High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band

Detalhes bibliográficos
Autor(a) principal: Matos, S.
Data de Publicação: 2017
Outros Autores: Lima, E. B., Silva, J. S., Costa, J. R., Fernandes, C. A., Fonseca, N. J. G., Mosig, J. R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10071/15685
Resumo: Transmit array design is more challenging for dual-band operation than for single band, due to the independent 360° phase wrapping jumps needed at each band when large electrical length compensation is involved. This happens when aiming at large gains, typically above 25 dBi with beam scanning and F/D?1 . No such designs have been reported in the literature. A general method is presented here to reduce the complexity of dual-band transmit array design, valid for arbitrarily large phase error compensation and any band ratio, using a finite number of different unit cells. The procedure is demonstrated for two offset transmit array implementations operating in circular polarization at 20 GHz(Rx) and 30 GHz(Tx) for Ka-band satellite-on-the-move terminals with mechanical beam-steering. An appropriate set of 30 dual-band unit cells is developed with transmission coefficient greater than ?0.9 dB. The full-size transmit array is characterized by full-wave simulation enabling elevation beam scanning over 0°–50° with gains reaching 26 dBi at 20 GHz and 29 dBi at 30 GHz. A smaller prototype was fabricated and measured, showing a measured gain of 24 dBi at 20 GHz and 27 dBi at 30 GHz. In both cases, the beam pointing direction is coincident over the two frequency bands, and thus confirming the proposed design procedure.
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spelling High gain dual-band beam-steering transmit array for Satcom terminals at Ka-bandDual bandFlat lensFrequency selective surfaceMechanical scanningPolarization-insensitiveSatellite-on-the-move (SOTM)Transmit arraysWireless communication networkTransmit array design is more challenging for dual-band operation than for single band, due to the independent 360° phase wrapping jumps needed at each band when large electrical length compensation is involved. This happens when aiming at large gains, typically above 25 dBi with beam scanning and F/D?1 . No such designs have been reported in the literature. A general method is presented here to reduce the complexity of dual-band transmit array design, valid for arbitrarily large phase error compensation and any band ratio, using a finite number of different unit cells. The procedure is demonstrated for two offset transmit array implementations operating in circular polarization at 20 GHz(Rx) and 30 GHz(Tx) for Ka-band satellite-on-the-move terminals with mechanical beam-steering. An appropriate set of 30 dual-band unit cells is developed with transmission coefficient greater than ?0.9 dB. The full-size transmit array is characterized by full-wave simulation enabling elevation beam scanning over 0°–50° with gains reaching 26 dBi at 20 GHz and 29 dBi at 30 GHz. A smaller prototype was fabricated and measured, showing a measured gain of 24 dBi at 20 GHz and 27 dBi at 30 GHz. In both cases, the beam pointing direction is coincident over the two frequency bands, and thus confirming the proposed design procedure.IEEE - Institute of electrical electronics and engineers2018-04-23T11:57:39Z2017-01-01T00:00:00Z20172019-03-28T10:37:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10071/15685eng0018-926X10.1109/TAP.2017.2702658Matos, S.Lima, E. B.Silva, J. S.Costa, J. R.Fernandes, C. A.Fonseca, N. J. G.Mosig, J. R.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:RCAAP2023-11-09T17:47:37Zoai:repositorio.iscte-iul.pt:10071/15685Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:23:07.800916Repositório 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 High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
title High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
spellingShingle High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
Matos, S.
Dual band
Flat lens
Frequency selective surface
Mechanical scanning
Polarization-insensitive
Satellite-on-the-move (SOTM)
Transmit arrays
Wireless communication network
title_short High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
title_full High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
title_fullStr High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
title_full_unstemmed High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
title_sort High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
author Matos, S.
author_facet Matos, S.
Lima, E. B.
Silva, J. S.
Costa, J. R.
Fernandes, C. A.
Fonseca, N. J. G.
Mosig, J. R.
author_role author
author2 Lima, E. B.
Silva, J. S.
Costa, J. R.
Fernandes, C. A.
Fonseca, N. J. G.
Mosig, J. R.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Matos, S.
Lima, E. B.
Silva, J. S.
Costa, J. R.
Fernandes, C. A.
Fonseca, N. J. G.
Mosig, J. R.
dc.subject.por.fl_str_mv Dual band
Flat lens
Frequency selective surface
Mechanical scanning
Polarization-insensitive
Satellite-on-the-move (SOTM)
Transmit arrays
Wireless communication network
topic Dual band
Flat lens
Frequency selective surface
Mechanical scanning
Polarization-insensitive
Satellite-on-the-move (SOTM)
Transmit arrays
Wireless communication network
description Transmit array design is more challenging for dual-band operation than for single band, due to the independent 360° phase wrapping jumps needed at each band when large electrical length compensation is involved. This happens when aiming at large gains, typically above 25 dBi with beam scanning and F/D?1 . No such designs have been reported in the literature. A general method is presented here to reduce the complexity of dual-band transmit array design, valid for arbitrarily large phase error compensation and any band ratio, using a finite number of different unit cells. The procedure is demonstrated for two offset transmit array implementations operating in circular polarization at 20 GHz(Rx) and 30 GHz(Tx) for Ka-band satellite-on-the-move terminals with mechanical beam-steering. An appropriate set of 30 dual-band unit cells is developed with transmission coefficient greater than ?0.9 dB. The full-size transmit array is characterized by full-wave simulation enabling elevation beam scanning over 0°–50° with gains reaching 26 dBi at 20 GHz and 29 dBi at 30 GHz. A smaller prototype was fabricated and measured, showing a measured gain of 24 dBi at 20 GHz and 27 dBi at 30 GHz. In both cases, the beam pointing direction is coincident over the two frequency bands, and thus confirming the proposed design procedure.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01T00:00:00Z
2017
2018-04-23T11:57:39Z
2019-03-28T10:37:11Z
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/10071/15685
url http://hdl.handle.net/10071/15685
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0018-926X
10.1109/TAP.2017.2702658
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 - Institute of electrical electronics and engineers
publisher.none.fl_str_mv IEEE - Institute of electrical electronics and engineers
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
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