Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patches
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10071/23237 |
Resumo: | Most of the transmitarray phase shifting cell designs assume a periodic repetition of the same cell to account for the coupling effects of the neighboring cells. However the behavior in terms of magnitude and phase of the transmission coefficient calculated in this way may change when the neighboring cells have different phase, as normally happens in transmitarrays due to phase discretization. This paper characterizes this effect using a family of sub-wavelength patch cells covering the entire 360º phase shift interval, all with transmission coefficient better than -0.2 dB in the periodic structure. A stepped-phase structure is analysed considering different phase step values from 5º up to 90º. It is shown that the magnitude of the cells transmission factor changes considerably at the transition between different elements, with the unit cells with higher phase shift showing increased transmission while the lower phase shift cells in the transition tend to block the transmission more. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patchesTransmitarrayFlat lensUnit cellFrequency selective surface (FSS)Transmission coeficientElements transitionMost of the transmitarray phase shifting cell designs assume a periodic repetition of the same cell to account for the coupling effects of the neighboring cells. However the behavior in terms of magnitude and phase of the transmission coefficient calculated in this way may change when the neighboring cells have different phase, as normally happens in transmitarrays due to phase discretization. This paper characterizes this effect using a family of sub-wavelength patch cells covering the entire 360º phase shift interval, all with transmission coefficient better than -0.2 dB in the periodic structure. A stepped-phase structure is analysed considering different phase step values from 5º up to 90º. It is shown that the magnitude of the cells transmission factor changes considerably at the transition between different elements, with the unit cells with higher phase shift showing increased transmission while the lower phase shift cells in the transition tend to block the transmission more.IEEE2021-09-28T12:02:25Z2015-01-01T00:00:00Z20152021-09-28T12:55:27Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10071/23237eng9781479970513Lima, E. B.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:RCAAP2024-07-07T02:29:41Zoai:repositorio.iscte-iul.pt:10071/23237Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-07-07T02:29:41Repositório 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 the phase discretization effect in transmitarrays formed by sub-wavelength patches |
title |
Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patches |
spellingShingle |
Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patches Lima, E. B. Transmitarray Flat lens Unit cell Frequency selective surface (FSS) Transmission coeficient Elements transition |
title_short |
Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patches |
title_full |
Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patches |
title_fullStr |
Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patches |
title_full_unstemmed |
Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patches |
title_sort |
Evaluation of the phase discretization effect in transmitarrays formed by sub-wavelength patches |
author |
Lima, E. B. |
author_facet |
Lima, E. B. Matos, S. Costa, J. R. Fernandes, C. A. |
author_role |
author |
author2 |
Matos, S. Costa, J. R. Fernandes, C. A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Lima, E. B. Matos, S. Costa, J. R. Fernandes, C. A. |
dc.subject.por.fl_str_mv |
Transmitarray Flat lens Unit cell Frequency selective surface (FSS) Transmission coeficient Elements transition |
topic |
Transmitarray Flat lens Unit cell Frequency selective surface (FSS) Transmission coeficient Elements transition |
description |
Most of the transmitarray phase shifting cell designs assume a periodic repetition of the same cell to account for the coupling effects of the neighboring cells. However the behavior in terms of magnitude and phase of the transmission coefficient calculated in this way may change when the neighboring cells have different phase, as normally happens in transmitarrays due to phase discretization. This paper characterizes this effect using a family of sub-wavelength patch cells covering the entire 360º phase shift interval, all with transmission coefficient better than -0.2 dB in the periodic structure. A stepped-phase structure is analysed considering different phase step values from 5º up to 90º. It is shown that the magnitude of the cells transmission factor changes considerably at the transition between different elements, with the unit cells with higher phase shift showing increased transmission while the lower phase shift cells in the transition tend to block the transmission more. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01T00:00:00Z 2015 2021-09-28T12:02:25Z 2021-09-28T12:55:27Z |
dc.type.driver.fl_str_mv |
conference object |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10071/23237 |
url |
http://hdl.handle.net/10071/23237 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
9781479970513 |
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 |
IEEE |
publisher.none.fl_str_mv |
IEEE |
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 |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
_version_ |
1817546252986875904 |