Hasar, Ugur C.Ozturk, GokhanKaya, YunusAlfaqawi, Mona S. S.Barroso, Joaquim JoseErtugrul, MehmetRamahi, Omar M.2024-10-042024-10-0420230018-926X1558-2221https://doi.org/10.1109/TAP.2023.3287398http://hdl.handle.net/20.500.12403/3317A time-domain free-space extraction procedure is proposed to uniquely determine the relative complex permittivity epsilon(r)(omega) based on two sets of natural frequencies of the metal- and air-backed dielectric samples. A graphical analysis is applied for evaluating whether unique epsilon(r)(omega) can be extracted using such natural frequencies. The method is numerically validated using two dielectric samples with different epsilon(omega) for the ideal case (no noise) and under the influence of noise with different signal-to-noise ratios (SNRs).eninfo:eu-repo/semantics/closedAccessGraphical methodnatural modesparameter extractionunique solutionArticle7197690769310.1109/TAP.2023.32873982-s2.0-85163510785Q1WOS:001169294600070Q1