High gain dual-band beam-steering transmit array for Satcom terminals at Ka-band
Autor(a) principal: | |
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Data de Publicação: | 2017 |
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/10071/15685 |
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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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 |
repository.mail.fl_str_mv |
|
_version_ |
1799134792784019456 |