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- Dissipation factor and permittivity estimation of dielectric substrates using a single microstrip line measurementPublication . Gonçalves, Ricardo; Magueta, Roberto; Pinho, Pedro; Carvalho, NunoThe knowledge of the dielectric properties of materials, for the design of several components and circuits at high frequencies, is mandatory. In this paper, we present a simple method for the estimation of the dissipation factor (loss tangent) of dielectric materials based on the reflection measurement of a single microstrip line, which is applied to some common known materials, such as FR-4 and Rogers RO3010 laminates. The obtained results match well with the data on the literature for the considered materials.