A NOVEL MODEL FOR DETERMINING THE REFLECTION AND TRANSMISSION CHARACTERISTICS OF RO-4350B MATERIALS BY MICROSTRIP LINE TECHNIQUE
AbstractIn this work, we present a method for determining the complex permittivity of RO-4350B materials using microstrip line technique. The reflection and transmission coefficients (S11 and S21) of materials are determined from the measured scattering parameters, which obtained by the solution of the spatial distribution of the electric field to the boundary conditions. The complex effective permittivity is calculated from the complex propagation constant, in turns received from S11 and S21. Our results indicate that the dielectric constant and loss tangent of RO-4350B materials are quite stable in the frequency range of 0.5-12.5 GHz.
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