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E-textile slot antenna with spurious mode suppression and low SAR for medical wearable applications

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  • Arpan Shah
  • Piyush Patel

Abstract

In this paper, electronic textile (E-textile) antenna design, with spurious mode suppression and low specific absorption rate (SAR), at a nearest distance of 1 mm from on-body phantom is investigated. The textile antenna is designed using a denim substrate material with conductive patch as a radiating element. The slots are introduced on the patch for spurious mode suppression so that external radio frequency components can be integrated with textile antenna without hampering the efficiency of the body area network system. The measured bandwidth of the proposed antenna is 100 MHz (2.39–2.49 GHz) in the 2.45 GHz ISM frequency band with broadside radiation pattern. The radiation pattern at spurious mode is suppressed by 5 dB without any change in the resonance frequency of fundamental mode. Besides, considering human safety for wearable devices, the SAR values average over 1 g of tissue are 0.208, 0.106 and 0.087 W/Kg at a distance of 1, 3 and 5 mm from on-body phantom, respectively.

Suggested Citation

  • Arpan Shah & Piyush Patel, 2021. "E-textile slot antenna with spurious mode suppression and low SAR for medical wearable applications," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 35(16), pages 2224-2238, November.
    • Handle: RePEc:taf:tewaxx:v:35:y:2021:i:16:p:2224-2238
    DOI: 10.1080/09205071.2021.1934905
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