Use of Narrower Reflection-Canceling Slots to Design Linearly Polarized Radial Line Slot Arrays with Improved Radiation Performance

Koli, MNY; Afzal, MU; Esselle, KP; Mehta, A

Use of Narrower Reflection-Canceling Slots to Design Linearly Polarized Radial Line Slot Arrays with Improved Radiation Performance

Koli, MNY Afzal, MU Esselle, KP Mehta, A

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Publisher:: Institute of Electrical and Electronics Engineers
Publication Type:: Journal Article
Citation:: IEEE Antennas and Wireless Propagation Letters, 2021, 20, (12), pp. 2275-2279
Issue Date:: 2021-12-01

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Field	Value	Language
dc.contributor.author	Koli, MNY
dc.contributor.author	Afzal, MU
dc.contributor.author	Esselle, KP
dc.contributor.author	Mehta, A
dc.date.accessioned	2022-03-15T03:06:50Z
dc.date.available	2022-03-15T03:06:50Z
dc.date.issued	2021-12-01
dc.identifier.citation	IEEE Antennas and Wireless Propagation Letters, 2021, 20, (12), pp. 2275-2279
dc.identifier.issn	1536-1225
dc.identifier.issn	1548-5757
dc.identifier.uri	http://hdl.handle.net/10453/155237
dc.description.abstract	In linearly polarized (LP) radial line slot arrays (RLSAs), reflection canceling slots (RCSs) are used in addition to the radiating slots (RSs) to reduce the return loss. The densely populated slotted RLSA apertures present the challenge of avoiding physical overlap between the RCSs and RSs. A solution to displace RCSs from their optimal position complicates the design and makes it less predictable. A design presented here addresses this issue using narrower RCSs on the same current-flow lines as their corresponding RSs. A high-gain LP RLSA antenna with diameter 12 λ0 was designed, fabricated, and tested using the proposed strategy. The measured prototype demonstrated a wide matching bandwidth of 74.3%. The antenna achieved a maximum gain of 28.3 dBi at the operating frequency of 17 GHz, and a 3 dB gain bandwidth of 6.3%. At this frequency, it has an aperture efficiency of 51%, a total efficiency of 95.3% along with high cross-polar discrimination, which is more than 70 dB in the direction of the beam peak.
dc.language	English
dc.publisher	Institute of Electrical and Electronics Engineers
dc.relation.ispartof	IEEE Antennas and Wireless Propagation Letters
dc.relation.isbasedon	10.1109/LAWP.2021.3107138
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Use of Narrower Reflection-Canceling Slots to Design Linearly Polarized Radial Line Slot Arrays with Improved Radiation Performance
dc.type	Journal Article
utslib.citation.volume	20
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	*
pubs.consider-herdc	false
dc.date.updated	2022-03-15T03:06:47Z
pubs.issue	12
pubs.publication-status	Published
pubs.volume	20
utslib.citation.issue	12

Abstract:

In linearly polarized (LP) radial line slot arrays (RLSAs), reflection canceling slots (RCSs) are used in addition to the radiating slots (RSs) to reduce the return loss. The densely populated slotted RLSA apertures present the challenge of avoiding physical overlap between the RCSs and RSs. A solution to displace RCSs from their optimal position complicates the design and makes it less predictable. A design presented here addresses this issue using narrower RCSs on the same current-flow lines as their corresponding RSs. A high-gain LP RLSA antenna with diameter 12 λ0 was designed, fabricated, and tested using the proposed strategy. The measured prototype demonstrated a wide matching bandwidth of 74.3%. The antenna achieved a maximum gain of 28.3 dBi at the operating frequency of 17 GHz, and a 3 dB gain bandwidth of 6.3%. At this frequency, it has an aperture efficiency of 51%, a total efficiency of 95.3% along with high cross-polar discrimination, which is more than 70 dB in the direction of the beam peak.

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http://hdl.handle.net/10453/155237