N. I. Bobkov1, V. V. Prozhivalsky2
1, 2 JSC “VNII “Gradient” (Rostov-on-Don, Russia)

1 ua6lac@mail.ru, 2 prow@inbox.ru

The modeling has been used to study the radiation characteristics of a hybrid multibeam lens antenna in a frequency band with a relative overlap of 4:1. The antenna feed is a linear cluster array. The design features of hybrid lens antennas have been considered. The results of a numerical study of the effect of the feeder sidelobe level on the stability of the shape and width of the partial radiation patterns, as well as on the stability of the direction-finding characteristics of the lens antenna have been presented. Using a two-channel cylindrical dielectric lens antenna as an example, the possibility of forming frequency-independent directivity characteristics in a four-fold frequency band while maintaining the width of the partial beams of 8.3°±0.5° has been shown, while the steepness of the direction-finding characteristics varies from 3 to 3.8 dB/deg.

Bobkov N.I., Prozhivalsky V.V. Features of the formation of direction-finding characteristics of broadband multi-beam lens antennas. Antennas. 2025. № 6. P. 42–47. DOI: https://doi.org/10.18127/j03209601-202506-05 (in Russian)

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