Yazarlar

• Ertugrul, Mehmet(2)
• Hasar, Ugur C.(2)
• Kaya, Yunus(2)
• Ozturk, Gokhan(2)
• Alfaqawi, Mona S. S.(1)
• Barroso, Joaquim J.(1)
• Barroso, Joaquim Jose(1)
• Gurbuz, Tolga U.(1)
• Ramahi, Omar M.(1)

• MakaleYalnız künye2023Scopus SJRQ1/r/bayburt/10766
  Extraction Method for Unique Determination of Complex Permittivity From Graphical Analysis of Natural Frequencies

  Hasar, Ugur C.; Ozturk, Gokhan; Kaya, Yunus; Alfaqawi, Mona S. S.; Barroso, Joaquim Jose; Ertugrul, Mehmet; Ramahi, Omar M.

  A 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).

  AtıfScopus1·OpenAlex1

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• MakaleYalnız künye2021Scopus SJRQ1/r/bayburt/12150
  Graphical Method for Examining Complex Natural Frequencies of Dispersive Materials

  Hasar, Ugur C.; Ozturk, Gokhan; Barroso, Joaquim J.; Gurbuz, Tolga U.; Kaya, Yunus; Ertugrul, Mehmet

  A graphical method is extended to and applied for visual inspection of solution patterns (region of complex natural frequencies sₙ) in the complexs-plane for dispersive materials characterized by the Debye and Lorentz models. These patterns are in the form of exponential decay and C-shaped profiles for the Debye and Lorentz models, respectively. Their forms are observed to be affected (e.g., moving left/right) in different manners with a variation of dispersion parameters. This method, thanks to its visual inspection capability, can help in analyzing/synthesizing filters and frequency-selective surfaces.

  AtıfScopus6·WoS6·OpenAlex7

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