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Previous issue date: 2014-12-10 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / O Sistema Brasileiro de Coleta de Dados Ambientais (SBCDA) ? respons?vel pela coleta e
transmiss?o de dados meteorol?gicos e ambientais, utilizados por dezenas de institui??es e
organiza??es nacionais. O segmento espacial do sistema, composto pelos sat?lites de coleta
de dados, ? uma pe?a fundamental para seu funcionamento. Para garantir a continuidade e
qualidade desses servi?os, esfor?os s?o voltados para o desenvolvimento de alternativas para
a constru??o de novos sat?lites. Visando reduzir o tamanho do atual transponder brasileiro,
? proposto neste trabalho a integra??o de uma interface de r?dio frequ?ncia (do ingl?s FrontEnd)
a ser embarcado nos receptores da pr?xima gera??o dos sat?lites SBCDA. O circuito ?
concebido respeitando os requisistos do padr?o de coleta de dados internacional, ARGOS, e
do SBCDA. Este trabalho foca, portanto, na integra??o de um amplificador de baixo ru?do e
dois misturadores na faixa UHF em tecnologia CMOS padr?o. As especifica??es de projeto s?o
primeiramente descritas e ent?o as topologias dos circuitos s?o escolhidas. A concep??o dos
circuitos ? analisada e os seus par?metros de projeto s?o derivados. Finalmente, seu layout ?
concebido e os resultados finais s?o divulgados. O chip ser? fabricado utilizando a tecnologia
CMOS padr?o de 130 nm da STmicroelectronics. / The Brazilian Environmental Data Collecting System (SBCDA) collects and broadcasts meteorological
and environmental data, to be handled by dozens of institutions and organizations.
The system space segment, composed by the data collecting satellites, plays an important role
for the system operation. To ensure the continuity and quality of these services, efforts are being
made to the development of new satellite architectures. Aiming a reduction of size and power
consumption, the design of an integrated circuit containing a receiver front-end is proposed, to
be embedded in the next SBCDA satellite generations. The circuit will also operate under the
requirements of the international data collecting standard ARGOS. This work focuses on the
design of an UHF low noise amplifier and mixers in a CMOS standard technology. The specifi-
cations are firstly described and the circuit topologies presented. Then the circuit conception is
discussed and the design variables derived. Finally, the layout is designed and the final results
are commented. The chip will be fabricated in a 130 nm technology from ST Microelectronics.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/19680 |
| Date | 10 December 2014 |
| Creators | Costa J?nior, Carlos Antonio Mendes da |
| Contributors | 76867668453, http://lattes.cnpq.br/0873496251879638, Souza, Antonio Augusto Lisboa de, 02216979422, http://lattes.cnpq.br/2506548050366736, Fernandes, Marcelo Augusto Costa, 02099790469, http://lattes.cnpq.br/3475337353676349, Lima, Robson Nunes de, Catunda, Sebastian Yuri Cavalcanti |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA EL?TRICA E DE COMPUTA??O, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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