Traveling-wave antenna based on metamaterial transmission line structure for use in multiple wireless communication applications

Alibakhshi-Kenari, Mohammad and Naser-Moghadasi, Mohammad and Sadeghzadeh, Ramazan Ali and Virdee, Bal Singh and Limiti, Ernesto (2016) Traveling-wave antenna based on metamaterial transmission line structure for use in multiple wireless communication applications. AEÜ - International Journal of Electronics and Communications / Archiv für Elektronik und Übertragungstechnik, 70 (12). pp. 1645-1650. ISSN 1434-8411

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Official URL: http://www.sciencedirect.com/science/journal/14348...

Abstract

This paper introduces a left-handed metamaterial traveling-wave antenna (TWA) based on metamaterial transmission-line structure to enhance the gain and radiation efficiency of the antenna without trading on its fractional bandwidth. The antenna consists of a series of coupled unit-cells comprising ‘‘X-shaped” slots which are inductively terminated to ground. Effective aperture of the antenna can be increased by increasing the number of unit-cells. The consequence of this is enhanced gain and radiation efficiency performance with no adverse affect on its fractional bandwidth. The antenna’s characterizing parameters were extracted using 3D electromagnetic simulation tool (HFSSTM), and the antenna was fabricated using standard PCB manufacturing techniques on a 1.6 mm thick dielectric substrate with permittivity of 2.2. The antenna operates from 0.4 GHz to 4.7 GHz. The antenna has an electrical size of 0.017Lamda_o x 0.006Lamda_o x 0.002Lamda_o, where Lamda_o is free space wavelength at 400 MHz. The proposed antenna is significantly smaller than its conventional counterparts. Antenna’s measured optimum gain and radiation efficiency are 2 dBi and 65%, respectively, at 2.5 GHz. These features make the antenna attractive for use in multiple wireless
communication applications.

Item Type: Article
Uncontrolled Keywords: Traveling-wave antenna (TWA), Metamaterial (MTM), X-shaped slot, Broadband antenna
Subjects: 600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
Related URLs:
Depositing User: Bal Virdee
Date Deposited: 19 Jan 2017 09:48
Last Modified: 20 Jan 2017 09:16
URI: http://repository.londonmet.ac.uk/id/eprint/1171

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