Some results of application of helical radiators in linear antenna arrays for shaping flat-topped radiation patterns
Sidorov K.M.1, Skobelev S.P.
1,2
1Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region, Russia
2PAO Radiofizika, Moscow, Russia
Email: sidorov.km@phystech.edu, s.p.skobelev@mail.ru
Electrodynamical modeling of linear antenna arrays consisting of three and five cylindrical helical radiators is carried out. The modeling includes optimization of the radiator geometrical parameters aimed at shaping flat-topped (sectorial) array element radiation patterns with providing low return loss. Some results characterizing sufficiently high quality of the flat-topped radiation patterns in the frequency band 2.7-2.9 GHz at element spacing 0.9-1.1 of wavelength, as well as influence of array edges on the element radiation pattern shape are presented. Keywords: Helical radiators, phased antenna arrays, flat-topped radiation patterns.
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