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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2026-08-23
Flexible Conformal Textile-Based ETSRP Wearable Antenna for Wireless and Biomedical Applications
By
Yarram Uma Maheswari,

    Dr. Yarram Uma Maheswari

    School of Electronics Engineering

    VIT-AP University

    India

    Homepage

Bappadittya Roy

    Dr. Bappadittya Roy

    School of Electronics Engineering

    VIT-AP University

    India

    Homepage

Progress In Electromagnetics Research C, Vol. 172, 480-494, 2026
doi:10.2528/PIERC26060405 | Google Scholar

Abstract
This paper presents a low-profile, flexible, and wideband conformal wearable antenna for biomedical and wireless applications, including Internet of Things (IoT). The proposed antenna is based on an edge-truncated and slotted rectangular patch structure (ETSRP) developed on a jeans textile substrate, with compact overall dimensions of 0.163×0.269×0.0063. The antenna offers peak gain of 6.3 dBi with an impedance bandwidth of 2.32 GHz to 8.84 GHz, corresponding to a fractional bandwidth of 116.5%, with a reflection coefficient (S11) of -42.4 dB in the ISM bands. The antenna's performance was evaluated using a human phantom and showed minor frequency detuning across different placement conditions. The specific absorption rate (SAR) was evaluated at 2.45 GHz and 5.8 GHz, with values of 0.7 W/kg and 0.8 W/kg, respectively, which are within accepted safety limits. The measured results were in good agreement with the simulated results in terms of impedance bandwidth, gain, and resonance characteristics. The proposed textile antenna offers wideband operation, low SAR, and compact size, making it suitable for wearable biomedical devices and IoT-based on-body communication systems.
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Citation
Yarram Uma Maheswari, and Bappadittya Roy, "Flexible Conformal Textile-Based ETSRP Wearable Antenna for Wireless and Biomedical Applications," Progress In Electromagnetics Research C, Vol. 172, 480-494, 2026.
doi:10.2528/PIERC26060405
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