Measuring permittivity of the dielectric sheet by two kinds of microwave cavities

Author

Yao, Lixia ; Ni, Zurong ; Liu, Tongzan ; Xiao, Fen

Author_Institution

Dept. of Phys., Xiamen Univ., Xiamen, China

fYear

2010

Firstpage

91

Lastpage

93

Abstract

The formulas were derived for the calculation of the permittivity of dielectric measured in TE₁₀₉ mode rectangular cavity and TE₀₁₁ mode cylindrical cavity. A testing system based on scalar network analyzer was adopted to measure the same sheet dielectric by the two cavities above respectively. The testing software based on LABVIEW was developed. The results showed that the measuring error was less than 3.8% and repeatability error was than 1.1% by perturbation method in rectangular cavity, while those are 0.4% and 0.3%, by using cylindrical cavity. The automatic measurement of permittivity of dielectric sheet can be achieved by perturbation method in cylindrical cavity.

Keywords

dielectric materials; electronic engineering computing; microcavities; microwave circuits; permittivity measurement; perturbation theory; sheet materials; LABVIEW; TE₀₁₁ mode cylindrical cavity; TE₁₀₉ mode rectangular cavity; dielectric sheet permittivity measurement; measurement error; microwave cavities; microwave circuit; scalar network analyzer; sheet dielectric measurement; testing software; testing system; Cavity resonators; Dielectrics; Microwave measurements; Microwave theory and techniques; Permittivity; Permittivity measurement; LABVIEW; Microwave cavity; Permittivity; Perturbation method;

fLanguage

English

Publisher

ieee

Conference_Titel

Anti-Counterfeiting Security and Identification in Communication (ASID), 2010 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-6731-0

Type

conf

DOI

10.1109/ICASID.2010.5551830

Filename

5551830