Estimation of S-Parameters and Dielectric Permittivity of Polycor and GaAs Samples Using a Vector Network Analyzer

To study the S-parameters and dielectric permittivity of polycor GaAs samples, a vector network analyzer R4-MWM-118 with special measuring cell modified Nicholson–Ross–Weir method were used. The use polynomial Chebyshev criteria in for approximation digital filtering made it possible to reduce distortion achieved approximations S-parameters. eliminate subjective error operator analysis measurements presence “noise” component, improve qualitatively perception amplitude-frequency characteristic exclude uninformative changes instrument readings at any point frequency range. dependences amplitudes phases transmission reflection coefficients, as well samples under on range 78.33–118.10 GHz are obtained.