Direct solution for dielectric properties of a lossy two-layeredmaterial

A technique for calculating the dielectric constants of both layers, the loss tangent, and the upper-layer thickness of a lossy two-layered stratified dielectric material is presented. The method requires measurement of the complex voltage reflection coefficient over the frequency range between a maximum and adjacent minimum of the cyclic frequency response. A noniterative solution for dielectric properties is given in terms of a function of the reflection coefficient at the air-media interface. The application of this procedure to measure the moisture content of stratified soils is discussed