Title :
A new method of obtaining the permittivity of liquids using in-waveguide technique
Author :
Ogunlade, Olumide ; Pollard, Roger D. ; Hunter, Ian C.
Author_Institution :
Sch. of Electron. & Electr. Eng., Leeds Univ., UK
fDate :
6/1/2006 12:00:00 AM
Abstract :
This letter presents a method of measuring the permittivity of a liquid contained inside a waveguide, having a four-boundary arrangement. Previous methods employ an expression for the total transmission through a four boundary cell. We present a new method in which the permittivity is obtained by de-embedding the S-parameters of the sample from the S-parameters measured for the whole assembly. The advantage of this method is that it can also be used when the permittivity of the material housing the liquid is not accurately known.
Keywords :
S-parameters; microwave measurement; permittivity measurement; waveguides; complex permittivity measurement; four-boundary arrangement; liquid permittivity; waveguides; Assembly; Dielectric materials; Flanges; Frequency measurement; Liquid waveguides; Permittivity measurement; Propagation constant; Reflection; Solids; Transmission line matrix methods; Complex permittivity measurement; liquids; waveguides;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.875594
