A Novel Technique for Microwave Thickness Measurement of Dielectric Slabs Using an Open-Ended Rectangular Waveguide

Media consisting of a dielectric slab backed by a conducting plate are used in many facets of industry. Monitoring the thickness or permittivity uniformity of such slabs is of great importance. Ability of microwaves to penetrate inside dielectrics and its sensitivity to material inhomogeneities makes them suitable for this type measurements [1,2]