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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Miniaturisation of the triangular patch antenna by the novel dual-reverse-arrow fractal
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Miniaturisation of the triangular patch antenna by the novel dual-reverse-arrow fractal

机译：新型双反箭头分形使三角形贴片天线小型化

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摘要

A novel geometry called the dual-reverse-arrow fractal (DRAF) is introduced, which is the combination of two dual Koch fractals. It is implemented on an equilateral-triangular patch antenna. This structure has smaller dimensions compared to the rectangular structure and has wide applications in arrays to reduce their size. Furthermore, the use of triangular elements in array leads to the decrease of side-lobe levels. Four cases of the triangular patch are compared to show that the presented fractal geometry is effective in the miniaturisation of patch antenna and decreasing its resonance frequency, while the antenna bandwidth and efficiency are kept constant. To increase the antenna efficiency, an air space is placed under the patch. Finally, a portion of the corner of fractal triangle is cut to generate circular polarisation by proper positioning of the feed points. The proposed DRAF antenna achieved 40% reduction in size compared to the similar triangular antenna. The proposed DRAF geometry has potential applications in various radiating systems and microwave devices.
机译：引入了一种新颖的几何图形，称为双重逆向箭头分形（DRAF），它是两个双重Koch分形的组合。它在等边三角形贴片天线上实现。与矩形结构相比，该结构的尺寸更小，并且在阵列中具有广泛的应用以减小其尺寸。此外，在阵列中使用三角形元件导致旁瓣电平降低。比较了三角形贴片的四种情况，表明所提出的分形几何形状对贴片天线的小型化和降低其谐振频率有效，同时天线带宽和效率保持恒定。为了提高天线效率，在贴片下方放置了一个空气空间。最后，将分形三角形的角的一部分切掉，以通过正确定位馈电点来产生圆极化。与类似的三角形天线相比，提出的DRAF天线尺寸减小了40％。拟议中的DRAF几何形状在各种辐射系统和微波设备中具有潜在的应用。

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