Magnetostatic microwaves in circular dielectric waveguide with anisotropic uniaxial μ -negative media

Moradi A., TÜRKER TOKAN N.

Applied Physics A: Materials Science and Processing, cilt.129, sa.3, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 129 Sayı: 3
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1007/s00339-023-06409-3
  • Dergi Adı: Applied Physics A: Materials Science and Processing
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex
  • Anahtar Kelimeler: Dispersion relation, Magnetostatic wave, Microwave propagation, Negative permeability media, Waveguide
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

© 2023, This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.The quasi-magnetostatic (briefly, magnetostatic) microwaves propagation in a long, circular cross-section waveguide made of an anisotropic uniaxial μ-negative medium (here, a metamaterial consisting of split-ring resonators) is studied by using the quasi-static Maxwell’s equations. Such waves do not exist in a circular dielectric waveguide made of an isotropic μ-negative medium. A Laplace equation for the magnetostatic potential of the system is obtained and solved. We derive the dispersion relation for the modes and present numerical solutions. Also, general expressions are derived and illustrated graphically for the power flow and the energy density of the different magnetostatic modes. Physically, these magnetostatic waves owe their existence to the anisotropic property of the system, where in the absence of this property, they disappear.