New space satellite communications
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/38987 |
Resumo: | In recent years, Low Earth Orbit satellites, also known as satellite constellations and Internet from space have become hot topics. For that, many established satellite operators such as SpaceX and Amazon have recently filed applications for these types of constellations with novel architectures that rely on thousands of high-throughput satellites, combined with an even-larger ground segment, which will compete with and complement the terrestrial Internet infrastructure where it is inefficient or non-existent. For that, multiple beam antennas are identified as a critical technology for the 5G, the 6G and more generally beyond 5G wireless communications links in both terrestrial networks and non-terrestrial networks. Multibeam antenna systems operating in the millimeter-wave frequency bands have attracted a lot of interest and have been actively investigated. They represent the key technology for supporting high data transmission rates, an improved signalto- interference-plus-noise ratio, an increased energy and spectral efficiency, and versatile beam shaping, enabling beamforming and massive MIMO. To reduce the cost and power consumption, there is a special industrial interest in adopting analogue multiple beam antenna array technology. An important sub-system in many of such antenna arrays is the circuit type beamforming network such as Butler matrix, Blass matrix, Nolen matrix, and Rotman lens, mostly at millimeter-wave frequencies. In this work these circuit-type beamforming networks are discussed and compared with higher incidence in the Butler matrix with four input ports and four output ports which is able of steer four independent beams to four different directions depending on which input port is being excited. As proof of concept a 4x4 Butler matrix operating in the 28-GHz band was carefully designed using microstrip technology in which each component was individually optimized and integrated with four patch antennas at the outputs of the network. |
id |
RCAP_d003302da4d3b0a393f76321288aba13 |
---|---|
oai_identifier_str |
oai:ria.ua.pt:10773/38987 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
New space satellite communicationsButler matrixBeamformingMultibeam antennaSatelliteIn recent years, Low Earth Orbit satellites, also known as satellite constellations and Internet from space have become hot topics. For that, many established satellite operators such as SpaceX and Amazon have recently filed applications for these types of constellations with novel architectures that rely on thousands of high-throughput satellites, combined with an even-larger ground segment, which will compete with and complement the terrestrial Internet infrastructure where it is inefficient or non-existent. For that, multiple beam antennas are identified as a critical technology for the 5G, the 6G and more generally beyond 5G wireless communications links in both terrestrial networks and non-terrestrial networks. Multibeam antenna systems operating in the millimeter-wave frequency bands have attracted a lot of interest and have been actively investigated. They represent the key technology for supporting high data transmission rates, an improved signalto- interference-plus-noise ratio, an increased energy and spectral efficiency, and versatile beam shaping, enabling beamforming and massive MIMO. To reduce the cost and power consumption, there is a special industrial interest in adopting analogue multiple beam antenna array technology. An important sub-system in many of such antenna arrays is the circuit type beamforming network such as Butler matrix, Blass matrix, Nolen matrix, and Rotman lens, mostly at millimeter-wave frequencies. In this work these circuit-type beamforming networks are discussed and compared with higher incidence in the Butler matrix with four input ports and four output ports which is able of steer four independent beams to four different directions depending on which input port is being excited. As proof of concept a 4x4 Butler matrix operating in the 28-GHz band was carefully designed using microstrip technology in which each component was individually optimized and integrated with four patch antennas at the outputs of the network.Nos últimos anos, satélites em órbitas baixas, também conhecidos como constelações de satélites e Internet vinda do espaço tornaram-se tópicos bastante discutidos dentro da comunidade aerospacial. Para tal, diversos operadores de satélites como a SpaceX e a Amazon apresentaram propostas para estes tipos de constelações com arquiteturas inovadoras que dependem de milhares de satélites de alto débito, combinados com segmentos terrestres ainda maiores que prometem competir e complementar as infrastruturas de Internet terrestres onde apresentam baixos desempenhos ou onde são inexistentes. Antenas de múltiplos feixes