Flexible Hybrid-Substrate Dual-Band Dual-Mode Wearable Antenna

Samal, PB; Chen, SJ; Fumeaux, C

Flexible Hybrid-Substrate Dual-Band Dual-Mode Wearable Antenna

Samal, PB Chen, SJ Fumeaux, C

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2024, 72, (2), pp. 1286-1296
Issue Date:: 2024-02-01

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Field	Value	Language
dc.contributor.author	Samal, PB
dc.contributor.author	Chen, SJ
dc.contributor.author	Fumeaux, C
dc.date.accessioned	2024-05-30T15:34:15Z
dc.date.available	2024-05-30T15:34:15Z
dc.date.issued	2024-02-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2024, 72, (2), pp. 1286-1296
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/179347
dc.description.abstract	A flexible dual-band dual-mode wearable antenna with a hybrid dielectric substrate is proposed for off- and on-body communications. It operates at two industrial, scientific, and medical (ISM) bands, namely, with a broadside radiation at 2.45 GHz and an omnidirectional radiation pattern at 5.8 GHz. A hybrid substrate based on flexible polydimethylsiloxane (PDMS) and PF4-foam materials is introduced to overcome the low radiation efficiency in both modes due to the PDMS substrate. The hybrid substrate is realized by replacing the PDMS substrate areas exhibiting high power loss density with a low-loss PF4-foam material. This reduces the dielectric loss and improves the radiation efficiency by an average value of 17% and 20% in the 2.45- and 5.8-GHz ISM bands, respectively. Such a technique extracts the desirable properties of two dielectric materials and combines them to achieve improved antenna performance. The common properties of both materials include high flexibility, resilience, water resistance, and robustness. Importantly, the hybrid substrate offers an optimal trade-off between antenna size and radiation efficiency. In comparison with a PF4-foam-only counterpart, the proposed hybrid substrate demonstrates an antenna area reduction of 19%, while the PDMS-only substrate design exhibits an antenna area reduction of 37%. In addition, the design methodology of the dual-mode antennas allows for independent control of the resonances, providing a high degree of design flexibility.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation
dc.relation.isbasedon	10.1109/TAP.2023.3332432
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.subject.classification	4006 Communications engineering
dc.subject.classification	4008 Electrical engineering
dc.subject.classification	4009 Electronics, sensors and digital hardware
dc.title	Flexible Hybrid-Substrate Dual-Band Dual-Mode Wearable Antenna
dc.type	Journal Article
utslib.citation.volume	72
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2024-05-30T15:34:12Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	72
utslib.citation.issue	2

Abstract:

A flexible dual-band dual-mode wearable antenna with a hybrid dielectric substrate is proposed for off- and on-body communications. It operates at two industrial, scientific, and medical (ISM) bands, namely, with a broadside radiation at 2.45 GHz and an omnidirectional radiation pattern at 5.8 GHz. A hybrid substrate based on flexible polydimethylsiloxane (PDMS) and PF4-foam materials is introduced to overcome the low radiation efficiency in both modes due to the PDMS substrate. The hybrid substrate is realized by replacing the PDMS substrate areas exhibiting high power loss density with a low-loss PF4-foam material. This reduces the dielectric loss and improves the radiation efficiency by an average value of 17% and 20% in the 2.45- and 5.8-GHz ISM bands, respectively. Such a technique extracts the desirable properties of two dielectric materials and combines them to achieve improved antenna performance. The common properties of both materials include high flexibility, resilience, water resistance, and robustness. Importantly, the hybrid substrate offers an optimal trade-off between antenna size and radiation efficiency. In comparison with a PF4-foam-only counterpart, the proposed hybrid substrate demonstrates an antenna area reduction of 19%, while the PDMS-only substrate design exhibits an antenna area reduction of 37%. In addition, the design methodology of the dual-mode antennas allows for independent control of the resonances, providing a high degree of design flexibility.

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http://hdl.handle.net/10453/179347