Avaliação dos principais modelos de admitância da sonda coaxial aberta para medidas de permissividade elétrica

Authors

  • Daniel Henrique da Silva Souza Engenharia Elétrica e Eletrônica - IME
  • José Carlos Araujo dos Santos Engenharia Elétrica e Eletrônica - IME

Keywords:

Ponta de teste coaxial, sensor coaxial, coeficiente de reflexão, medidas de permissividade

Abstract

The accurate knowledge of the dielectric properties of
materials, especially permittivity, is essential in several areas of
engineering. The present work deals with the reflective method of
dielectric characterization based on coaxial sensors. It presents an
evaluation of various admittance models available in the literature
for the sensor and a comparison between them, attempting to
identify a fast and accurate model for practical applications. In this
context, the two inherent problems to the coaxial probe method are
addressed, one related to the admittance determination as a
function of permittivity (direct problem) and another related to the
permittivity determination as a function of admittance (reverse
problem). In the present work, the solutions of the direct problem
available in the literature are addressed.

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Published

2023-09-21

How to Cite

Henrique da Silva Souza, D., & Araujo dos Santos, J. C. (2023). Avaliação dos principais modelos de admitância da sonda coaxial aberta para medidas de permissividade elétrica . Revista Militar De Ciência E Tecnologia, 39(4), 135–168. Retrieved from https://ebrevistas.eb.mil.br/index.php/CT/article/view/9896