Electrically Small, Wideband, Circularly Polarized, Inductive Grid-Array Metasurface Antenna

Lin, Q; Tang, MC; Li, M; Ziolkowski, RW

Electrically Small, Wideband, Circularly Polarized, Inductive Grid-Array Metasurface Antenna

Lin, Q Tang, MC Li, M Ziolkowski, RW

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2023, 71, (5), pp. 4546-4551
Issue Date:: 2023-05-01

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Field	Value	Language
dc.contributor.author	Lin, Q
dc.contributor.author	Tang, MC
dc.contributor.author	Li, M
dc.contributor.author	Ziolkowski, RW
dc.date.accessioned	2024-04-21T05:11:58Z
dc.date.available	2024-04-21T05:11:58Z
dc.date.issued	2023-05-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2023, 71, (5), pp. 4546-4551
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/178128
dc.description.abstract	A wideband, circularly polarized (CP), electrically small antenna (ESA) with two axial ratio (AR) poles is reported. The design is composed of a specially engineered L-shaped driven dipole, a near-field resonant parasitic (NFRP) crossed Egyptian axe dipole (EAD), and an NFRP inductive grid-array metasurface. The L-shaped driven dipole simultaneously excites two degenerate modes of the crossed-EAD with an intrinsic 90° phase shift to produce one AR pole. Similarly, it also effectively excites two orthogonal modes of the grid-array metasurface to generate the second AR pole. A wide AR bandwidth is achieved by pressing these two AR poles close together. The measured results agree well with their simulated ones. The measured impedance bandwidth, where $\vert S_{11}\vert < -10$ dB, ranges from 1.28 to 1.73 GHz (29.9%) and the 3-dB AR bandwidth ranges from 1.35 to 1.66 GHz (20.5%). Consequently, a broad 20.5% overlapping bandwidth, from 1.35 to 1.66 GHz, is obtained. The total dimensions of this ESA are $\pi \times $ ( $0.15\lambda b {0})^{2} \times 0.0029\lambda b{0} = 2.0\times 10^{-4} \lambda b {0}^{3}$ , where $\lambda b {0}$ is the wavelength of the lower frequency bound, 1.35 GHz, giving ka = $0.98.~\vphantom {^{\int }}$ Bidirectional electromagnetic fields are radiated with high radiation efficiency across the entire overlapping bandwidth.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation	http://purl.org/au-research/grants/arc/DP160102219
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation
dc.relation.isbasedon	10.1109/TAP.2023.3259800
dc.rights	info:eu-repo/semantics/restrictedAccess
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	Electrically Small, Wideband, Circularly Polarized, Inductive Grid-Array Metasurface Antenna
dc.type	Journal Article
utslib.citation.volume	71
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/Strength - GBDTC - Global Big Data Technologies
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	recently_added	*
dc.date.updated	2024-04-21T05:11:56Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	71
utslib.citation.issue	5

Abstract:

A wideband, circularly polarized (CP), electrically small antenna (ESA) with two axial ratio (AR) poles is reported. The design is composed of a specially engineered L-shaped driven dipole, a near-field resonant parasitic (NFRP) crossed Egyptian axe dipole (EAD), and an NFRP inductive grid-array metasurface. The L-shaped driven dipole simultaneously excites two degenerate modes of the crossed-EAD with an intrinsic 90° phase shift to produce one AR pole. Similarly, it also effectively excites two orthogonal modes of the grid-array metasurface to generate the second AR pole. A wide AR bandwidth is achieved by pressing these two AR poles close together. The measured results agree well with their simulated ones. The measured impedance bandwidth, where $\vert S_{11}\vert < -10$ dB, ranges from 1.28 to 1.73 GHz (29.9%) and the 3-dB AR bandwidth ranges from 1.35 to 1.66 GHz (20.5%). Consequently, a broad 20.5% overlapping bandwidth, from 1.35 to 1.66 GHz, is obtained. The total dimensions of this ESA are $\pi \times $ ( $0.15\lambda b {0})^{2} \times 0.0029\lambda b{0} = 2.0\times 10^{-4} \lambda b {0}^{3}$ , where $\lambda b {0}$ is the wavelength of the lower frequency bound, 1.35 GHz, giving ka = $0.98.~\vphantom {^{\int }}$ Bidirectional electromagnetic fields are radiated with high radiation efficiency across the entire overlapping bandwidth.

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http://hdl.handle.net/10453/178128