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Features of Using the Quadrature Amplitude Modulation for Forming the Directional Pattern of an Active Phased Antenna Array

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Radiophysics and Quantum Electronics Aims and scope

We consider technical aspects of using quadrature amplitude modulation in modern microwave active phased antenna arrays. A necessity of improving the accuracy of phase adjustment for realizing complex types of the amplitude-phase distribution of signals in the antenna aperture, which is required for forming the directional patterns with a low level of side lobes, is substantiated. Special attention is paid to experimental studies of the parameters of the beamforming elements of the transceiving units based on quadrature modulators. A possibility of significant (over an order of magnitude) improvement of the accuracy of setting the specified phase of a microwave signal compared with that ensured by discrete phase shifters is discussed. Conclusions are made on the expedience, especially in the millimeter-wave range, of developing the beamforming circuits based on quadrature amplitude modulation of the carrier for modern high-quality active phased antenna arrays.

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Correspondence to P. V. Kupriyanov.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 65, No. 9, pp. 781–789, September 2022. Russian DOI: https://doi.org/10.52452/00213462_2022_65_09_781

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Gavrilov, M.M., Zorina, A.A., Kupriyanov, Z.P. et al. Features of Using the Quadrature Amplitude Modulation for Forming the Directional Pattern of an Active Phased Antenna Array. Radiophys Quantum El 65, 710–717 (2023). https://doi.org/10.1007/s11141-023-10251-1

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  • DOI: https://doi.org/10.1007/s11141-023-10251-1

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