Implementation of a beamforming device based on an aplanatic lens for the implementation of a radar scanning antenna system

The article considers a beamforming device based on an aplanatic lens, which is formed on the basis of a polystyrene filling, enclosed in a waveguide system. The developed system has the ability to implement amplitude-phase distribution in a wide range of operating frequencies by feeding the input group of twenty-five ports, which ensure the implementation of beamforming on the output of thirteen ports. To improve the efficiency of the developed device, twelve ballast ports were integrated into the design of the beamforming device, which provide suppression of spurious emissions, as well as trajectories of electromagnetic wave propagation. The results presented in the work show that the proposed beamforming system allows for control of the characteristics of the amplitude-phase distribution in a wide frequency range, while ensuring minimal losses and high efficiency of electromagnetic wave transmission. To confirm the operability of the developed beamforming device, modeling was performed both as a separate system and as a beamforming system for the radar antenna system. The obtained results showed that the use of the beamforming system allows for scanning of the antenna beam in a wide range of operating frequencies, which is especially in demand in radar systems, as well as in the implementation of simultaneous frequency and amplitude-phase scanning by the antenna system.

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