CPW Fed Textile UWB Antenna for IoT and Wearable Applications

Articles in Press

Document Type : Article

Authors

1 Department of Electronics & Communication Engineering, MNIT, Jaipur, Rajasthan, India

2 SP3 Technologies LLP, Surat, Gujarat, India

10.24200/sci.2025.64547.9070

Abstract

This article presents a compact circular-shaped patch Ultra-Wide Band (UWB) antenna for the Internet of Things (IoT) and wearable applications. The proposed antenna is excited by a Coplanar Waveguide (CPW) feed line with circular and dual I-shaped slots in the ground to improve the impedance bandwidth. The antenna presents maximum peak gain of 7.8 dB. The antenna has compact size of 25x24 mm2, it is simulated and fabricated on the Cordura textile substrate with 0.5 mm thickness. The antenna performance in free space and on the human body phantom is presented in terms of impedance bandwidth, Specific Absorption Rate (SAR), and radiation characteristics. The SAR is calculated on a hypothetical body phantom at three different spots to validate the specified limits by international organizations for human safety (IEEE Standards). The maximum SAR values observed for 10 g average body mass are 0.258, 0.232, and 0.367 W/Kg, at the back side of the body, arm, and leg, respectively. The investigated results of the antenna in simulation and measurement are confirm its candidacy for the IoT applications and body-worn devices.

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Scientia Iranica

Articles in Press, Accepted Manuscript
Available Online from 13 January 2025

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History

  • Receive Date: 03 June 2024
  • Revise Date: 14 October 2024
  • Accept Date: 13 January 2025

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