The invention discloses an ultra wideband Vivaldi antenna, including the upper PCB dielectric plate is placed in parallel and lower PCB dielectric plate and U metal groove located on both sides of the upper plate and the lower PCB medium PCB medium plate, the upper plate and the lower PCB medium PCB medium plate is fixed by U metal slots on both sides of the outer surface of the printing. The upper PCB dielectric plate index groove gap metal layer, index of groove gap metal layers are symmetrically arranged on both sides of the wing semi elliptical slot, groove gap index metal layer is provided with a rectangular groove and rectangular groove groove gap index near the metal layer inside edge of symmetric distribution, lower PCB medium plate outer surface and the upper PCB medium plate the corresponding position is printed with index groove gap metal layer is the same. The ultra wideband Vivaldi antenna of the invention is fed by strip line, and the stripline is transferred to the microstrip line at the edge of the antenna, which is convenient to connect with the RF connector. The even number is used to distribute the metal hole across the stripline and improve the performance of the transmission line.
【技术实现步骤摘要】
一种超宽带Vivaldi天线
本专利技术涉及天线领域,特别是一种超宽带Vivaldi天线。
技术介绍
现代化雷达和通信系统对多功能设备的需求越来越迫切,小型化的超宽带天线在天线设计领域得到了越来越高的重视。Vivaldi天线是超宽带天线的一种,理论上有无限宽的带宽,而且具有良好的端射特性。但是Vivaldi天线单元尺寸要求达到低频端截止频点的半波长,而以往采用加载技术进行的小型化天线设计需要付出增益的代价,因此在实际应用中迫切的需要一种具有小型化尺寸的高增益天线单元。文献1(P.J.Gibson,“TheVivaldiaerial,”inProc.9thEur.Microw.Conf.,Brighton,U.K.,pp.101–105,Jun.1979.)提出了Vivaldi天线,说明了Vivaldi天线的宽带特性,并验证了Vivaldi天线具有很好的端射辐射特性,而且从理论上解释了Vivaldi天线具有无限宽的带宽,有着极大地应用前景。文献2(M.WajihElsallalandD.H.Schaubert,“ParameterStudyofSingleIsola ...
【技术保护点】
一种超宽带Vivaldi天线,其特征在于,包括平行正对放置的上层PCB介质板[1]和下层PCB介质板[2]以及位于上层PCB介质板[1]和下层PCB介质板[2]两侧的U型金属槽[3],所述上层PCB介质板[1]和下层PCB介质板[2]通过两侧的U型金属槽[3]固定,所述上层PCB介质板[1]的外表面印刷有指数型槽缝隙金属层,所述指数型槽缝隙金属层两侧翼对称设置半椭圆形开槽,所述指数型槽缝隙金属层内侧边沿对称设有矩形槽;所述下层PCB介质板[2]外表面与上层PCB介质板[1]外表面对应位置印刷有相同的指数型槽缝隙金属层;所述上层PCB介质板[1]的内表面印刷有传输线。
【技术特征摘要】
1.一种超宽带Vivaldi天线,其特征在于,包括平行正对放置的上层PCB介质板[1]和下层PCB介质板[2]以及位于上层PCB介质板[1]和下层PCB介质板[2]两侧的U型金属槽[3],所述上层PCB介质板[1]和下层PCB介质板[2]通过两侧的U型金属槽[3]固定,所述上层PCB介质板[1]的外表面印刷有指数型槽缝隙金属层,所述指数型槽缝隙金属层两侧翼对称设置半椭圆形开槽,所述指数型槽缝隙金属层内侧边沿对称设有矩形槽;所述下层PCB介质板[2]外表面与上层PCB介质板[1]外表面对应位置印刷有相同的指数型槽缝隙金属层;所述上层PCB介质板[1]的内表面印刷有传输线。2.根据权利要求1所述的超宽带Vivaldi天线,其特征在于,所述传输线由带状线[6-1]以及位于上层PCB介质板[1]边缘的微带线[6-2]连接组成,所述带状线与微带线连接处两边印刷有偶数对对称分布的圆形金属贴片[4],所述圆形金属贴片[4]上设有贯穿上层PCB介质板[1]和下层PCB介质板[2]的金属过孔[5]。3.根据权利要求2所述的超宽带Vivaldi天线,其特征在于,所述圆形金属贴片[4]的直径为...
【专利技术属性】
技术研发人员:王昊,贺双,丁增霞,
申请(专利权)人:南京理工大学,
类型:发明
国别省市:江苏,32
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