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Miniaturized Fractal Reflectarray Element Using Fixed-Size Patch
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DOI：10.1109/LAWP.2014.2341032.png)
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摘要
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A Minkowski fractal-shaped patch is proposed for the design of a reduced-size reflectarray element. The intrinsic miniaturization capability of the fractal geometry is fully exploited by leaving unchanged the patch length, while using the fractal scaling factor to obtain a good reflectarray phase agility. The achieved size reduction effect allows to choose array grids with smaller interelement spacing, thus offering the opportunity to have wide-angle scanning capabilities. As validation test, a fractal-shaped X-band reflectarray element, embedded into a 0.3 lambda x 0.3 lambda cell, is designed to give a high phase agility range, greater than 300 degrees. Furthermore, the design and the experimental validation of a 15 x 15 reflectarray prototype are presented to prove the fixed-beam large angle pointing ability.
Keyword:
Arrays
fractal antennas
microstrip antennas
reflectarrays
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4.8
论文数:
1.0W
被引数:
2.8W
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