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Broadband complex permittivity measurement techniques of materials with thin configuration at microwave frequencies
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10.1063/1.2115099
/content/aip/journal/jap/98/8/10.1063/1.2115099
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/8/10.1063/1.2115099

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of the sample section under consideration.

Image of FIG. 2.
FIG. 2.

Propagation diagram of multiple reflections in a thin parallel-plate capacitor terminating coaxial waveguide.

Image of FIG. 3.
FIG. 3.

Design of a microwave fixture used in this work.

Image of FIG. 4.
FIG. 4.

Frequency dependence of the complex permittivity of ethanol obtained by the approach of Eq. (16). The symbols describe the data measured. The solid line is the best fit using the model function (Debye function).

Image of FIG. 5.
FIG. 5.

Complex permittivity of powder. (a) is obtained by the conventional approach [Eq. (11)] (lumped capacitance method). (b) is obtained by Eq. (17) considering an electrical delay of 1.2 ps.

Image of FIG. 6.
FIG. 6.

Complex permittivity of powder. is obtained by the conventional approach [Eq. (11)]. is obtained by the approach of Eq. (16) considering an electrical delay of 1.2 ps.

Image of FIG. 7.
FIG. 7.

Complex permittivity of mixture. is obtained by the conventional approach [Eq. (11)]. is obtained by the approach of Eq. (16) considering an electrical delay of 1.0 ps.

Image of FIG. 8.
FIG. 8.

Frequency dependence of the complex permittivity of the PVC film.

Image of FIG. 9.
FIG. 9.

Frequency dependence of dielectric of (A) PVC, (B) PET, (C) PEN, and (D) PMMA films.

Image of FIG. 10.
FIG. 10.

Frequency dependence of dielectric of the PS film.

Image of FIG. 11.
FIG. 11.

Frequency dependence of dielectric of the PVC powder at 293, 323, and 353 K.

Tables

Generic image for table
Table I.

Dielectric dispersion parameters of ethanol at 293 K.

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/content/aip/journal/jap/98/8/10.1063/1.2115099
2005-10-24
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Broadband complex permittivity measurement techniques of materials with thin configuration at microwave frequencies
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/8/10.1063/1.2115099
10.1063/1.2115099
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