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Microwave Conductivity Measurements of High Conductive Polyaniline Films

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Abstract:

This article presents several techniques for determining the complex conductivity of highly electrically conducting polymer films at microwave frequencies. The advantages and disadvantages of these techniques are discussed. Microwave measurements were investigated using resonant cavity, reflection/transmission, and impedance surface techniques. The dc conductivity was measured using the four wires technique. Polyaniline(PANI/DEHEPSA)films of 120μm thickness have conductivity of(5000–6000S/m)and permittivity of 6000±1000 over X and S bands. The high values of the measured conductivity and its weak dependence on frequency at least up to 12GHz confirm the metallic character of Pani films and their efficient use in microelectronic technology such as microwave integrated circuits(MMIC)and microwave devices.

Keywords: Conductivity; Microwave; Permittivity; Polyaniline films

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/10236660490890493

Affiliations: 1: Laboratoire de Physique des Interactions Ondes-Matières, UMR CNRS, Pessac, France 2: Département de Physique, Tunis, Tunisia

Publication date: January 1, 2004

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