【作者】 季宇豪； 陈春红； 付奕程； 余晓春； 杨奥；

【Author】 JI Yuhao;CHEN Chunhong;FU Yicheng;YU Xiaochun;YANG Ao;Key Laboratory of Near-Range RF Sensing ICs & Microsystems,Ministry of Education,Nanjing University of Science and Technology;

【机构】 南京理工大学近程射频感知芯片与微系统教育部重点实验室；

【摘要】 文中提出了一种低波束倾斜的小型化半模对跖Vivaldi天线设计方法。相比于传统的半模Vivaldi天线,本设计在不增加天线横向尺寸前提下,改善了由不对称结构引起的主要辐射方向偏离目标方向的问题。通过对理想电壁的轮廓进行优化并在辐射臂上加载寄生贴片,天线的波束倾斜程度得到缓解。实验结果表明,提出的天线在15GHz～150 GHz的超宽带工作频段内具有优异的阻抗匹配特性(|S11|<-10dB),同时波束倾斜程度较传统设计显著减小。更多还原

【Abstract】 This paper proposes a miniaturized half-mode antipodal Vivaldi antenna design with reduced beam tilting.Compared to conventional half-mode Vivaldi antennas,the proposed design effectively mitigates the main radiation beam deviation from the desired direction caused by asymmetric structures,without increasing the antenna’s lateral dimensions.The beam tilting of the antenna is effectively mitigated through optimization of the perfect electric wall’s contour and the loading of parasitic patches on the radiating arms.Experimental results demonstrate that the proposed antenna achieves excellent impedance matching(|S11| <-10 dB) across an ultra-wideband frequency range of 15 GHz～150 GHz,while exhibiting substantially reduced lobe tilt compared to conventional designs.更多还原