【摘要】 一种蝴蝶形增益增强型天线的超表面结构，由5×5阵列单元结构作为天线罩，以适当距离放置在辐射天线的正上方时，微带贴片天线增益可以得到大幅增强，同时工作带宽也得到提升。天线罩通过调整电磁波的相位分布和能量再分配来实现辐射方向的优化。超表面结构经过开矩形槽和切割三角形来实现相位的均匀分配，使辐射波束能量更加集中，从而显著提升增益。在中心频率5 GHz处，天线增益从7.33 dBi提升到16.24 dBi,工作带宽从4.81～5.09 GHz(5.6%)展宽到4.66～5.09 GHz(8.0%)。天线罩也可拓展于其他类型的天线，实现特定天线的工作频带展宽和辐射增益增强。更多还原

【Abstract】 A butterfly-shaped gain-enhanced metasurface antenna structure employs a 5×5 array unit structure as an antenna radome. When positioned at an appropriate distance directly above the radiating antenna,it significantly enhances both the gain and operating bandwidth of the microstrip patch antenna. The radome optimizes the radiation direction by adjusting the phase distribution and redistributing the energy of electromagnetic waves. The metasurface structure achieves uniform phase allocation through rectangular slots and triangular cuts, thereby concentrating the radiation beam energy more effectively and significantly enhancing gain. At the central frequency of 5 GHz,the antenna gain increases from 7.33 d Bi to 16.24 d Bi,while the operating bandwidth expands from 4.81 ～ 5.09 GHz( 5.6%) to 4.66 ～ 5.09 GHz( 8.0%).The radome can also be extended to other types of antennas, enabling bandwidth broadening and radiation gain enhancement for specific antenna systems.更多还原