Optimization of antenna array pattern for uniformly excited rectangular array via thinning
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Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
King Saud University
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Antenna arrays have a wide variety of uses, such as radar, military systems, and wireless communications. The performance of communication system depends heavily on the antenna arrays designing. The major challenges in designing such arrays are the high sidelobe levels and the enormous number of elements. Recently, the optimization techniques that exploit the evolutionary algorithms have been used extensively for thinning the antenna arrays with the aim of reducing the power consumption and improving the radiation pattern by decreasing the sidelobe levels. However, due to the stochastic nature of the resolution algorithms, the achievement of a global optimal for such algorithms is not assured. Based on the combination theory, this paper adopts an element by element removing strategy for thinning planar arrays. Without loss of generality, a uniformly excited 25 elements rectangular array with isotropic elements is investigated as an example. The proposed thinning method examines all the possible arrangements of the placements of 25 elements in the phased array aperture. In order to achieve the desired characteristics of radiation pattern, the optimum position of elements is selected. The results show that with the 40% thinning percentage, the same radiation pattern for the full array (without thinning) could be achieved. Consequently, a considerable reduction in resources usage can be attained in terms of power consumption, the number of phase shifters, and the number of attenuators. © 2021 The Authors
Açıklama
Anahtar Kelimeler
Antenna Radiation Patterns, Planar Arrays, Sidelobe Level Reduction, Thinned Arrays
Kaynak
Journal of King Saud University - Engineering Sciences
WoS Q Değeri
Scopus Q Değeri
Q1
