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Beam‐scanning leaky‐wave antenna based on CRLH‐metamaterial for millimetre‐wave applications

Alibakhshikenari, Mohammad; Virdee, Bal S.; Shukla, Panchamkumar; See, Chan H.; Abd-Alhameed, Raed; Khalily, Mohsen; Falcone, Francisco; Limiti, Ernesto

Authors

Mohammad Alibakhshikenari

Bal S. Virdee

Panchamkumar Shukla

Raed Abd-Alhameed

Mohsen Khalily

Francisco Falcone

Ernesto Limiti



Abstract

This paper presents empirical results of an innovative beam scanning leaky-wave antenna (LWA) which enables scanning over a wide angle from -35o to +34.5o between 57 GHz and 62 GHz, with broadside radiation centered at 60 GHz. The proposed LWA design is based on composite right/left-handed transmission-line (CRLH-TL) concept. The single layer antenna structure includes a matrix of 3×9 square slots that is printed on top of the dielectric substrate; and printed on the bottom ground-plane are Π and T-shaped slots that enhance the impedance bandwidth and radiation properties of the antenna. The proposed antenna structure exhibits metamaterial property. The slot matrix provides beam scanning as a function of frequency. Physical and electrical size of the antenna is 18.7×6×1.6 mm3 and 3.43λ_0×1.1λ_0×0.29λ_0, respectively; where λ_0 is free space wavelength at 55 GHz. The antenna has a measured impedance bandwidth of 10 GHz (55 GHz to 65 GHz) or fractional bandwidth of 16.7%. Its optimum gain and efficiency are 7.8 dBi and 84.2% at 62 GHz

Journal Article Type Article
Acceptance Date Mar 4, 2019
Online Publication Date Mar 26, 2019
Publication Date 2019-07
Deposit Date Mar 11, 2019
Publicly Available Date Mar 12, 2019
Journal IET Microwaves, Antennas & Propagation
Print ISSN 1751-8725
Electronic ISSN 1751-8733
Publisher Institution of Engineering and Technology (IET)
Peer Reviewed Peer Reviewed
Volume 13
Issue 8
Pages 1129-1133
DOI https://doi.org/10.1049/iet-map.2018.5101
Keywords Beam-scanning antenna, slot antenna, metamaterials, leaky-wave antenna, millimeter-wave frequency
Public URL http://researchrepository.napier.ac.uk/Output/1640163
Contract Date Mar 11, 2019

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Copyright Statement
This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, Antennas & Propagationand is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library


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Copyright Statement
This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, Antennas & Propagationand is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library







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