A Compact Button Antenna with Dual-Band and Dual-Polarization for Wearable Body Area Networks.

Xue-Ping Li, Zhen-Yong Dong, Xue-Qing Yang, Meng-Bing Yang, Xiao-Ya Li, Xi-Qiao Wu, Wei Li

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Article in Micromachines, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Xue-Ping LiSchool of Optoelectronic Engineering, Henan Normal University, Xinxiang 453600, China.

Zhen-Yong DongSchool of Optoelectronic Engineering, Henan Normal University, Xinxiang 453600, China.

Xue-Qing YangSchool of Optoelectronic Engineering, Henan Normal University, Xinxiang 453600, China.

Meng-Bing YangSchool of Optoelectronic Engineering, Henan Normal University, Xinxiang 453600, China.

Xiao-Ya LiSchool of Optoelectronic Engineering, Henan Normal University, Xinxiang 453600, China.

Xi-Qiao WuSchool of Optoelectronic Engineering, Henan Normal University, Xinxiang 453600, China.

Wei LiSchool of Optoelectronic Engineering, Henan Normal University, Xinxiang 453600, China.

Funding

College Students' Innovation and Entrepreneurship Training Program S202510476056Foundation for University Key Young Teacher of Henan Grant No. 2023GGJS035Science Foundation for the Excellent Youth Scholars of Henan Province Grant No. 252300421220Scientific and Technological Innovation Program for Universities in Henan Province Grant No.25HASTIT026

6 · The paper itself

Abstract

This paper presents a compact, dual-band, dual-polarization button antenna for Wireless Body Area Networks (WBANs) that operates in the 2.45 GHz and 5.8 GHz Industrial, Scientific, and Medical (ISM) bands. The antenna is engineered in the lower band from 2.33 to 2.8 GHz (18.3% fractional bandwidth) as a linearly polarized, top-loaded monopole, which provides an omnidirectional radiation pattern for on-body communication. In contrast, it functions as a cross-dipole in the higher band, achieving a fractional bandwidth of 66.4% (4.8-9.57 GHz) and a 3 dB axial ratio (AR) bandwidth of 57.4%, producing a broadside radiation with circular polarization for off-body communications. Prototype measurements in both free-space and on-body settings confirm the antenna's robust performance, successfully validating its dual-band operation, dual-polarization characteristics. Furthermore, Specific Absorption Rate (SAR) simulations conducted on a human model demonstrate that the values are significantly below the established safety limits, confirming the antenna's suitability for practical wearable applications.

Indexed as

button antennascircularly polarized antennawearable antennawireless body-area networks (WBANs)

Identifiers

PMID41597809

DOI10.3390/mi17010028

PMCPMC12843944

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LicenceCC BY

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.