Análise téórico-experimental da resistência dinâmica de junções PN sob regime de bombeamento

• Ano de defesa: 2017
• Autor(a) principal: Lima, Rafael Ângelo Vieira Pessoa
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraíba; Brasil; Engenharia Elétrica; Programa de Pós-Graduação em Engenharia Elétrica; UFPB
• Palavras-chave em Português: Ruído em dispositivos eletrônicos; Resistência dinâmica em dispositivos bombeados; Ruído cicloestacionário; Noise in electronic devices; Dynamic resistance in pumped devices; Cyclostationary noise; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/123456789/12697

The present work aims to characterize the behavior of the small-signal resistance of a PN junction under pumped condition. The behavior of this resistance is important for a better understanding of the cyclostationary noise present in oscillators and mixers, circuits widely used in communication systems. A numerical software has been used to achieve the numerical solution of the device under test and to obtain the theoretical results of the proposed characterization. Based on the solution of the circuit found through numerical software, the spectral components of the resistance of the pumped circuit were obtained, validating the solution achieved with the aid of a computer aid design (CAD) software, for comparison with measurement data. The behavioral characteristic of the resistance found by the software proved to be in agreement with the experimental results and proved the existence of an analytical expression for the small-signal resistance of a PN junction. The results can be used in the optimization of oscillators to improve the relation between consumption and noise.