电波科学学报2016，Vol.31Issue(6)：1099-1106,8.DOI:10.13443/j.cjors.2016102601
一种超宽带、大扫描角Vivaldi天线阵列
An ultra-wideband vivaldi array with large scanning angle
摘要
Abstract
A double-faced Vivaldi antenna is designed and tested.Through optimizing structure design,the feeding efficiency and the impedance bandwidth of the antenna are improved.Meanwhile,the mutual coupling between the elements is greatly reduced when the antenna is used for an array.The measured results show the return loss of the presented antenna is less than-10 dB from 2 to 8 GHz and the average gain is larger than 5 dBi.An ultra-wideband array is also formed by the Vivaldi antenna.In this array,the idea of "staggered arrangement" is adopted.This method can effectively solve the contradiction between the sizes and the spacing of antenna elements.So,the grating lobe of the array is suppressed,and the beam scanning angle range is markedly increased.The simulation analysis shows that the scanning angle of the staggered array of E-field is improved at least 20 degrees in 4-6 GHz.关键词
超宽带阵列/波束扫描/Vivaldi天线/大扫描角Key words
ultra-wideband array/beam steering/Vivaldi antenna/large scanning angle分类
信息技术与安全科学引用本文复制引用
刘阳洋,任宇辉,伍捍东,高宝建..一种超宽带、大扫描角Vivaldi天线阵列[J].电波科学学报,2016,31(6):1099-1106,8.基金项目
陕西省教育厅自然科学专项基金(11JK1039) （11JK1039）
