【作者】 陆佳玲； 史一童； 刘菁； 于志强； 周健义；

【Author】 LU Jialing;SHI Yitong;Liu Jing;YU Zhiqiang;ZHOU Jianyi;School of Information Science and Engineering,Southeast University;Purple Mountain Laboratories;

【机构】 东南大学毫米波国家重点实验室； 紫金山实验室；

【摘要】 本文设计了一款加载L型槽的高增益超宽带Vivaldi天线。在传统Vivaldi天线的辐射贴片两侧对称地刻蚀"L"形缝隙来扩展天线的阻抗带宽,在指数型槽线开口处加载三角形金属贴片来提高天线增益,并使用多级馈电匹配线来改善天线的阻抗匹配特性。实测结果表明该天线在3.8-11.3 GHz频带范围内具有良好的辐射特性,相对带宽为99.34%,最大增益为8.4 dBi,与仿真结果较为吻合。更多还原

【Abstract】 An ultra-wideband(UWB) high-gain Vivaldi antenna is designed in this paper.The impedance bandwidth of the traditional Vivaldi antenna is extended by symmetrically etching "L" shaped slots on both sides of the radiation patch.A triangular metal patch is added at the opening of the exponential slot line to increase the antenna gain.Also,the impedance matching characteristics of the antenna is improved by using the multi-level feed matching lines.The test results show that the antenna has good radiation characteristics in the band of 3.8-11.3 GHz,with the relative bandwidth of 99.34%,and the maximum gain of 8.4 dBi,in good agreement with the simulation results.更多还原