Compact Single Layer Travelling-Wave Antenna Design Using Metamaterial Transmission-Lines

Alibakhshi-Kenari, Mohammad, Virdee, Bal Singh and Limiti, Ernesto (2017) Compact Single Layer Travelling-Wave Antenna Design Using Metamaterial Transmission-Lines. Radio Science, 52. pp. 1-12. ISSN 1944-799X

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/2017RS0...

Abstract

This paper presents a single-layer travelling-wave antenna (TWA) that is based on composite right/left-handed (CRLH)-metamaterial (MTM) transmission-line (TL) structure, which is implemented by using a combination of inter-digital capacitors and dual-spiral inductive slots. By embedding dual-spiral inductive slots inside the CRLH MTM-TL results in a compact TWA. Dimensions of the proposed CRLH MTM-TL TWA is 21.5×30.0 mm2 or 0.372λ0×0.520λ0 at 5.2 GHz (center frequency). The fabricated TWA operates over 1.8–8.6 GHz with a fractional bandwidth greater than 120%, and it exhibits a peak gain and radiation efficiency of 4.2 dBi and 81%, respectively, at 5 GHz. By avoiding the use of lumped components, via-holes or defected ground structures (DGS), the proposed TWA design is economic for mass production as well as easy to integrate with wireless communication systems.

Item Type: Article
Uncontrolled Keywords: travelling-wave antennas, planar antennas, microstrip, composite right/left-handed (CRLH), metamaterial transmission lines, inter-digital capacitor, double spiral inductor
Subjects: 600 Technology
600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
Depositing User: Bal Virdee
Date Deposited: 08 Jan 2018 10:36
Last Modified: 08 Jan 2018 10:36
URI: http://repository.londonmet.ac.uk/id/eprint/1306

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