Patent Document ID: 8577632
Application ID: 13009541

Base Claim:
1. A method of identifying complex permittivity of transmission line dielectric by executing computer-executable instructions stored on a nontransitory computer-readable medium, the method comprises the steps of: measuring scattering parameters (S-parameters) for at least two transmission line segments of different length and substantially identical cross-section filled with the investigated dielectric; determining non-reflective, generalized modal scattering parameters of the said transmission line segment difference based on the measured S-parameters of two transmission line segments; computing generalized modal scattering parameters of the line difference segment by solving Maxwell's equations for geometry of the line cross-section with a given frequency-dependent complex permittivity dielectric model; wherein for the said generalized s-parameter model uses a given frequency-dependent complex permittivity dielectric model and guess values of the model parameters; and changing dielectric model type and parameters until computed and measured generalized modal scattering parameters match.

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Claim 2:
2. The method of identifying complex permittivity of transmission line dielectric by executing computer-executable instructions stored on a nontransitory computer-readable medium of claim 1 , wherein the said measuring scattering parameters may be measured using network analyzer including Vector Network Analyzer (VNA) or Time-Domain Network Analyzer (TDNA) or any other instrument or model that measures complex scattering parameters (S-parameters) of a multiport structure; wherein the standard Short-Open-Load-Through (SOLT) calibration of VNA to the probe tips or to the coaxial connector may be optionally used for the said measurement of S-parameters for the said two line segments.