Title :
Measurement of complex permittivity of the highly absorbing liquids based on a two-layer circular waveguide in a wide frequency range
Author :
Scresanov, V.N. ; Eremenko, Zoya E. ; Kuznetsova, Y.S.
Author_Institution :
Usikov Inst. for Radiophys. & Electron., Kharkov, Ukraine
Abstract :
A waveguide-type cell for measuring the complex permittivity of strongly absorbing liquids in the frequency range of about two octaves is proposed. The cell is formed by a round metal waveguide with a coaxial cylindrical insert made of a dielectric with low losses. The liquid under study fills the space between the insert and the waveguide. The characteristics of modes of a two-layer waveguide with an absorbing layer of liquid are studied by means of numerical solutions of the characteristic equation for the two-layer waveguide. The results of electromagnetic simulation method used to wave excitation in such a cell are presented. The advantages of the proposed cell are compared to the known technical solutions used in the microwave dielectrometry of absorbing liquids.
Keywords :
circular waveguides; microwave measurement; permittivity measurement; absorbing layer; absorbing liquids; complex permittivity measurement; electromagnetic simulation method; highly absorbing liquid; microwave dielectrometry; round metal waveguide; two layer circular waveguide; two layer waveguide; wave excitation; waveguide type cell; Electromagnetic scattering; Frequency measurement; Liquid waveguides; Liquids; Permittivity; Permittivity measurement;
Conference_Titel :
Microwave and Telecommunication Technology (CriMiCo), 2012 22nd International Crimean Conference
Print_ISBN :
978-1-4673-1199-1
