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A dual-band dual-polarized wearable antenna for two operating modes of WBAN application

Published online by Cambridge University Press:  06 August 2025

Yuhui Ren Open the ORCID record for Yuhui Ren [Opens in a new window] ,
Jiaxin Lv ,
Kemeng Yan ,
Wei Bai ,
Feng Cui ,
Ke Li ,
Fuwei Wang Open the ORCID record for Fuwei Wang [Opens in a new window]  and
Handong Wu
Yuhui Ren*
Affiliation:
School of Information Science and Technology, Northwest University, Xi’an, China
Jiaxin Lv
Affiliation:
School of Information Science and Technology, Northwest University, Xi’an, China
Kemeng Yan
Affiliation:
School of Information Science and Technology, Northwest University, Xi’an, China
Wei Bai
Affiliation:
Xi’an HengDa Microwave Technology Development Co., Ltd, Xi’an, China
Feng Cui
Affiliation:
Xi’an HengDa Microwave Technology Development Co., Ltd, Xi’an, China
Ke Li
Affiliation:
School of Information Science and Technology, Northwest University, Xi’an, China
Fuwei Wang
Affiliation:
School of Information Science and Technology, Northwest University, Xi’an, China
Handong Wu
Affiliation:
Xi’an HengDa Microwave Technology Development Co., Ltd, Xi’an, China
*
Corresponding author: Yuhui Ren; Email: ryhui@nwu.edu.cn
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Abstract

A dual-band dual-polarized wearable antenna that applies to two different operating modes of wireless body area networks is proposed in this letter. The antenna radiates simultaneously in the ISM band at 2.45 and 5.8 GHz. It consists of a rigid button-like radiator and a flexible fabric radiator. At 2.45 GHz, an omnidirectional circularly polarized pattern is radiated by the flexible radiator, which is suitable for the on-body communication. At the same time, a linearly polarized broadside pattern for off-body communication is generated by button radiator at 5.8 GHz. The antenna has been validated in free space and human body environments. The impedance bandwidth at 2.45 and 5.8 GHz are 5% and 35%, and the gain is measured to be 0.15 and 5.95 dBi, respectively. Furthermore, the specific absorption rates are simulated. At 2.45 and 5.8 GHz, the results averaged over 1 g of body tissue are 0.128 and 0.055 W/kg. The maximum value at both bands is below the IEEE C95.3 standard of 1.6 W/kg.

Keywords

on-body and off-body communicationwearable antennawireless body area networks

Information

Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 7
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Copyright
© The Author(s), 2025. Published by Cambridge University Press in association with The European Microwave Association.

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