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SAR reduction of wearable SWB antenna using FSS for wireless body area network applications

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Abstract

A flexible Super Wide Band (SWB) antenna with a frequency selective surface (FSS) reflector is presented to reduce the specific absorption rate (SAR) and to improve the gain of the proposed antenna for Wireless Body Area Network (WBAN) Applications. A tapered feed circular monopole antenna with arrowhead-shaped slot structure is designed on Jeans substrate with a compact physical dimension of 22 × 28 × 0.3 mm3. The use of a Jeans substrate makes the proposed antenna thin and highly flexible. The impedance bandwidth of the proposed antenna is 28 GHz (3.2–31.2 GHz) with a peak gain of 5.61 dBi. Since the antenna is intended for body wearable applications, its performance has been observed by placing the antenna near a human body phantom. This placement increased the SAR and reduced the gain. Further to reduce the SAR and to enhance the gain of the proposed SWB antenna a novel FSS reflector, which consists of a 2 × 2 array of elements, is located at a distance of 1.138 λ (13 mm) below the proposed antenna. In order to reduce the SAR, the FSS array structure is placed between the antenna and the human’s forearm. This placement reduced the specific absorption rate (SAR) by more than 95%. To make the proposed antenna with FSS structure user agreeable, the gap between the antenna and FSS is filled by polyethylene foam, with a dielectric constant of 2.26, a loss tangent of 0.00031, and a density of 2.2 lb. Further, there is also a 3–4 dBi improvement in antenna gain after the application of the FSS. The proposed antenna has great potential to be applied in human microwave imaging due to its immense wide bandwidth, high gain and compact size, and low SAR value.

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References

  1. Hall Peter S and Hao Y 2012 Antennas and Propagation for Body-Centric Wireless Communications. 2nd edn. Artech House, London, UK, pp 1–7

    Google Scholar 

  2. Liu H, Wang J and Luo X 2017 Flexible and compact AMC based antenna for WBAN applications. In: 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, pp. 587–588

  3. Naik K K, Teja S C S, Sailaja B V and Sri P A 2020 Design of flexible parasitic element patch antenna for biomedical application. Progress Electromag. Res. M 94: 143–153

    Article  CAS  Google Scholar 

  4. Shakhirul M S, Jusoh M, Sahadah A, Nor C M and Rahim H A 2014 Embroidered wearable textile antenna on bending and wet performances for UWB reception. Microw. Opt. Technol. Lett. 56: 2158–2163

    Article  Google Scholar 

  5. Hassan S and Shehab S H 2015 Evaluation of an Ultra Wideband (UWB) textile antenna in the vicinity of human body model for WBAN applications. In: 2015 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE). IEEE, pp. 195–198

  6. Roy A, Biswas A K, Nandi A and Basu B 2023 Ultra-wideband flexible wearable antenna with notch characteristics for WLAN applications. Progress Electromag. Res. C 129: 143–155

    Article  Google Scholar 

  7. Kavitha A and Swaminathan J N 2019 Design of flexible textile antenna using FR4, jeans cotton and teflon substrates. Microsyst. Technol. 25: 1311–1320

    Article  CAS  Google Scholar 

  8. Jalil M E B, Abd Rahim M K, Samsuri N A, Murad N A, Majid H A and Kamardin K et al. 2013 Fractal koch multiband textile antenna performance with bending, wet conditions and on the human body. Progress Electromag. Res. 140: 633–652

    Article  Google Scholar 

  9. Varma S, Sharma S, John M, Bharadwaj R, Dhawan A and Koul S K 2021 Design and performance analysis of compact wearable textile antennas for IoT and body-centric communication applications. Int. J. Antennas Propag. 1–12

  10. Washington D C 2002 First Report and Order on Ultra-Wideband Technology. FCC, USA, pp 2–48

    Google Scholar 

  11. Yu W, Li W, Chang D C and Li Y 2014 Small antennas: miniaturization techniques and applications. Int. J. Antennas Propag. 1–7

  12. Pandhare R A, Abegaonkar M P and Dhote C 2022 UWB antenna with novel FSS reflector for the enhancement of the gain and bandwidth. Int. J. Antennas Propag. 14: 1353–1368

    Google Scholar 

  13. Chen K R, Sim C Y D and Row J S 2011 A compact monopole antenna for super wideband applications. IEEE Antennas Wirel. Propag. Lett. 10: 488–491

    Article  ADS  Google Scholar 

  14. Tran D, Aubry P, Szilagyi A, Lager I E, Yarovyi O and Ligthart L P 2010 On the design of a super wide band antenna. Ultra Wideband 17: 399–426

  15. Mahmud S, Dey S and Saha N 2012 Super wide band wearable antenna: assessment of the conformal characteristics in terms of impedance matching and radiation properties. In: 2012 International Symposium on Antennas and Propagation (ISAP). IEEE, pp. 563–566

  16. Santas J G, Alomainy A and Yang H 2007 Textile antennas for on-body communications: techniques and properties. In: 2nd European Conference on Antennas and Propagation (EuCAP 2007). Institution of Engineering and Technology, pp. 537–537

  17. Mollah G, Shikder K and Arifin F 2020 Design and evaluation of a SWB decagonal patch textile antenna for WBAN applications. In: 2020 IEEE Region 10 Symposium (TENSYMP). IEEE, pp. 1420–1423

  18. Hasan Md R, Riheen M A, Sekhar P and Karacolak T 2020 Compact CPW-fed circular patch flexible antenna for super-wideband applications. IET Microw. Antennas Propag. 14: 1069–1073

    Article  Google Scholar 

  19. Dey S, Arefin M S and Karmakar N C 2021 Design and experimental analysis of a novel compact and flexible super wide band antenna for 5G. IEEE Access 9: 46698–46708

