Title :
Measurement of dielectric constant and loss tangent of epoxy resins using a waveguide approach
Author :
Akhtar, M.J. ; Feher, L. ; Thumm, M.
Author_Institution :
Institut fur Hochleistungsimpuls- und Mikrowellentechnik, Forschungszentrum Karlsruhe
Abstract :
A waveguide based technique to measure the dielectric constant and the loss tangent of epoxy resins and viscous liquids at 2.45 GHz is presented. The method is based on the measurement of reflection and transmission coefficient data of the liquid sample by placing them in a glass tube, which is then inserted inside the WR-340 waveguide. The measured setup is simulated with the help of a numerical method, and the error between the simulated and the measured scattering data is minimized using an optimization algorithm in order to reconstruct the dielectric properties of test samples
Keywords :
dielectric losses; electromagnetic wave reflection; electromagnetic wave scattering; electromagnetic wave transmission; optimisation; permittivity measurement; polymers; waveguide theory; 2.45 GHz; WR-340 waveguide; dielectric constant measurement; dielectric properties; epoxy resins; loss tangent; optimization algorithm; reflection measurement; scattering data; transmission coefficient data; viscous liquids; waveguide approach; waveguide based technique; Dielectric constant; Dielectric loss measurement; Dielectric measurements; Epoxy resins; Glass; Liquid waveguides; Loss measurement; Optimization methods; Reflection; Scattering;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711286
