V. M. Seleznev1, O. V. Bolkhovskaya2, A. A. Maltsev3
1–3 Lobachevsky State University of Nizhny Novgorod (Nizhny Novgorod, Russia)

Problem statement. The new 5th generation mobile communications paradigm implies the deployment of small base stations and access points in the coverage areas of existing macro-cells in places with a large concentration of users (hot-spots). At the same time, the antennas used at such stations should have specially shaped radiation patterns, a high gain and the ability of scanning to track mobile users.

Objective. This article presents the results of the development of three scanning reflectarray antennas (RAAs) in the 60 GHz band that form sector, narrow beam and cosecant antenna radiation patterns (RPs). The reflectarrays have been synthesized using an iterative method in which the reference amplitude RP belonged to the class of exponential integer functions. In the paper we use the original reference functions of phase RPs, which allow a more accurate approximation to the required shape of the antenna main beam to be obtained.

Results. The characteristics of the antenna systems designed have been investigated using electromagnetic modeling in the CST Microwave studio. According to the simulation results for all the presented arrays, the shape of the main beams of the RPs corresponds to the specified reference models in the wide frequency band up to 3 GHz. The key feature of the RAA is the possibility of electronic scanning in the azimuthal plane in a ±15° sector.

Practical significance. The developed scanning RAAs may find practical applications in Wi-Fi and 5G NR communication systems in the millimeter wavelength bands.

Seleznev V.M., Bolkhovskaya O.V., Maltsev A.A. Synthesis and design of plane reflectarrays of microstrip elements for scanning antenna systems of the 60 GHz band. Antennas. 2022. № 5. P. 30–48. DOI: https://doi.org/10.18127/j03209601-202205-02

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