correspondem a uma tecnologia critica para comunicações sem fios 5G, 6G e, mais geralmente, "beyond 5G" quer para redes terrestres quer para redes não terrestres. Sistemas com antenas multifeixe a operar na banda das ondas milimétricas têm atraído bastante interesse e têm sido ativamente investigadas. Estas representam a tecnologia chave para a transmissão de altas taxas de dados, melhores relações sinal-ruído, maiores eficiências energéticas e espetrais e formato de feixe versátil, permitindo tecnologias de beamforming e MIMO. Para reduzir o custo e consumo de potência, existe um interesse industrial especial em adotar tecnologias com agregados de antenas analógicos com múlitplos feixes. Um sub-sistema importante em muitos desses agregados é a rede de beamforming como a matriz de Butler, matriz de Blass, matriz de Nolen e a lente de Rotman, maioritariamente para a banda das ondas milimétricas. Neste trabalho estas redes de beamforming são discutidas e comparadas com maior incidência na matriz de Butler com quatro portos de entrada e de saída que é capaz de direcionar quatro feixes independentes para quatro direções diferentes dependendo no porto de entrada que está a ser alimentado. Como prova de conceito, uma matriz de Butler 4x4 a operar na banda dos 28 GHz foi cuidadosamente projetada usando tecnologia microstrip no qual cada componente foi individualmente otimizado e integrado com quatro antenas patch nas saídas do circuito.2024-12-15T00:00:00Z2022-12-09T00:00:00Z2022-12-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/38987engGomes, Rodrigo Brancoinfo:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:15:59Zoai:ria.ua.pt:10773/38987Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:09:11.788375Repositório 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 |
New space satellite communications |
title |
New space satellite communications |
spellingShingle |
New space satellite communications Gomes, Rodrigo Branco Butler matrix Beamforming Multibeam antenna Satellite |
title_short |
New space satellite communications |
title_full |
New space satellite communications |
title_fullStr |
New space satellite communications |
title_full_unstemmed |
New space satellite communications |
title_sort |
New space satellite communications |
author |
Gomes, Rodrigo Branco |
author_facet |
Gomes, Rodrigo Branco |
author_role |
author |
dc.contributor.author.fl_str_mv |
Gomes, Rodrigo Branco |
dc.subject.por.fl_str_mv |
Butler matrix Beamforming Multibeam antenna Satellite |
topic |
Butler matrix Beamforming Multibeam antenna Satellite |
description |
In recent years, Low Earth Orbit satellites, also known as satellite constellations and Internet from space have become hot topics. For that, many established satellite operators such as SpaceX and Amazon have recently filed applications for these types of constellations with novel architectures that rely on thousands of high-throughput satellites, combined with an even-larger ground segment, which will compete with and complement the terrestrial Internet infrastructure where it is inefficient or non-existent. For that, multiple beam antennas are identified as a critical technology for the 5G, the 6G and more generally beyond 5G wireless communications links in both terrestrial networks and non-terrestrial networks. Multibeam antenna systems operating in the millimeter-wave frequency bands have attracted a lot of interest and have been actively investigated. They represent the key technology for supporting high data transmission rates, an improved signalto- interference-plus-noise ratio, an increased energy and spectral efficiency, and versatile beam shaping, enabling beamforming and massive MIMO. To reduce the cost and power consumption, there is a special industrial interest in adopting analogue multiple beam antenna array technology. An important sub-system in many of such antenna arrays is the circuit type beamforming network such as Butler matrix, Blass matrix, Nolen matrix, and Rotman lens, mostly at millimeter-wave frequencies. In this work these circuit-type beamforming networks are discussed and compared with higher incidence in the Butler matrix with four input ports and four output ports which is able of steer four independent beams to four different directions depending on which input port is being excited. As proof of concept a 4x4 Butler matrix operating in the 28-GHz band was carefully designed using microstrip technology in which each component was individually optimized and integrated with four patch antennas at the outputs of the network. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-12-09T00:00:00Z 2022-12-09 2024-12-15T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/38987 |
url |
http://hdl.handle.net/10773/38987 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
dc.format.none.fl_str_mv |
application/pdf |
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_ |
1799137742995587072 |