Determination of Complex Dielectric Permittivity of Loss Materials at Microwave  Frequencies

U. C. Hasar; M. F. Akay; S. N. Kharkovsky

doi:10.3390/mca8030319

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Article

1 December 2003

Determination of Complex Dielectric Permittivity of Loss Materials at Microwave Frequencies

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Department of Electrical and Electronics Engineering, Cukurova University, Adana, 01330, Turkey

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Math. Comput. Appl.2003, 8(3), 319-326;https://doi.org/10.3390/mca8030319

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Abstract

The method of determination of complex dielectric permIttIvIty of loss materials at microwave frequencies (X-band) using measured amplitudes of reflection and transmission coefficients and numerical calculations is developed. Different numerical methods namely graphical, bisection (halving), newton, and secant, are applied in order to determine the permittivity of cement-based materials. Simulation time and errors of these methods are compared. It is shown that the fastest and most accurate method is the bisection (halving) method because it is a global method.

Keywords:

Complex dielectric permittivity of loss materials; root-finding and graphical methods; cement-based materials; microwave measurement.

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