K.M. Sidorov1, S.P. Skobelev2

1,2 PJSC Radiofizika (Moscow, Russia)

1,2 Moscow Institute of Physics and Technology (National Research University) (Dolgoprudny, Russia)

1 sidorov.km@phystech.edu; 2 s.p.skobelev@mail.ru

In the presented work we proposed a new approach for shaping flat-topped element patterns in linear and planar arrays designed for beam-scanning in a specified limited angular area. The proposed approach is based on the use of waveguide elements comprising multimode hexagonal sections, the coupling between which is provided through transverse and longitudinal slots of a certain dimension for shaping overlapped subarrays.

The preliminary results of modeling of three-element linear arrays, as well as seven- and nineteen-element planar arrays, including optimization of the array element geometric parameters, are presented in the work. It is shown that the quality of the array element pattern sector shape corresponds to excitation of the overlapped subarrays including the central element and the nearest adjacent elements.

The subsequent studies on the topic of the work can include the use of the modern methods of optimization to improve the quality of shaping flat-topped element patterns and a study of the array edge effects on the element pattern shape.

Sidorov K.M., Skobelev S.P. Phased array antennas of coupled multimode waveguides of hexagonal cross-section with flat-topped
radiation patterns. Radiotekhnika. 2022. V. 86. № 4. P. 42−49. DOI: https://doi.org/10.18127/j00338486-202204-06 (In Russian)

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