Grating-Lobe Suppression of Non-uniform Large-Element-Spacing Antenna Arrays

Large-element-spacing (LES) arrays provide cost-effectiveness and structural simplicity. However, they experience the drawback of excessive grating lobes. In this study, we tackle the problem by introducing a metasurface lens positioned above a non-uniform LES array. The purpose is to manipulate and...

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Bibliographic Details
Published in2023 IEEE 6th International Conference on Electronic Information and Communication Technology (ICEICT) pp. 884 - 885
Main Authors Wang, Zhengmei, Ge, Yuehe, Chen, Zhizhang
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.07.2023
Subjects
Analytical models
Aperture antennas
Brain modeling
Electromagnetic scattering
grating-lobe
large-element-spacing
metasurface lens
Metasurfaces
non-uniform
Phased arrays
Prototypes
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Summary:Large-element-spacing (LES) arrays provide cost-effectiveness and structural simplicity. However, they experience the drawback of excessive grating lobes. In this study, we tackle the problem by introducing a metasurface lens positioned above a non-uniform LES array. The purpose is to manipulate and correct the phase characteristics of the near fields produced by the array; in doing so, the grating lobes are reduced or eliminated. Theoretical analysis and simulations of an example design are conducted. The results show that this approach can not only mitigate the grating lobes from the non-uniform LES array but also increase the antenna gain and aperture efficiency.
ISSN:2836-7782
DOI:10.1109/ICEICT57916.2023.10244970