Effect of sample deformation in longitudinal axis on material parameter extraction by waveguides

Hasar U. C., Kaya Y., ÖZTÜRK G., ERTUĞRUL M.

Measurement: Journal of the International Measurement Confederation, cilt.176, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 176
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.measurement.2021.109175
  • Dergi Adı: Measurement: Journal of the International Measurement Confederation
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, INSPEC
  • Anahtar Kelimeler: Sample, Deformation, Dielectric, Waveguide, REFERENCE-PLANE INVARIANT, COMPLEX PERMITTIVITY, CONSTITUTIVE PARAMETERS, BROAD-BAND, PERMEABILITY, RETRIEVAL
  • Atatürk Üniversitesi Adresli: Evet

Özet

© 2021An analysis was performed for examining the consequences of sample deformation in longitudinal axis in the sample-loaded non-resonant waveguide techniques. Vertical and horizontal deformations were first simulated to understand the change in field distributions and corresponding scattering parameters. Then, effects of sample length, dielectric constant, and loss factor for these deformations on extracted electromagnetic properties were analyzed using simulated results. Finally, S-parameter measurements were carried out to understand the effect of vertical deformation on permittivity results and to examine any improper sample preparation by hand-made and machine-made samples by applying a statistical model based on mean, standard deviation, coefficient of variation, and confidence interval. It was noted that extracted dielectric constants of each tested dielectric sample (polyethylene, polypropylene, polyvinyl-chloride) were within the confidence interval range of 90% while their retrieved loss factors were within the confidence interval range of 90%, 95%, or 98%.