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Machine learning enabled compact flexible full ground UWB antenna for wearable applications

Published online by Cambridge University Press:  31 October 2024

Alladi Praveena Open the ORCID record for Alladi Praveena [Opens in a new window] ,
Govindaswamy Umamaheswari ,
Jayant Kumar Rai  and
Pinku Ranjan Open the ORCID record for Pinku Ranjan [Opens in a new window]
Alladi Praveena
Affiliation:
Department of Electronics and Communication Engineering, PSG College of Technology, Coimbatore, India
Govindaswamy Umamaheswari
Affiliation:
Department of Electronics and Communication Engineering, PSG College of Technology, Coimbatore, India
Jayant Kumar Rai
Affiliation:
Department of Electrical and Electronics Engineering, ABV Indian Institute of Information Technology and Management, Gwalior, India
Pinku Ranjan*
Affiliation:
Department of Electrical and Electronics Engineering, ABV Indian Institute of Information Technology and Management, Gwalior, India
*
Corresponding author: Pinku Ranjan; Email: [email protected]
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Abstract

This work introduces a novel compact ultra-wideband (UWB) antenna designed for wearable applications, employing a bioinspired structure and machine learning (ML) techniques to achieve exceptional performance in the 3.10–10.42 GHz range. The antenna is fabricated by positioning conductive fabric on a polydimethylsiloxane polymer of 1 mm thickness to augment high flexibility and durability. Additionally, it pioneers integrating a complete ground plane to mitigate back radiation toward the human body, presenting a compact (35.5 × 30.5 × 1 mm3) UWB antenna design compliant with IEEE 802.15.6 standards. The design methodology includes using bandwidth enhancement techniques such as chamfering edges, slots, and adding stubs in the feed, along with applying ML to optimize the antenna’s dimensions for desired return loss characteristics. The proposed antenna demonstrates exceptional resilience to human body loading and physical deformation. The simulation and measurement results have good agreement. The K-nearest neighbour method beat the other ML algorithms maximum accuracy of 99.62% to predict the S11. According to the author’s best knowledge, this is the first compact UWB antenna with full ground specified by IEEE.802.15.6 with ML reported.

Keywords

flexible antennamachine learningPoly-dimethyl siloxane (PDMS)wearable applicationsultra-wideband
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 16 , Issue 8 , October 2024 , pp. 1303 - 1315
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Copyright
© The Author(s), 2024. Published by Cambridge University Press in association with The European Microwave Association.

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