| 摘要: |
| 本文提出了一种基于非周期瓦片（也称为“Einstein”瓦片）实现天线阵面密铺的方法，由于非周期瓦片构造的天线阵面具有天然非对称性，可以有效抑制大间距稀疏阵面的栅瓣电平。该天线阵面布局的突出优点是仅需一种非周期瓦片就可以实现平面阵完全无交叠、无间隙的拼接，且在拼接过程中无需依赖优化算法就可以完成平面密铺，相比于需要借助复杂的优化算法的周期瓦片的密铺阵面，本文的布局方法大大降低了优化成本。另外，仅需对瓦片内少量的天线单元进行位置优化，就可以获得优异的栅瓣抑制效果，对于有限视场扫描雷达来说，本文提出的阵面布局方法是非常具有吸引力。文中详细描述了天线阵面的布局及栅瓣抑制度，通过仿真计算验证了该方法的可行性。 |
| 关键词: 非周期瓦片 栅瓣抑制 有限视场 相控阵天线 |
| DOI： |
| 分类号:TN82 |
| 基金项目:国家自然科学基金项目 No. 61771237 |
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| Application of An Aperiodic Monotile in Limited-Scan Phased Array |
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| Abstract: |
| This article presents a non-periodic monotile(also known as an "Einstein" tile) tiling method for antenna arrays. The antenna array constructed from aperiodic tiles inherently possess natural asymmetry, which can effectively suppress the grating lobe levels of large-spacing sparse arrays. A notable advantage of this layout is that it requires only one type of aperiodic tile to achieve a completed plane to be strictly tiled without overlap or gaps, without the need for optimization algorithms during the dense packing process. In contrast to periodic tiles, which necessitate complex optimization algorithms for dense array packing, the proposed method significantly reduces optimization costs. Furthermore, by optimizing the positions of a small number of antenna elements within the tile, excellent grating lobe suppression can be achieved. For radar with a finite field of view scanning, the proposed array layout method is highly attractive. The paper provides a detailed description of the antenna array layout and grating lobe suppression, and verifies the feasibility of the method through simulation calculations. |
| Key words: aperiodic monotile grating lobe einstein tile limited-scan phased array. |