Solução exata e métodos assintóticos de alta frequência no problema da difração por uma cunha

Autores

  • Hernan G. Triana Universidad Icesi
  • Andrés Navarro Cadavid Universidad Icesi

DOI:

https://doi.org/10.18046/syt.v14i38.2285

Palavras-chave:

Teoria geométrica da difração, Métodos Assintóticos, Electromagnetismo Computacional.

Resumo

Apresenta-se a solução exata de Sommerfeld para o problema canônico bidimensional de difracção sobre una cunha com superfícies perfeitamente condutoras. Apresenta-se a solução de Malyuzhinets a partir da abordagem global para o problema, e estende-se o resultado para o caso de impedância nas faces. Desenvolve-se a solução assintótica de Keller para o problema e a partir da formulação integral da solução exata, são introduzidos os métodos gerais para desenvolver soluções assintóticas úteis desde o ponto de vista computacional. É utilizada uma ferramenta de simulação para comparar os resultados de cálculo numérico da solução exata e de uma das soluções assintóticas do problema canônico. Encontra-se um bom acordo e verifica-se a dependência da precisão com a frequência para os métodos assintóticos.

Biografia do Autor

  • Hernan G. Triana, Universidad Icesi
    Professor (Physics and Technology Department) and researcher, member of i2t (informatics and telecommunications research group) at the Universidad Icesi (Cali, Colombia). Physicist from the Universidad del Valle (Cali, Colombia), currently pursuing a Master of Research in Computer Science and Telecommunications at the Universidad Icesi. His main areas of interest are: theory of diffraction, computational electromagnetism and radio-propagation
  • Andrés Navarro Cadavid, Universidad Icesi
    Full professor and Director of i2t (informatics and telecommunications research group) at the Universidad Icesi (Cali, Colombia). Electronics Engineer and Master in Technology Management (Universidad Pontificia Bolivariana de Medellín (Colombia), and Ph.D. in Telecommunications (Universidad Politécnica de Valencia, España). His main areas of interest are: spectrum management, radio propagation and m-health

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2016-10-06

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