Low noise amplifiers' design for radioastronomy

• Autor(a) principal: Silva, Clara Maria Apolinário Lucas da
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/14549
• topic: Engenharia electrónica; Radiofrequência; Radioastronomia; Amplificadores (Electrónica)

Space exploration has always been an ambition to human kind. Nowadays the new technologies that could be used in radioastronomy field have made this goal even more attainable. The big manufacturers that produce the equipment and the necessary components have made a big reinforcement that boosted the creation of new colossal projects, such as the SKA. Within this bold project stands this thesis with the intention of establishing a new approach to the implementation of the recent technologies on the design of low noise amplifiers. This work has the objective of filling the need of decreasing the cost of the numerous components that incorporate the reception's systems. The low noise amplifier is inserted on the radiometer which follows the antenna and is the first electronic device reached by the electromagnetic radiation coming from space. The construction's importance of an amplifier that introduces a low level of noise at reduced cost is due to the massive amount of this type of elements that exists on a project of this magnitude. It is also due to the high quality that this device must have to assure the consequent decoding that follows.