A. O. Kasyanov1
1 Southern Federal University (Taganrog, Russia)

The problem of printed gratings application as converters of electromagnetic waves polarization and polarizing modulators has been considered. Two directions in development of antenna engineering have been discussed in this paper. In each of them the scattering fields control of an antenna arrays allows essentially to expand functionalities of radio engineering sets. The first direction is the creation of auxiliary depolarizing reflectors for two-mirror reflector antennas and folded lenses. In addition, in twist-reflectors based on printed gratings, it is possible to constructively realize the necessary phase distributions of the field on their surfaces. Thus, it becomes possible to use such twist-reflectors to create phase-correcting twist-reflectors. The second direction is connected to application of antenna arrays for a reduction of a radar cross section of the radar-tracking targets. Transformation of a field polarization by an antenna array allows to achieve both these purposes. In an aspect of high cost and complexity of arrays experimental researches as a method of the analysis the mathematical simulation has been selected.

Besides, it has been shown that introduction of impedance loads in the construction of the reradiating elements of the printed grating opens additional possibilities for controlling the field scattered by it. Thus, twist reflectors with improved characteristics can be realized on the basis of microstrip-pin gratings.

The given results can be used for choosing the most rational electrodynamic structure geometry variant at decision of particular problems by antennas engineering. The possible flat arrays based on printed complicated shape elements application area have been also discussed and it has been shown that these arrays are the very attractive type for controllable radio-covers designing at microwaves. Some numerical results presented prove the possibility of a printed reflector arrays application as smart covers microwave modules.

Kasyanov A.O. Application of microstrip diffraction gratings for transformation of polarization of microwave waves. Antennas. 2023. № 5. P. 63–75. DOI: https://doi.org/10.18127/j03209601-202305-07 (in Russian)

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