Left-handed propagation characteristics of a dielectric and metal-loaded periodic circular waveguide

In this paper, a periodic dielectric/metallic rod is located in a circular waveguide to obtain left-handed operation. Two geometries of the dielectric/metallic rod are proposed and examined. The dispersion characteristics of the investigated waveguides are obtained using a surface impedance model. M...

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Bibliographic Details
Published in:Journal of electromagnetic waves and applications 2017-11, Vol.31 (16), p.1698-1710
Main Authors: Kusiek, Adam, Mazur, Jerzy
Format: Article
Language:English
Subjects:
circular waveguide
dielectric/metallic rod
leaky-wave antenna
Left-handed
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Summary:In this paper, a periodic dielectric/metallic rod is located in a circular waveguide to obtain left-handed operation. Two geometries of the dielectric/metallic rod are proposed and examined. The dispersion characteristics of the investigated waveguides are obtained using a surface impedance model. Moreover, equivalent circuit models are proposed allowing for calculation of the dispersion characteristics and scattering parameters of the considered waveguide structures. The numerical results are compared with those obtained from commercial software and from experiment. The obtained results prove the left-handed properties of the investigated structures.
ISSN:0920-5071
1569-3937
DOI:10.1080/09205071.2017.1360802