Dispersion peculiarities of hybrid modes in a circular waveguide filled by a composite gyroelectromagnetic medium

TL;DR

This paper investigates the unique dispersion properties of hybrid modes in a circular waveguide filled with a composite gyroelectromagnetic medium, revealing diverse behaviors influenced by geometry and material properties.

Contribution

It derives the dispersion equation and eigenmodes for such waveguides, providing new insights into mode classification and dispersion characteristics in gyroelectromagnetic fillings.

Findings

Modes exhibit diverse behaviors near resonance frequencies.

Strong combined geometrical and material dispersion effects.

Hybrid HE and EH mode characteristics are distinguished.

Abstract

Extraordinary dispersion features of a circular waveguide filled by a longitudinally magnetized composite gyroelectromagnetic medium are studied. The composite medium is considered to be constructed by juxtaposition together of magnetic and semiconductor layers providing all characteristic dimensions of the resulting multilayered system are much smaller than the wavelength in the corresponding part of the composite medium. The waveguide dispersion equation and its eigenmodes are derived. The mode classification is made in a standard manner so that the guided modes are sorted into a class of hybrid HE and EH waves in terms of their unique dispersion characteristics. The numerical results are obtained in the band near the frequencies of corresponding resonances in constitutive materials of the composite medium, and they show that the modes behaviors become to be quite diverse due to manifestation of a strong combined geometrical and material dispersion related to the waveguide parameters and gyroelectromagnetic filling, respectively.