N.I. Dubchenko1, I.V. Malyshev2, N.V. Parshina3, E.V. Nikolaev4

1–4 Institute of Nanotechnologies, Electronics and Equipment Engineering of the SFU (Taganrog, Russia)

1 ivmalyshev@sfedu.ru, 2 nparshina@sfedu.ru, 3 ndubchenko@sfedu.ru, 4 enikolaev@sfedu.ru

The article discusses passive chiral-like structures located above a strip-type microwave transmission line, providing attenuation in a given narrow frequency band. The relevance of the work is due to the need to develop compact and efficient methods for controlling the amplitude-frequency characteristics of microwave transmission lines without significantly complicating their design and compromising alignment with the signal source. Three spatial configurations of surface chiral-like structures (a double annular split resonator, a double angular split resonator, and a two-way gammadion) integrated into the strip transmission line are selected as objects of study and comparison. The purpose of the work was to conduct an electrodynamic analysis of these structures, identify the features of their frequency characteristics, as well as determine the advantages and limitations of each configuration in terms of attenuation level and matching with the input of the transmission line. The study was performed by numerical simulation in the CST Studio Suite software package. As a result of the simulation, the amplitude-frequency characteristics of the transmission lines for each surface configuration were obtained, and the reflection and transmission parameters were calculated. A comparative analysis of these three configurations was carried out, which showed that the structure with a double annular split resonator provides the greatest attenuation in the bandwidth. At the same time, it was established that this structure is inferior to the gammadion configuration in terms of the criterion of matching with the input of the transmission line, which can lead to an increase in the level of reflected power. The practical significance of the work lies in the possibility of using the results obtained in the design of microwave transmission lines with specified frequency properties, as well as in choosing the optimal configuration of surface structures to achieve a given level of attenuation and reflection. The results of the study are presented in the form of graphs and tables.

Dubchenko N.I., Malyshev I.V., Parshina N.V., Nikolaev E.V. Comparative analysis of some surface chiral-like structures notch resonant properties in strip-type microwave transmission lines // Electromagnetic waves and electronic systems. 2026. V. 31. № 4. P. 125−134. DOI: https://doi.org/10.18127/j15604128-202604-11

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