| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | mtc-m16.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZGivnJVY/LrgPs |
| Repositório | sid.inpe.br/mtc-m16@80/2006/06.12.19.32 (acesso restrito) |
| Última Atualização | 2018:07.06.16.32.36 (UTC) seeger05 |
| Repositório de Metadados | sid.inpe.br/mtc-m16@80/2006/06.12.19.32.03 |
| Última Atualização dos Metadados | 2021:02.11.18.15.35 (UTC) administrator |
| Chave Secundária | INPE--PRE/ |
| Rótulo | self-archiving-INPE-MCTIC-GOV-BR |
| Chave de Citação | LockMiraPretSant:2006:AnOpQu |
| Título | Analysis and Optimization of Quadrifilar Antennas for Brazilian Satellites  |
| Ano | 2006 |
| Data de Acesso | 03 maio 2024 |
| Tipo Secundário | PRE CI |
| Número de Arquivos | 1 |
| Tamanho | 162 KiB |
| 2. Contextualização | |
| Autor | 1 Lock, Luzia Lux 2 Miranda, Carlos Alberto Iennaco 3 Pretto, Thiago Brum 4 Santos, Diego dos |
| Grupo | 1 RSU-INPE-MCT-BR 2 DMC-INPE-MCT-BR 3 RSU-INPE-MCT-BR 4 RSU-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Nome do Evento | 57th International Astronautical Congress |
| Localização do Evento | Valência, Espanha |
| Data | 2-6 October |
| Tipo Terciário | Oral Session |
| Histórico (UTC) | 2006-06-15 00:00:23 :: seeger05 -> administrator :: 2006-11-09 20:10:23 :: administrator -> seeger05 :: 2007-01-11 16:50:45 :: seeger05 -> administrator :: 2018-06-05 01:16:49 :: administrator -> seeger05 :: 2006 2018-07-06 16:32:36 :: seeger05 -> administrator :: 2006 2021-02-11 18:15:35 :: administrator -> seeger05 :: 2006 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Tipo de Versão | publisher |
| Resumo | Data Collecting (DCS) and Service Telecommunication (TMTC) systems require antennas that provide omni-directional coverage, in reception and transmission. Such coverage is obtained mounting for each system, a pair of quadrifilar helices on opposite sides of the satellite with right and left hand circularly polarization respectively. The Satellites SCD-1, SCD-2, as well their antennas, designed and developed by National Institute for Space Research - INPE/MCT, and CBERS-2, designed and developed trough a partnership between Brazil and China, use this type of antenna to accomplish the telemetry transmission and command (TTC) and data transmission. This paper presents analysis and optimization of quadrifilar antennas, and the results compared with the models used on the satellites constructed by INPE. The quadrifilar antenna is composed by two orthogonal bifilares fed in phase quadrature. The bifilar used is a two elements helical antenna. Each element is a half-turn, half-wavelength helix. As with all coaxially fed balanced antennas the bifilar requires a balun. The method used was the infinite balun which employs a semi-rigid coaxial cable as one of the elements of the bifilar. At the feed point the center conductor of the coax is soldered to the opposite wire, whose material is copper clad steel. The baluns function is to distribute equal currents of opposite phase to flow on the outer surfaces of the coaxial cable and adjoining wire. The 90 degree phase relationship between bifilars needed to produce the quadrifilar can be achieved by the self-phased method. The desired 90º degree phase difference is obtained by designing the orthogonal bifilars such that one bifilar is larger relative to the desired resonant frequency length and, therefore, inductive while the other bifilar is smaller and, therefore, capacitive. The antennas project developed by INPE, havent considered the effects of the materials used on their structure. With the modeling of this antenna, using the Solid Works Software R , and doing the simulation with the High Frequency Structure Simulator R (HFSS) software, the parameters are adjusted for the antenna optimization, thus becoming, more practical and advantageous the construction of the antenna. |
| Área | CEA |
| Arranjo 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > CRCRS > Analysis and Optimization... |
| Arranjo 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMC > Analysis and Optimization... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Idioma | en |
| Grupo de Usuários | administrator seeger05 administrator |
| Visibilidade | shown |
| Permissão de Leitura | deny from all and allow from 150.163 |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3EUFCFP 8JMKD3MGPCW/446AF4B |
| Acervo Hospedeiro | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notas | |
| Campos Vazios | archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor electronicmailaddress format isbn issn keywords lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject targetfile tertiarymark type url volume |
| 7. Controle da descrição | |
| e-Mail (login) | seeger05 |
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