A pattern reconfigurable antenna using eight-dipole configuration for energy harvesting applications

Aboualalaa, Mohamed, Mohamed, Hesham A., Alghamdi, Thamer A. H. and Alathbah, Moath 2023. A pattern reconfigurable antenna using eight-dipole configuration for energy harvesting applications. Sensors 23 (20) , 8451. 10.3390/s23208451

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Abstract

A pattern reconfigurable antenna, composed of eight elements, is proposed for energy harvesting applications. Pattern reconfigurable antennas are a promising technique for harvesting from different wireless sources. The radiation pattern of the proposed antenna can be steered electronically using an RF switch matrix, covering an angle range from 0 to 360 degrees with a step size of 45 degrees. The proposed antenna primarily consists of an eight-dipole configuration that shares the same excitation. Each dipole is excited using a balun comprising a quarter-wavelength grounded stub and a quarter-wavelength open-circuit stub. The proposed antenna operates in the frequency range of 4.17 to 4.5 GHz, with an impedance bandwidth of 7.6%. By switching between the different switches, the antenna can be steered with a narrower rotational angle. In addition, the antenna can work in an omnidirectional mode when all switches are in the ON state simultaneously. The results demonstrate a good agreement between the numerical and experimental findings for the reflection coefficient and radiation characteristics of the proposed reconfigurable antenna.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Additional Information:	License information from Publisher: LICENSE 1: URL: https://creativecommons.org/licenses/by/4.0/, Type: open-access
Publisher:	MDPI
ISSN:	1424-8220
Date of First Compliant Deposit:	8 November 2023
Date of Acceptance:	10 October 2023
Last Modified:	08 Nov 2023 10:45
URI:	https://orca.cardiff.ac.uk/id/eprint/163718

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