Design and Evaluation of a Flexible Circularly Polarized UWB Microstrip Textile Antenna for Wearable Applications

Authors

  • Sekhar M Assistant Professor, Department of Electronics and Communication Engineering, Vignan’s Foundation for Science, Technology, and Research, Guntur, Andhra Pradesh, India https://orcid.org/0009-0005-3174-762X
  • Kasukurthi Rama Krishna Assistant Professor, Department of Electronics and Communication Engineering, KKR&KSR Institute of Technology and Sciences(Autonomous), Guntur, Andhra Pradesh, India. https://orcid.org/0009-0005-3174-762X
  • Jalluri Jyothi Swaroop Assistant Professor, Department of Electronics and Communication Engineering, Sri Vasavi Institute of Engineering and Technology, Krishna District, Andhra Pradesh, India https://orcid.org/0009-0005-3174-762X

Keywords:

Flexible Antenna, Circularly Polarized, Ultra- Wideband (UWB),Textile-based Antenna

Abstract

A novel compact circularly polarized monopole antenna designed for wearable use is presented. This antenna, made from jean fabric, offers flexibility, lightweight properties, and seamless integration into clothing. It measures 25 × 30 × 1.4 mm³ in size. The circular polarization (CP) is beneficial for on-body communications as it enhances multipath resistance, reduces interference, and improves connectivity between sensor nodes. The CP is achieved through an asymmetric stepped L-shaped ground plane and slots incorporated into the radiator. The microstrip-fed hexagonal ring monopole antenna provides excellent impedance matching across a wide frequency range from 3.09 to 11 GHz. The simulated and measured results align closely, with an axial ratio bandwidth of less than 3 dB across the 3.4– 10 GHz range. The antenna demonstrates a gain of 2.8–4.4 dB and efficiency ranging from 65% to 82% within this frequency range. Flexibility testing confirms the antenna's adaptability, and the simulated Specific Absorption Rate (SAR) values comply with FCC regulations, making it well- suited for wearable technology.

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Published

2024-09-19

How to Cite

Sekhar M, Kasukurthi Rama Krishna, & Jalluri Jyothi Swaroop. (2024). Design and Evaluation of a Flexible Circularly Polarized UWB Microstrip Textile Antenna for Wearable Applications. Journal of Computational Analysis and Applications (JoCAAA), 33(05), 726–734. Retrieved from http://eudoxuspress.com/index.php/pub/article/view/609

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