for efficient 5g system design," IEEE Access, Vol. 3, 195-208, Mar. 2015.

2. Tullberg, H., et al., "The METIS 5G system concept: Meeting the 5G requirements," IEEE Commun. Mag., Vol. 54, No. 12, 132-139, Dec. 2016.

3. Daniels, R. C. and R. W. Heath, "60 GHz wireless communications: Emerging requirements and design recommendations," IEEE Veh. Technol. Mag., Vol. 2, No. 3, 41-50, Feb. 2008.

4. Bahramzy, P., S. Svendsen, O. Jagielski, and G. Frølund Pedersen, "SAR study of mobile phones as a function of antenna Q," IEEE Transactions on Antennas and Propagation, Vol. 63, No. 9, 4139-4147, 2015.

5. Lazarescu, C., I. Nica, and V. David, "SAR in human head due to mobile phone exposure," 2011 E-Health and Bioengineering Conference (EHB), 1-4, 2011.

6. Chen, I.-F., C.-M. Peng, and C.-C. Hung, "Experimental study of estimating SAR values for mobile phone applications," 2008 IEEE Antennas and Propagation Society International Symposium, 1-4, 2008.

7. Mihai, G., A. Marian Aron, V. Haralambie, and A. Paljanos, "A study of mobile phone SAR levels modification in different experimental configurations under 2G and 3G communication standards," 2016 International Conference on Communications (COMM), 491-494, 2016.

8. Takei, R., T. Nagaoka, K. Saito, S. Watanabe, and M. Takahashi, "SAR variation due to exposure from a smartphone held at various positions near the torso," IEEE Transactions on Electromagnetic Compatibility, Vol. 59, No. 2, 747-753, 2017.

9. Cihangir, A., C. J. Panagamuwa, W. G. Whittow, G. Jacquemod, F. Gianesello, R. Pilard, and C. Luxey, "Dual-band 4G eyewear antenna and SAR implications," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 4, 2085-2089, 2017.

10. Derat, B., "Experimental study on the relationship between specific absorption rate and RF conducted power for LTE wireless devices," 2015 European Microwave Conference (EuMC), 746-748, 2015.

11. Oliveira, C., M. Mackowiak, and L. M. Correia, "Exposure assessment of smartphones and tablets," 2015 International Symposium on Wireless Communication Systems (ISWCS), 436-440, 2015.

12. International Commission on Non-Ionizing Radiation Protection, Health Physics, "Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz)," Health Phys., Vol. 74, No. 4, 494-522, 1998.

13. FCC, "Code of Federal Regulations CFR title 47, part 1.1310,", 2010.

14., "Standard for safety levels with respect to human exposure to radio frequency electromagnetic fields, 3 kHz to 300 GHz,", IEEE C95.1, 2005.

15. Hong, W., "Solving the 5G mobile antenna puzzle: Assessing future directions for the 5G mobile antenna paradigm shift," IEEE Micro. Mag., Vol. 18, No. 7, 86-102, Nov. 2017.

16., , https://www.ansys.com/-/media/ansys/corporate/resourcelibrary/techbrief/ab-ansys-hfss-forantenna- simulation.pdf.

17. Laakso, I., S. Tanaka, S. Koyama, V. De Santis, and A. Hirata, "Inter-subject variability in electric fields of motor cortical tDCS," Brain Stimulation, Vol. 8, No. 5, 906-913, Elsevier, 2015.

18., , http://niremf.ifac.cnr.it/tissprop/htmlclie/htmlclie.php.

19., , https://transition.fcc.gov/bureaus/oet/info/documents/bulletins/oet65/oet65.pdf.

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