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New Formulation for Evaluating Complex Permittivity of Low-Loss Materials

Muqaibel, A. and Jazi, A. (2003) New Formulation for Evaluating Complex Permittivity of Low-Loss Materials. In: IEEE-APS, Columbus, Ohio.

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A widely used method for non-contact electromagnetic characterization of materials is based on the measurement of an 'insertion transfer function'. This function is related to the complex dielectric constant of the material through a transcendental equation which can be solved numerically using a two-dimensional root search technique. Solving this complex equation is often time consuming due to slow convergence and the existence of spurious solutions. In this article, a new formulation is presented which facilitates the evaluation of complex dielectric constant of low-loss materials by means of real equations, thus requiring only one-dimensional root search techniques. A wooden slab is characterized using the new formulation. The results for loss tangent and dielectric constant are in excellent agreement with those obtained from the complex equation.

Item Type:Conference or Workshop Item (Paper)
Date:June 2003
Date Type:Publication
Divisions:College Of Engineering Sciences > Electrical Engineering Dept
Creators:Muqaibel, A. and Jazi, A.
ID Code:1060
Deposited By:Mr. Md. Ahsanul Alam
Deposited On:21 Apr 2008 10:48
Last Modified:12 Apr 2011 13:08

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