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Investigation into Low SAR PIFA Antenna and Design a Very Low SAR U-slot Antenna using Frequency Selective Surface for cell-phones and Wearable Applications

Kourosh Javadi, Nader Komjani

Abstract


There are very important questions. “Do Electromagnetic waves have irreparable effects on human or not?” “Are there any relation between cancer and waves?” and finally “what should we do to be safe?”. In the present article, these questions will be answered simply and professionally. First of all, Specific Absorption rate (SAR) is define then L-Slot and U-slot antenna is designed and simulated using cell-phones and wearable applications, operating at  and  consist of GSM900 and GSM1800. Standard frequency band width for the first and second band is  and  for uplink and downlink and in the present research these numbers are obtained. The SAR of each antenna is measured and is compared with each other. Thanks to design of antenna, The SAR of U-Slot antenna is very low and it is almost stimulated  and this sentence means this antenna is anti-cancer. Finally, Some SRR unit-cells are designed and when they are used in structure, SAR will be more decrease. Last SAR value is  and  for each bands .In the last table, There are some comparison between different creditable references and present article SAR reduction is acceptable and it is near to  percentage.

Keywords


PIFA Antenna; U-Slot Antenna; L-Slot Antenna; Meta-Materials; SRR Surfaces; SAR (Specific Absorption Rate).

References


Lin, James C. "Health effects-effects of cell-phone radiation on lymphoma-prone mice." IEEE microwave magazine 4, no. 2 (2003): 22-28.

Sultan, K. S., H. H. Abdullah, E. A. Abdallah, and E. A. Hashish. "Low-SAR, miniaturized printed antenna for mobile, ISM, and WLAN services." IEEE antennas and wireless propagation letters 12 (2013): 1106-1109.

IEEE Standard for safety levels with respect to human exposure to radiofrequency electromagnetic fields, 3 KHz to 300GHz, IEEE Standard C95.1, 1999.

International commission on Non-lonizing radiation protection, “guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz),” Health Physics, 74, 1998,pp. 494-522.

IEEE Standard for Safety Levels with Respect to Human Exposure to Radiofrequency Electromagnetic Fields, 3 kHz to300 GHz, IEEE Standard C95.1, 2005.

Kiourti, Asimina, and Konstantina S. Nikita. "A review of implantable patch antennas for biomedical telemetry: Challenges and solutions [wireless corner]." IEEE Antennas and Propagation Magazine 54, no. 3 (2012): 210-228.

M.H.Repacholi,A.basten,V.Gebski,D.Noonan,J.Finnie,andW.Harris,”Lymphom-asin E mu – Pim1 transgenic mice exposed to pulsed 900 MHz electromagnetic fields”,Radiat.Res.,vol.147, pp.631-640,1997.

Yeh, Shih‐Huang, Shyh‐Tirng Fang, and Kin‐Lu Wong. "Dual‐band shorted patch antenna for dual ISM‐band application." Microwave and Optical Technology Letters 32, no. 1 (2002): 79-80.

D. Singh1, *, A. Kumar2, S. Meena1, and V. Agarwala2”ANALYSIS OF FREQUENCY SELECTIVE SURFACES FOR RADAR ABSORBING MATERIALS” Progress In Electromagnetic Research B, Vol. 38, 297–314, 2012.

A. Cabedo,J. Anguera, C. Picher, M. Ribó, and C. Puente. "Multiband handset antenna combining a PIFA, slots, and ground plane modes." Antennas and Propagation, IEEE Transactions on 57,no.9: 2526-2533, 2009.

A. H. Kusuma , A.-F. Sheta I. M. Elshafiey, M. A. S. Alkanhal , S. Aldosari , and S. A. Alshebeili,. "Low SAR antenna design for modern wireless mobile terminals." In STS International Conference. 2010.

A. H. Kusuma , A.-F. Sheta, I. M. Elshafiey, Z. Siddiqui, M. A. S. Alkanhal, S. Aldosari, S. A. Alshebeili, and S. F. Mahmoud, "A new low SAR antenna structure for wireless handset applications," Progress In Electromagnetics Research, Vol. 112, 23-40, 2011.

S.Y. Lin, Y.C. Lin, Y.R. Cheng, and J.R. Wu. "Folded wire antenna with low SAR." In Microwave Conference Proceedings (APMC), 2011 AsiaPacific, pp. 638-641. IEEE, 2011.

Jegadeesam.S , Zahra Mansouri “Ultra Wideband PIFA Antenna with supporting GSM and Wimax Mobile Phone Applications “ 2015 Fifth International Conference on Advanced Computing , Communication Technologies.

J. L. T. Garzon, A. A. de Salles, A. C. O. Pedra, S. Severo “T-Slot PIFA with excitation of the ground plane resonant modes and considerations of the interaction between antenna, mobile handset and user's head “2013 IEEE.


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DOI: 10.28991/ijse-01117

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Copyright (c) 2017 Kourosh Javadi, Nader Komjani