E.I. Minaklov1, S.N. Razinkov2, О.E. Razinkova3

1 Tula State University (Tula, Russia)

2,3 MESC of AF “Air Force Academy named alter Professor N.Ye. Zhukovsky and Yu.A. Gagarin” (Voronezh, Russia)

1 eminakov@bk.ru, 2 razinkovsergey@rambler.ru, 3 olgarazinkovaic@icloud.com

Problem formulation. Artificial coatings with anisotropic reflective properties are an effective means of protecting objects from detection by radar monitoring systems. Meta-materials are homogeneous dielectric media, which include conductive chiral elements. Among the elements most common in the practice of synthesis of protective coatings are spiral structures based on open rings with parallel segments adjacent to the edges of the breaks. In order to study the secondary electromagnetic radiation of the chiral element in the interests of rational selection of design parameters in accordance with the requirements for the reflective characteristics of the coating, the issues of constructing its electro-dynamic model and analyzing the laws of excitation by an electric field of an external source become important. Scattering diagrams of radio pulses by the results of solving mathematically incorrect systems of integral equations with space-time differential operators relative to equivalent axial distributions of currents and charges on the ring and connected sections by the method of sequential time progression are determined.

Purpose. Investigation of scattering properties of chiral element at various types of envelopes and values of frequency-time parameters of irradiating radio pulses.

Results. Based on partial inversion of operators of integral equations recorded in approximation of wire structure at initial and boundary conditions for irradiating electric field, distribution of equivalent axial currents and charges of chiral element in the form of products of sequences of spatial and temporal basis functions is found. Using asymptotic representation of electric field intensity in far zone, energy scattering diagram of radio pulses with rectangular and Gaussian envelopes on chiral element is calculated.

Practical significance. The identified patterns of secondary electromagnetic radiation make it possible to substantiate the dimensions of chiral elements with the required scattering properties and to determine the reflection coefficient of the meta-material coating. As a result, it becomes possible to assess the degree of reduction of secondary electromagnetic radiation of an object with a chiral shell in the operating frequency ranges of radar systems.

The work was carried out with the financial support of a Grant in the form of a research grant from the Committee on Science and Innovation of the Tula Region No. 15 dated June 21, 2024.

Minaklov E.I., Razinkov S.N., Razinkova О.E. Energy scattering diagram of radio pulses on the conductive element of the chiral material // Radioengineering. 2026. V. 90. № 9. P. 118−127. DOI: https://doi.org/10.18127/j00338486-202609-12

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