Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10071/21282 |
Resumo: | A transmitarray antenna is evaluated to generate a multi-focusing spot area in the Fresnel region of the antenna in the Ka-band. The antenna is designed to focus the radiated field at a certain point using a central feeding configuration. The number of feeds is increased to create as many focusing spots as feeds. The feeds are placed along an arc defined in the principal planes of the transmitarray, radiating independent near-field spots and providing a solution with a wide-angle spot scanning without an antenna displacement and a high isolation between feeds. To validate this concept, a transmitarray based on dielectric-only cells is designed and simulated under full-wave conditions. Then, this design is manufactured using a 3D printing technique, and the prototype is measured in a planar acquisition range. Measurements are performed for different feed positions in order to validate the multi-focusing capability of the antenna. Measurements and simulations show a high agreement and validate the proposed design technique. |
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Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-BandDielectric transmitarray3D printingNear-field focusingNear-field multi-focusingA transmitarray antenna is evaluated to generate a multi-focusing spot area in the Fresnel region of the antenna in the Ka-band. The antenna is designed to focus the radiated field at a certain point using a central feeding configuration. The number of feeds is increased to create as many focusing spots as feeds. The feeds are placed along an arc defined in the principal planes of the transmitarray, radiating independent near-field spots and providing a solution with a wide-angle spot scanning without an antenna displacement and a high isolation between feeds. To validate this concept, a transmitarray based on dielectric-only cells is designed and simulated under full-wave conditions. Then, this design is manufactured using a 3D printing technique, and the prototype is measured in a planar acquisition range. Measurements are performed for different feed positions in order to validate the multi-focusing capability of the antenna. Measurements and simulations show a high agreement and validate the proposed design technique.MDPI2021-01-14T19:33:31Z2021-01-01T00:00:00Z20212021-01-14T19:30:23Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10071/21282eng1424-822010.3390/s21020422Vaquero, A. V.Rodriguez Pino, M.Arrebola, M.Matos, S.Costa, J. R.Fernandes, C. A.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-09T17:59:04Zoai:repositorio.iscte-iul.pt:10071/21282Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:30:55.727299Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band |
title |
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band |
spellingShingle |
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band Vaquero, A. V. Dielectric transmitarray 3D printing Near-field focusing Near-field multi-focusing |
title_short |
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band |
title_full |
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band |
title_fullStr |
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band |
title_full_unstemmed |
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band |
title_sort |
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band |
author |
Vaquero, A. V. |
author_facet |
Vaquero, A. V. Rodriguez Pino, M. Arrebola, M. Matos, S. Costa, J. R. Fernandes, C. A. |
author_role |
author |
author2 |
Rodriguez Pino, M. Arrebola, M. Matos, S. Costa, J. R. Fernandes, C. A. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Vaquero, A. V. Rodriguez Pino, M. Arrebola, M. Matos, S. Costa, J. R. Fernandes, C. A. |
dc.subject.por.fl_str_mv |
Dielectric transmitarray 3D printing Near-field focusing Near-field multi-focusing |
topic |
Dielectric transmitarray 3D printing Near-field focusing Near-field multi-focusing |
description |
A transmitarray antenna is evaluated to generate a multi-focusing spot area in the Fresnel region of the antenna in the Ka-band. The antenna is designed to focus the radiated field at a certain point using a central feeding configuration. The number of feeds is increased to create as many focusing spots as feeds. The feeds are placed along an arc defined in the principal planes of the transmitarray, radiating independent near-field spots and providing a solution with a wide-angle spot scanning without an antenna displacement and a high isolation between feeds. To validate this concept, a transmitarray based on dielectric-only cells is designed and simulated under full-wave conditions. Then, this design is manufactured using a 3D printing technique, and the prototype is measured in a planar acquisition range. Measurements are performed for different feed positions in order to validate the multi-focusing capability of the antenna. Measurements and simulations show a high agreement and validate the proposed design technique. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-14T19:33:31Z 2021-01-01T00:00:00Z 2021 2021-01-14T19:30:23Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10071/21282 |
url |
http://hdl.handle.net/10071/21282 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1424-8220 10.3390/s21020422 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799134871296147456 |