Wideband Microstrip Leaky-Wave Antennas with Two Symmetrical Side Beams for Simultaneous Dual-Beam Scanning

Karmokar, DK; Esselle, KP; Bird, TS

Wideband Microstrip Leaky-Wave Antennas with Two Symmetrical Side Beams for Simultaneous Dual-Beam Scanning

Karmokar, DK

Esselle, KP

Bird, TS

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Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2016, 64 (4), pp. 1262 - 1269
Issue Date:: 2016-04-15

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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.contributor.author	Bird, TS	en_US
dc.date.issued	2016-04-15	en_US
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2016, 64 (4), pp. 1262 - 1269	en_US
dc.identifier.issn	0018-926X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/118477
dc.description.abstract	© 2016 IEEE. Wideband microstrip leaky-wave antennas (LWAs) that radiate two symmetrical side beams are described. The two beams are steered simultaneously by sweeping the operating frequency. To achieve this, the second higher order mode of the microstrip is excited. Two electric field nulls are created between the microstrip and the ground plane using via arrays to suppress lower order modes. To test the concept, one of the antenna designs was prototyped. The prototyped antenna is capable of steering two symmetrical beams within a range of 37° when frequency is swept between 6.92 and 8.75 GHz. The measured peak gain of the antenna is 12.7 dBi and the variation of gain from 6.92 to 8.75 GHz is 3.1 dB. The measured 10-dB return loss bandwidth is 23%, which is very large for a dual-beam microstrip LWA. Such a wide impedance bandwidth is essential to achieve beam scanning over a wide angular range by sweeping frequency. Another advantage is that this single-layer antenna is easy to fabricate.	en_US
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation	en_US
dc.relation.isbasedon	10.1109/TAP.2016.2529646	en_US
dc.subject.classification	Networking & Telecommunications	en_US
dc.title	Wideband Microstrip Leaky-Wave Antennas with Two Symmetrical Side Beams for Simultaneous Dual-Beam Scanning	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	64	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	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	64	en_US

Abstract:

© 2016 IEEE. Wideband microstrip leaky-wave antennas (LWAs) that radiate two symmetrical side beams are described. The two beams are steered simultaneously by sweeping the operating frequency. To achieve this, the second higher order mode of the microstrip is excited. Two electric field nulls are created between the microstrip and the ground plane using via arrays to suppress lower order modes. To test the concept, one of the antenna designs was prototyped. The prototyped antenna is capable of steering two symmetrical beams within a range of 37° when frequency is swept between 6.92 and 8.75 GHz. The measured peak gain of the antenna is 12.7 dBi and the variation of gain from 6.92 to 8.75 GHz is 3.1 dB. The measured 10-dB return loss bandwidth is 23%, which is very large for a dual-beam microstrip LWA. Such a wide impedance bandwidth is essential to achieve beam scanning over a wide angular range by sweeping frequency. Another advantage is that this single-layer antenna is easy to fabricate.

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http://hdl.handle.net/10453/118477