The absence of fixed cut-off frequencies in a circular layered waveguide with lossy liquid
作者： Zoya E. Eremenko , Ekaterina S. Kuznetsova
DOI: 10.1109/MSMW.2016.7538180
关键词: Waveguide (electromagnetism) 、 Coaxial 、 Permittivity 、 Electromagnetic radiation 、 Attenuation 、 Optics 、 Range (particle radiation) 、 Materials science 、 Dielectric 、 Layer (electronics)
摘要: The wave propagation in a circular metal waveguide with central cylindrical dielectric rod and coaxial layer of absorbing liquid have been studied at the frequency range 5–30 GHz. Owing to operating frequencies can be extended up centimeter wavelength range. This fact takes place because two-layered does not fixed cutoff for modes. It has found abnormally low attenuation coefficients electromagnetic waves HE11 certain values thickness liquid. sensitivity method complex permittivity determination using thin increases comparison thick layer.
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