Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement

This paper presents a thorough review of the techniques involved in the enhancement of the efficiency performance of the reflectarray antenna. The effect of the selection of a suitable patch element or a proper feeding mechanism on efficiency improvement is studied in detail. Reflectarray loss quant...

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Main Authors: Dahri, M. Hashim, Jamaluddin, M. Haizal, Seman, Fauziahanim C., Abbasi, M. Inam, Sallehuddin, N. Fazreen, Ashyap, Adel Y. I., Kamarudin, M. Ramlee
Format: Article
Language:English
Published: MDPI 2020
Subjects:
Online Access:http://eprints.utm.my/91456/1/MHaizalJamaluddin2020_AspectsofEfficiencyEnhancementinReflectarrays.pdf
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author Dahri, M. Hashim
Jamaluddin, M. Haizal
Seman, Fauziahanim C.
Abbasi, M. Inam
Sallehuddin, N. Fazreen
Ashyap, Adel Y. I.
Kamarudin, M. Ramlee
author_facet Dahri, M. Hashim
Jamaluddin, M. Haizal
Seman, Fauziahanim C.
Abbasi, M. Inam
Sallehuddin, N. Fazreen
Ashyap, Adel Y. I.
Kamarudin, M. Ramlee
author_sort Dahri, M. Hashim
collection ePrints
description This paper presents a thorough review of the techniques involved in the enhancement of the efficiency performance of the reflectarray antenna. The effect of the selection of a suitable patch element or a proper feeding mechanism on efficiency improvement is studied in detail. Reflectarray loss quantification is examined in relation to the design techniques involved in the efficiency improvement. A low loss patch element with a wide reflection phase range and a properly illuminated reflectarray aperture are supposed to offer high efficiency performance. Additionally, the placement, the orientation and the position of a patch element on the reflectarray surface can also affect its efficiency performance. Mathematical equations were developed to estimate the efficiencies of circular and square aperture reflectarray antennas by considering their feed footprints. Moreover, a step by step practical method of predicting and measuring the total efficiency of a reflectarray antenna is presented. The two selected apertures of the reflectarray consisting of the square patch element configuration are fabricated and measured at a frequency of 26 GHz. Their measured efficiencies have been estimated using the derived equations, and the results were compared and validated using the efficiencies obtained by the conventional gain-directivity relation.
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spelling utm.eprints-914562021-06-30T12:16:30Z http://eprints.utm.my/91456/ Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement Dahri, M. Hashim Jamaluddin, M. Haizal Seman, Fauziahanim C. Abbasi, M. Inam Sallehuddin, N. Fazreen Ashyap, Adel Y. I. Kamarudin, M. Ramlee TK Electrical engineering. Electronics Nuclear engineering This paper presents a thorough review of the techniques involved in the enhancement of the efficiency performance of the reflectarray antenna. The effect of the selection of a suitable patch element or a proper feeding mechanism on efficiency improvement is studied in detail. Reflectarray loss quantification is examined in relation to the design techniques involved in the efficiency improvement. A low loss patch element with a wide reflection phase range and a properly illuminated reflectarray aperture are supposed to offer high efficiency performance. Additionally, the placement, the orientation and the position of a patch element on the reflectarray surface can also affect its efficiency performance. Mathematical equations were developed to estimate the efficiencies of circular and square aperture reflectarray antennas by considering their feed footprints. Moreover, a step by step practical method of predicting and measuring the total efficiency of a reflectarray antenna is presented. The two selected apertures of the reflectarray consisting of the square patch element configuration are fabricated and measured at a frequency of 26 GHz. Their measured efficiencies have been estimated using the derived equations, and the results were compared and validated using the efficiencies obtained by the conventional gain-directivity relation. MDPI 2020-11 Article PeerReviewed application/pdf en http://eprints.utm.my/91456/1/MHaizalJamaluddin2020_AspectsofEfficiencyEnhancementinReflectarrays.pdf Dahri, M. Hashim and Jamaluddin, M. Haizal and Seman, Fauziahanim C. and Abbasi, M. Inam and Sallehuddin, N. Fazreen and Ashyap, Adel Y. I. and Kamarudin, M. Ramlee (2020) Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement. Electronics (Switzerland), 9 (11). pp. 1-26. ISSN 2079-9292 http://dx.doi.org/10.3390/electronics9111887 DOI:10.3390/electronics9111887
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Dahri, M. Hashim
Jamaluddin, M. Haizal
Seman, Fauziahanim C.
Abbasi, M. Inam
Sallehuddin, N. Fazreen
Ashyap, Adel Y. I.
Kamarudin, M. Ramlee
Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement
title Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement
title_full Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement
title_fullStr Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement
title_full_unstemmed Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement
title_short Aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement
title_sort aspects of efficiency enhancement in reflectarrays with analytical investigation and accurate measurement
topic TK Electrical engineering. Electronics Nuclear engineering
url http://eprints.utm.my/91456/1/MHaizalJamaluddin2020_AspectsofEfficiencyEnhancementinReflectarrays.pdf
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