Title :
Measurement method of permittivity variations of loss liquid materials
Author :
Barbosa, M. ; Lefeuvre, S.
Author_Institution :
UFPB, Campina Grande, Brazil
Abstract :
A new approach to permittivity measurement applied to loss materials is examined. The method proposed is based on the utilisation of a waveguide bridge and the precise knowledge of the field. Liquid dielectrics are the main focus, but the approach applies to other materials. A finite element method is used near to the dielectric. A modal decomposition is employed far from the source. Experimental measurement acquisition reveals a standing wave curve between two samples. The experimental results are compared to the theoretical curves
Keywords :
dielectric liquids; dielectric loss measurement; finite element analysis; microwave measurement; permittivity measurement; waveguides; dielectric loss; experimental measurement; field; finite element method; liquid dielectrics; liquid materials; microwave applications; modal decomposition; permittivity measurement; standing wave curve; waveguide bridge; Bridge circuits; Dielectric liquids; Dielectric materials; Dielectric measurements; Finite element methods; Geometry; Loaded waveguides; Loss measurement; Permittivity measurement; Postal services;
Conference_Titel :
Microwave and Optoelectronics Conference, 1995. Proceedings., 1995 SBMO/IEEE MTT-S International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2674-1
DOI :
10.1109/SBMOMO.1995.509610
