Engineering Commons^™

Simultaneous Evaluation Of Multiple Key Material Properties Of Complex Stratified Structures With Large Spatial Extent, Mojtaba Behzad Fallahpour, Hamed Kajbaf, Mohammad Tayeb Ahmad Ghasr, Joseph Toby Case, R. Zoughi

Electrical and Computer Engineering Faculty Research & Creative Works

Measured complex reflection coefficient of a spatially-extended stratified composite structure, using an open-ended waveguide, can be effectively used to extract key material and geometrical characteristics of any given layer. This is accomplished using a combination of an electromagnetic model and corresponding measurement data. Previously, it was shown that one parameter can be extracted if all others are known. However, practically it is desirable to extract as many pieces of information as possible. To this end the model must be "inverted". However, there is no closed-form solution for the inverse problem, given the mathematical complexity of the forward model. Consequently, we …