利用黎曼曲面上的优化合成反应性负载稀疏天线阵

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Albert Salmi;Anu Lehtovuori;Ville Viikari
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引用次数: 0

摘要

本文介绍了一种计算天线阵列中散射体元件反应性终端的方法。通过固定的散射体元件,我们塑造了稀疏阵列的嵌入式元件图案,将辐射聚焦到一个无光栅裂隙的有限视场中。通过优化黎曼流形上的反射系数,确定散射体元件的反应终端。此外,我们还展示了通过倾斜视场来拓宽无光栅裂隙视场的可能性。我们设计了 5 元线性和 4 乘 4 元平面反应加载天线阵列,元件间距为 1.4 波长。我们对散射元件的终端进行了优化,使阵列既能覆盖宽面定位视场,也能覆盖倾斜光栅无叶视场。通过对制造的原型进行测量,对线性阵列获得的结果进行了验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synthesis of Reactively Loaded Sparse Antenna Arrays Using Optimization on Riemannian Manifold
This paper introduces a method for computing reactive terminations for scatterer elements in antenna arrays. With the fixed scatterer elements, we shape embedded element patterns of sparse arrays to focus the radiation into a grating-lobe-free limited field of view. The reactive terminations of the scatterer elements are determined by optimizing reflection coefficients on a Riemannian manifold. In addition, we show that widening the grating-lobe-free field of view is possible by tilting the field of view. We design both 5-element linear and 4-by-4-element planar reactively loaded antenna arrays with 1.4-wavelength inter-element distances. The terminations of the scatterer elements are optimized so that the arrays cover either the broadside-located or the tilted grating-lobe-free field of view. The results obtained from the linear array are validated through measurements of manufactured prototypes.
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来源期刊
CiteScore
6.50
自引率
12.50%
发文量
90
审稿时长
8 weeks
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