Array of stacked leaky-wave antennas in groove gap waveguide technology

Abstract The design of an array of stacked leaky-wave antennas in groove gap waveguide technology is presented in this work. The proposed array is formed by simply stacking a number of leaky-wave antennas one on top of the other and feeding all of them with uniform amplitude and phase. The inter-ele...

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Autores principales:	Nafsika Memeletzoglou, Eva Rajo-Iglesias
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5a17594ed31c469786394ac082a95ea1
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spelling	oai:doaj.org-article:5a17594ed31c469786394ac082a95ea12021-12-02T13:57:58ZArray of stacked leaky-wave antennas in groove gap waveguide technology10.1038/s41598-021-81640-72045-2322https://doaj.org/article/5a17594ed31c469786394ac082a95ea12021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81640-7https://doaj.org/toc/2045-2322Abstract The design of an array of stacked leaky-wave antennas in groove gap waveguide technology is presented in this work. The proposed array is formed by simply stacking a number of leaky-wave antennas one on top of the other and feeding all of them with uniform amplitude and phase. The inter-element distance is studied in order to avoid grating lobes and to maximize the directivity. A feeding network based on vertical coupling is designed, where the input port feeds the bottom element, and then the energy is equally coupled to the other elements. To obtain maximum directivity the phase is corrected at each element separately. The central frequency of the proposed design is 28 GHz. With this technique of stacking the elements a pencil beam is achieved, i.e. the radiated energy is focalized in the two main planes. The designed array with four elements achieves an enhancement of + 5 dB, reaching 24.5 dBi of directivity in comparison to 19.6 dBi of directivity of the single leaky-wave antenna made in this technology. A prototype is manufactured and measured and its results are presented and compared with the simulations.Nafsika MemeletzoglouEva Rajo-IglesiasNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nafsika Memeletzoglou Eva Rajo-Iglesias Array of stacked leaky-wave antennas in groove gap waveguide technology
description	Abstract The design of an array of stacked leaky-wave antennas in groove gap waveguide technology is presented in this work. The proposed array is formed by simply stacking a number of leaky-wave antennas one on top of the other and feeding all of them with uniform amplitude and phase. The inter-element distance is studied in order to avoid grating lobes and to maximize the directivity. A feeding network based on vertical coupling is designed, where the input port feeds the bottom element, and then the energy is equally coupled to the other elements. To obtain maximum directivity the phase is corrected at each element separately. The central frequency of the proposed design is 28 GHz. With this technique of stacking the elements a pencil beam is achieved, i.e. the radiated energy is focalized in the two main planes. The designed array with four elements achieves an enhancement of + 5 dB, reaching 24.5 dBi of directivity in comparison to 19.6 dBi of directivity of the single leaky-wave antenna made in this technology. A prototype is manufactured and measured and its results are presented and compared with the simulations.
format	article
author	Nafsika Memeletzoglou Eva Rajo-Iglesias
author_facet	Nafsika Memeletzoglou Eva Rajo-Iglesias
author_sort	Nafsika Memeletzoglou
title	Array of stacked leaky-wave antennas in groove gap waveguide technology
title_short	Array of stacked leaky-wave antennas in groove gap waveguide technology
title_full	Array of stacked leaky-wave antennas in groove gap waveguide technology
title_fullStr	Array of stacked leaky-wave antennas in groove gap waveguide technology
title_full_unstemmed	Array of stacked leaky-wave antennas in groove gap waveguide technology
title_sort	array of stacked leaky-wave antennas in groove gap waveguide technology
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5a17594ed31c469786394ac082a95ea1
work_keys_str_mv	AT nafsikamemeletzoglou arrayofstackedleakywaveantennasingroovegapwaveguidetechnology AT evarajoiglesias arrayofstackedleakywaveantennasingroovegapwaveguidetechnology
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Array of stacked leaky-wave antennas in groove gap waveguide technology

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