Ultra-Wideband (UWB) Frequency-Reconfigurable Phased Array

Wei, G; He, Y; Ziolkowski, RW; Guo, YJ

Ultra-Wideband (UWB) Frequency-Reconfigurable Phased Array

Wei, G He, Y

Ziolkowski, RW Guo, YJ

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Publisher:: Institute of Electrical and Electronics Engineers (IEEE)
Publication Type:: Conference Proceeding
Citation:: 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting (AP-S/CNC-USNC-URSI), 2025, 00, pp. 2646-2649
Issue Date:: 2025-07-18

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Field	Value	Language
dc.contributor.author	Wei, G
dc.contributor.author	He, Y https://orcid.org/0009-0005-5206-4908
dc.contributor.author	Ziolkowski, RW
dc.contributor.author	Guo, YJ
dc.date	2025-07-13
dc.date.accessioned	2026-02-15T04:56:50Z
dc.date.available	2026-02-15T04:56:50Z
dc.date.issued	2025-07-18
dc.identifier.citation	2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting (AP-S/CNC-USNC-URSI), 2025, 00, pp. 2646-2649
dc.identifier.uri	http://hdl.handle.net/10453/193491
dc.description.abstract	This paper introduces an innovative ultra-wideband (UWB) frequency-reconfigurable tightly-coupled dipole array (FR-TCDA). It achieves high radiation efficiency and a wide beam-scanning range through a unique reconfigurable layer and a customized wide-angle impedance matching (WAIM) structure. The reconfigurable layer effectively converts out-of-phase ground-plane reflections into in-phase ones with minimal insertion loss, allowing seamless operation across two contiguous frequency bands. A prototype confirmed its two reconfigurable states yield two overlapping sub-bands that span $0.37-0.93 \text{GHz}$ and $0.85-5.85 \text{GHz}$, respectively, and jointly provide an overall combined 15.8:1 bandwidth covering 0.37-5.85 GHz with VSWR $<3$ and a radiation efficiency higher than 95 %. The WAIM structure is designed with dual-level double-sided capacitively loaded loops (DLDS-CLLs), enabling enhanced scanning performance with scan angles up to $\pm 70^{\circ}$ in the E-/Dplanes and $\pm 50^{\circ}$ in the H-plane. Its properties make this phased array well-suited for UWB applications requiring high radiation efficiency and broad scan volumes.
dc.language	en
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartof	2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting (AP-S/CNC-USNC-URSI)
dc.relation.ispartof	2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting (AP-S/CNC-USNC-URSI)
dc.relation.isbasedon	10.1109/ap-s/cnc-usnc-ursi55537.2025.11266460
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Ultra-Wideband (UWB) Frequency-Reconfigurable Phased Array
dc.type	Conference Proceeding
utslib.citation.volume	00
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
pubs.organisational-group	University of Technology Sydney/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Global Big Data Technologies Centre (GBDTC)
utslib.copyright.status	open_access	*
dc.date.updated	2026-02-15T04:56:49Z
pubs.finish-date	2025-07-18
pubs.publication-status	Published
pubs.start-date	2025-07-13
pubs.volume	00

Abstract:

This paper introduces an innovative ultra-wideband (UWB) frequency-reconfigurable tightly-coupled dipole array (FR-TCDA). It achieves high radiation efficiency and a wide beam-scanning range through a unique reconfigurable layer and a customized wide-angle impedance matching (WAIM) structure. The reconfigurable layer effectively converts out-of-phase ground-plane reflections into in-phase ones with minimal insertion loss, allowing seamless operation across two contiguous frequency bands. A prototype confirmed its two reconfigurable states yield two overlapping sub-bands that span $0.37-0.93 \text{GHz}$ and $0.85-5.85 \text{GHz}$, respectively, and jointly provide an overall combined 15.8:1 bandwidth covering 0.37-5.85 GHz with VSWR $<3$ and a radiation efficiency higher than 95 %. The WAIM structure is designed with dual-level double-sided capacitively loaded loops (DLDS-CLLs), enabling enhanced scanning performance with scan angles up to $\pm 70^{\circ}$ in the E-/Dplanes and $\pm 50^{\circ}$ in the H-plane. Its properties make this phased array well-suited for UWB applications requiring high radiation efficiency and broad scan volumes.

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http://hdl.handle.net/10453/193491