Simple Nondestructive Method for the Measurement of Complex Permittivity
- 1 December 1974
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. 23 (4) , 434-438
- https://doi.org/10.1109/tim.1974.4314329
Abstract
A simple nondestructive method is presented for the measurement of the complex permittivity ϵr of materials. The reflection coefficient ρ of a flanged open-ended rectangular waveguide placed, next to a flat large sample is computed by a variational method as a function of the dielectric constant. Computer-generated charts and an optimization computer program are elaborated. ϵr can then be easily determined from the measured amplitude and phase angle of the reflected wave in the waveguide. The method is best suited for materials having high dielectric constants and large losses.Keywords
This publication has 1 reference indexed in Scilit:
- Optimization of Microwave Networks by Razor SearchIEEE Transactions on Microwave Theory and Techniques, 1969