Modeling, Analysis, and Comparison of Rectangular Waveguide Structures Having Glide Symmetrical Step Discontinuity with Periodic Dielectric Loading

Year 2024, Volume: 17 Issue: 3, 826 - 839, 31.12.2024

Agah Oktay Ertay

https://doi.org/10.18185/erzifbed.1564348

Abstract

This paper presents an analysis of the dispersion and |S_21 | frequency characteristics of three periodic structures constructed in rectangular waveguides. Unit cells with dielectric-loaded step discontinuities based on double steps, symmetric double steps, and glide-symmetric double steps were investigated using full-wave electromagnetic simulation software. All dispersion diagram results obtained from the three different models are compared to each other by fixing the period of the unit cell (p = 13.68mm) for each periodic structure. |S_21 | frequency characteristics of the first propagating mode are examined for finite implementations of all considered structures. The transmission characteristics of different numbers of periodic arrangements of each periodic unit cell were investigated. Then, the effect of geometric variations, including glide symmetry, on the transmission characteristics is investigated by keeping the number of unit cells constant (N=10). Furthermore, the filter performance characteristics of the proposed structure are compared with those of the reported studies in the open literature.

Keywords

dispersion analysis, glide symmetry, periodic structures, rectangular waveguides, step discontinuity

Ethical Statement

There are no ethical issues regarding the publication of this study.

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