A Class of Extremely Wideband Resonant Cavity Antennas with Large Directivity-Bandwidth Products

Hashmi, RM; Esselle, KP

A Class of Extremely Wideband Resonant Cavity Antennas with Large Directivity-Bandwidth Products

Hashmi, RM Esselle, KP

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2016, 64, (2), pp. 830-835
Issue Date:: 2016-02-01

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Field	Value	Language
dc.contributor.author	Hashmi, RM
dc.contributor.author	Esselle, KP
dc.date.accessioned	2022-08-11T23:04:46Z
dc.date.available	2022-08-11T23:04:46Z
dc.date.issued	2016-02-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2016, 64, (2), pp. 830-835
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/159985
dc.description.abstract	Extremely wideband resonant cavity antennas (RCAs) with large directivity-bandwidth products (DBPs) are presented. Their distinct feature is a single-slab superstrate that has a permittivity gradient in the directions transverse to the antenna axis. The application of such a superstrate in a single-feed RCA improves the DBP by a factor of three or more as compared with superstrates composed of uniform dielectric slabs. Their very small area enables an antenna designer to achieve unprecedented figures of DBP per unit area, from a simple planar antenna. Prototype RCAs have been fabricated and measurements have validated the concept. A measured 3-dB directivity bandwidth of 52.9% was demonstrated with a measured directivity of 16.4 dBi for an RCA that has a very small total footprint area of 1.54 λ0/2 at the lowest operating frequency (2.84λ0,c/2 at the center frequency). This represents an increase of 90% over the previous best measured RCA directivity bandwidth of 28%.
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.2015.2511801
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	A Class of Extremely Wideband Resonant Cavity Antennas with Large Directivity-Bandwidth Products
dc.type	Journal Article
utslib.citation.volume	64
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	2022-08-11T23:04:46Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	64
utslib.citation.issue	2

Abstract:

Extremely wideband resonant cavity antennas (RCAs) with large directivity-bandwidth products (DBPs) are presented. Their distinct feature is a single-slab superstrate that has a permittivity gradient in the directions transverse to the antenna axis. The application of such a superstrate in a single-feed RCA improves the DBP by a factor of three or more as compared with superstrates composed of uniform dielectric slabs. Their very small area enables an antenna designer to achieve unprecedented figures of DBP per unit area, from a simple planar antenna. Prototype RCAs have been fabricated and measurements have validated the concept. A measured 3-dB directivity bandwidth of 52.9% was demonstrated with a measured directivity of 16.4 dBi for an RCA that has a very small total footprint area of 1.54 λ0/2 at the lowest operating frequency (2.84λ0,c/2 at the center frequency). This represents an increase of 90% over the previous best measured RCA directivity bandwidth of 28%.

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http://hdl.handle.net/10453/159985