    Article  Google Scholar 

  20. Yalduz H, Tabaru T E, Kilic V T and Turkmen M 2020 Design and analysis of low profile and low SAR full-textile UWB wearable antenna with metamaterial for WBAN applications. AEU Int. J. Electron. Commun. 126: 153465

    Article  Google Scholar 

  21. Ray K P and Ranga Y 2007 Ultrawideband printed elliptical monopole antennas. IEEE Trans. Antennas Propag. 55: 1189–1192

    Article  ADS  Google Scholar 

  22. Ray K P and Tiwari S 2010 Ultra wideband printed hexagonal monopole antennas. IET Microw. Antennas Propag. 4: 437–445

    Article  Google Scholar 

  23. Afridi A, Ullah S, Khan S, Ahmed A, Khalil A H and Tarar M A 2013 Design of dual band wearable antenna using metamaterials. J. Microw. Power Electromag. Energy 47: 126–137

    ADS  Google Scholar 

  24. Habibovic P and Barralet J E 2011 Bioinorganics and biomaterials: bone repair. Acta Biomateralia 7: 3013–3026

    Article  CAS  Google Scholar 

  25. Fuchs R K, Thompson W R and Warden S J 2019 Bone biology. In: Bone Repair, Biomaterials. Elsevier, pp. 15–52

  26. Hasgall PA, Di Gennaro F, Baumgartner C, Neufeld E, Lloyd B, Gosselin MC, Payne D, Klingenböck A, Kuster N 2022 IT’IS Database for thermal and electromagnetic parameters of biological tissues. https://itis.swiss/virtual-population/tissue-properties/overview/

  27. NadhPrudhvi B, Madhav B T P, Kumar Siva M, Rao Venkateswara M and Anilkumar T 2019 Circular ring structured ultra-wideband antenna for wearable applications. Int. J. RF Microw. Comput. Aided Eng. 29: e21580

    Article  Google Scholar 

  28. Bhattacharya A, Dasgupta B and Jyoti R 2021 A simple frequency selective surface structure for performance improvement of ultra-wideband antenna in frequency and time domains. Int. J. RF Microw. Comput. Aided Eng. 31: e22857

    Article  Google Scholar 

  29. Pandhare R A, Abegaonkar M P and Dhote C 2022 High gain wideband and multi-band on-demand reconfigurable antenna for modern wireless application. Int. J. Microw. Wirel. Technol. 15: 649–664

    Article  Google Scholar 

  30. Blattenberger K 2019 Dielectric Constant, Strength, & Loss Tangent, RF cafe.[online] Rfcafe. Com

  31. Pandhare R A, Abegaonkar M P and Dhote C 2022 UWB antenna with novel FSS reflector for the enhancement of the gain and bandwidth. Int. J. Microw. Wirel. Technol. 14: 1353–1368

    Article  Google Scholar 

  32. Sugumaran B, Balasubramanian R and Palaniswamy S K 2021 Reduced specific absorption rate compact flexible monopole antenna system for smart wearable wireless communications. Eng. Sci. Technol. Int. J. 24: 682–693

    Google Scholar 

  33. Pandhare R A, Abegaonkar M P and Dhote C 2022 High gain frequency reconfigurable multifunctional antenna for modern wireless and mobile communication systems. Int. J. RF Microw. Comput. Aided Eng. 32: e23385

    Article  Google Scholar 

  34. Kumkhet B, Rakluea P, Wongsin N, Sangmahamad P, Thaiwirot W, Mahatthanajatuphat C, Chudpooti N. 2023 SAR reduction using dual band EBG method based on MIMO wearable antenna for WBAN applications. AEU Int. J. Electron. Commun. 160: 154525

    Article  Google Scholar 

  35. Wang M, Yang Z, Wu J, Bao J, Liu J, Cai L, Dang T, Zheng H, Li E. 2018 Investigation of SAR reduction using flexible antenna with metamaterial structure in wireless body area network. IEEE Trans. Antennas Propag. 66: 3076–3086

    Article  ADS  Google Scholar 

  36. Ahmad A, Faisal F, Ullah S and Choi D Y 2022 Design and SAR analysis of a dual band wearable antenna for WLAN applications. Appl. Sci. 12: 9218

    Article  CAS  Google Scholar 

  37. Zhang HH, Gong LF, Liu XZ, Xu YX, Cheng GS, Liu Y, Shi GM, Zheng C, Han YJ 2023 Design of low-SAR and high on-body efficiency tri-band smartwatch antenna utilizing the theory of characteristic modes of composite PEC-lossy dielectric structures. IEEE Trans. Antennas Propag. 71: 1913–1918

    Article  ADS  Google Scholar 

  38. Kissi C, Särestöniemi M, Kumpuniemi T, Myllymäki S, Sonkki M, Srifi MN, Jantunen H, Pomalaza-Raez C 2019 Reflector-backed antenna for UWB medical applications with on-body investigations. Int. J. Antennas Propag. 1–17

  39. Standard, A R I B 1998 Standard Specific Absorption Rate (SAR) Estimation for Cellular Phone, ARIB STDT56, Version 1.0, pp. 1–73

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  1. Department of Electronics and Communication Engineering, Indian Institute of Information Technology, Nagpur, India

    DIPIKA SAGNE & RASHMI A PANDHARE

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  1. DIPIKA SAGNE
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Correspondence to DIPIKA SAGNE.

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SAGNE, D., PANDHARE, R.A. SAR reduction of wearable SWB antenna using FSS for wireless body area network applications. Sādhanā 49, 76 (2024). https://doi.org/10.1007/s12046-024-02427-w

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