The invention discloses a compact dual-line polarized ultra-wideband antenna. Including: two identical opposite-heel Vivaldi antennas are arranged at a right angle of T-shaped 90 degrees. The opposite-heel Vivaldi antenna is a single-layer dielectric structure with metal plates on both sides of the dielectric layer. Specifically: 1) The radiation patches with Y-shaped tapered slots are located on both sides of the single layer dielectric layer and consist of exponential tapered sections acting as radiation; 2) the patch resistors are connected at the end of the radiation patch, and the other end is connected with the parasitic patch, which is located on both sides of the single layer dielectric. 3) Parasitic patch, which is loaded with four rectangular slots parallel to each other on both sides of the single dielectric layer; 4) Parallel double-wire structure is adopted in the feed transmission section, which is different from the traditional Barron structure. The invention can realize the characteristics of compact ultra-wideband and dual-linear polarization, and has the advantages of simple structure and convenient processing, and can use printed circuit technology for mass production.
【技术实现步骤摘要】
一种双线极化超宽带紧凑型天线
本专利技术属于微带天线
,具体是一种双线极化超宽带紧凑型天线。
技术介绍
随着通信技术以及电子对抗技术的发展,对天线各方面指标的要求越来越苛刻,特别是对频带的宽带化、天线整体结构的小型化,要求越来越高。拓展天线带宽,缩减天线尺寸,频率向更低频发展是未来一个趋势。Vivaldi天线具有超宽带、交叉极化低、尺寸小、方向图稳定、平面结构且易于加工制作等优点,但是Vivaldi天线的带宽受到两个因素的限制,低频截止频率主要受到天线宽度的限制,通常天线槽线的开口宽度等于低频波长的一半。高频截止频率受微带天线转槽线的转换结构限制。但是,采用异面Vivaldi天线即对踵Vivaldi天线可以提高高频截止频率。
技术实现思路
本专利技术的目的在于提供一种结构简单、加工方便、性能优良的双线极化超宽带紧凑型天线,能够采用印刷电路技术进行批量生产。实现本专利技术目的的技术解决方案为:一种双线极化超宽带紧凑型天线,其特征在于:两个相同的对踵Vivaldi天线a、b成90°直角按T型摆放且相距5mm,对踵vivaldi天线为单层介质结构a3,介质层两侧有金属贴片a1、a2,两金属贴片关于主辐射方向呈旋转对称;金属贴片a1、a2包括平行双线段、开有Y型渐变缝隙的辐射贴片a11和a21、贴片电阻a13和a23、寄生贴片a12和a22;介质层a3两侧顶部分别加载寄生贴片a12和a22,两寄生贴片均开有四条矩形缝隙;辐射贴片a11和a21末端分别加载有电阻a13和a23,电阻a13和a23另一端分别连接寄生贴片a12和a22;两个相同的对踵Vivaldi天线 ...
【技术保护点】
1.一种双线极化超宽带紧凑型天线,其特征在于:两个相同的对踵Vivaldi天线a、b按T型成90°直角摆放且相距5mm,对踵vivaldi天线为单层介质结构a3,介质层两侧有金属贴片a1、a2,两金属贴片关于主辐射方向呈旋转对称;金属贴片a1、a2包括平行双线段、开有Y型渐变缝隙的辐射贴片a11和a21、贴片电阻a13和a23、寄生贴片a12和a22;介质层a3两侧顶部分别加载寄生贴片a12和a22,两寄生贴片均开有四条矩形缝隙;辐射贴片a11和a21末端分别加载有电阻a13和a23,电阻a13和a23另一端分别连接寄生贴片a12和a22;两个相同的对踵Vivaldi天线a、b以等幅同相馈电垂直放置,以实现双线极化。
【技术特征摘要】
1.一种双线极化超宽带紧凑型天线,其特征在于:两个相同的对踵Vivaldi天线a、b按T型成90°直角摆放且相距5mm,对踵vivaldi天线为单层介质结构a3,介质层两侧有金属贴片a1、a2,两金属贴片关于主辐射方向呈旋转对称;金属贴片a1、a2包括平行双线段、开有Y型渐变缝隙的辐射贴片a11和a21、贴片电阻a13和a23、寄生贴片a12和a22;介质层a3两侧顶部分别加载寄生贴片a12和a22,两寄生贴片均开有四条矩形缝隙;辐射贴片a11和a21末端分别加载有电阻a13和a23,电阻a13和a23另一端分别连接寄生贴片a12和a22;两个相同的对踵Viv...
【专利技术属性】
技术研发人员:陈如山,凌玲,樊振宏,李兆龙,
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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