Periodic U-Slot-Loaded Dual-Band Half-Width Microstrip Leaky-Wave Antennas for Forward and Backward Beam Scanning

Karmokar, DK; Esselle, KP

Periodic U-Slot-Loaded Dual-Band Half-Width Microstrip Leaky-Wave Antennas for Forward and Backward Beam Scanning

Karmokar, DK

Esselle, KP

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Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2015, 63 (12), pp. 5372 - 5381
Issue Date:: 2015-12-01

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Field	Value	Language
dc.contributor.author	Karmokar, DK https://orcid.org/0000-0002-6614-5064	en_US
dc.contributor.author	Esselle, KP https://orcid.org/0000-0002-3681-0086	en_US
dc.date.issued	2015-12-01	en_US
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2015, 63 (12), pp. 5372 - 5381	en_US
dc.identifier.issn	0018-926X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/119399
dc.description.abstract	© 2015 IEEE. Half-width microstrip leaky-wave antennas (HW-MLWAs) are generally single band. Here, we present a new method to achieve dual-band operation from an HW-MLWA by periodically loading the antenna with U-shaped slots. These dual-band MLWAs are able to steer the beam in forward directions in one band and in backward directions in the other band. One of the antenna designs was prototyped and tested, and excellent agreement between the predicted and measured results were observed. The measured 10-dB return loss bandwidth of the first and second bands are 19.5% (5.24-6.37 GHz) and 13.2% (7.9-9.02 GHz), respectively. The antenna can steer the main beam from 30° to 65° in the first band and from -46° to -10° in the second band by sweeping the frequency from 5.25 to 6.25 GHz and 7.75 to 9 GHz, respectively. The measured peak gain of the antenna is 12.2 and 14.1 dBi in the first and second bands, respectively. Although the antenna parameters are optimized for dual-band operation, the radiation properties in another higher frequency band (third band) are also explored. In the third band, the antenna beam continuously scans from backward to forward direction as frequency increases. Moreover, this U-slot loaded single-layer half-width LWA is easy to fabricate.	en_US
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation	en_US
dc.relation.isbasedon	10.1109/TAP.2015.2490252	en_US
dc.subject.classification	Networking & Telecommunications	en_US
dc.title	Periodic U-Slot-Loaded Dual-Band Half-Width Microstrip Leaky-Wave Antennas for Forward and Backward Beam Scanning	en_US
dc.type	Journal Article
utslib.citation.volume	12	en_US
utslib.citation.volume	63	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
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.issue	12	en_US
pubs.publication-status	Published	en_US
pubs.volume	63	en_US

Abstract:

© 2015 IEEE. Half-width microstrip leaky-wave antennas (HW-MLWAs) are generally single band. Here, we present a new method to achieve dual-band operation from an HW-MLWA by periodically loading the antenna with U-shaped slots. These dual-band MLWAs are able to steer the beam in forward directions in one band and in backward directions in the other band. One of the antenna designs was prototyped and tested, and excellent agreement between the predicted and measured results were observed. The measured 10-dB return loss bandwidth of the first and second bands are 19.5% (5.24-6.37 GHz) and 13.2% (7.9-9.02 GHz), respectively. The antenna can steer the main beam from 30° to 65° in the first band and from -46° to -10° in the second band by sweeping the frequency from 5.25 to 6.25 GHz and 7.75 to 9 GHz, respectively. The measured peak gain of the antenna is 12.2 and 14.1 dBi in the first and second bands, respectively. Although the antenna parameters are optimized for dual-band operation, the radiation properties in another higher frequency band (third band) are also explored. In the third band, the antenna beam continuously scans from backward to forward direction as frequency increases. Moreover, this U-slot loaded single-layer half-width LWA is easy to fabricate.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/119399