【作者】 迟笑盟； 宗显政； 聂在平； 兰卓；

【Author】 CHI Xiaomeng;ZONG Xianzheng;NIE Zaiping;LAN Zhuo;University of Electronic Science and Technology of China;

【机构】 电子科技大学；

【摘要】 本文提出了一种基于平衡Vivaldi的超宽带天线阵列。通过在槽线以及馈线周围加载金属化过孔,抑制了阵列在大角度扫描时高频部分因互耦激励起的表面波,从而将扫描盲点移出阵列的工作频带,使得该天线阵列的扫描带宽能够被大大拓宽。通过在周期边界条件下的仿真,当有源驻波小于3时,阵列可以实现E面±6 0°、H面±50°的大角度扫描,并且在阵列达到最大扫描角时,有较低的交叉极化。更多还原

【Abstract】 A In this paper,an ultra-wideband antenna array based on balanced Vivaldi is proposed.By loading metallized vias around the slot lines and feed lines,the surface waves in the high frequency part of the array due to mutual coupling excitation are suppressed during large angle scanning,thus moving the scanning blind spot out of the operating band of the array,which enables the scanning bandwidth of the array to be greatly widened.Through the simulation under the periodic boundary conditions,the array can achieve a large angle scan of ±60° in E-plane and±50° in H-plane when the active VSWR is less than 3,and there is very low cross-polarization when the array reaches the maximum scan angle.更多还原