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

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

Citation

Alibakhshikenari, M., Virdee, B. S., Shukla, P., See, C. H., Abd-Alhameed, R., Khalily, M., …Limiti, E. (2019). Beam‐scanning leaky‐wave antenna based on CRLH‐metamaterial for millimetre‐wave applications. IET microwaves, antennas & propagation, 13(8), 1129-1133. https://doi.org/10.1049/iet-map.2018.5101

• 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