Graphical Method for Examining Complex Natural Frequencies of Dispersive Materials

Hasar U. C., ÖZTÜRK G., Barroso J. J., Gurbuz T. U., Kaya Y., ERTUĞRUL M.

IEEE Microwave and Wireless Components Letters, cilt.31, sa.5, ss.421-424, 2021 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 5
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1109/lmwc.2021.3062584
  • Dergi Adı: IEEE Microwave and Wireless Components Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.421-424
  • Anahtar Kelimeler: Debye and Lorentz models, frequency-domain, graphical method, solution pattern, time-domain
  • Atatürk Üniversitesi Adresli: Evet

Özet

A graphical method is extended to and applied for visual inspection of solution patterns (region of complex natural frequencies $s_{n}) in the complex $s-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.