【作者】 张科； 蒋之浩； 洪伟；

【Author】 Ke Zhang;Zhi Hao Jiang;Wei Hong;Southeast University;

【机构】 东南大学；

【摘要】 本文提出了一种面向车载应用的小型超宽带嵌入式分集天线,该天线在1.7～6 GHz频带内可支持方向图分集。通过将多端口辐射体内嵌至碗状地板结构的正中央,使得两者顶部等高。为了避免与WLAN通信串扰,在多端口辐射体上加载F型单极子结构产生在2.4和5.2 GHz的陷波特性。实测结果表明该天线的阻抗带宽为1.7～2.37,2.64～4.96和5.6～6 GHz,端口互耦均低于-15 dB,以及包络相关系数均小于0.01。当单端口激励时,在俯仰面上的定向辐射主要覆盖60°～90°范围;当四个端口同时激励时,可获得垂直极化的全向方向图。更多还原

【Abstract】 A compact,ultra-wideband recessed antenna for V2 X applications is proposed,which can support pattern diversity from 1.5 to 6 GHz.The multiport radiator is recessed into the bowl-shaped ground structure,simulataneously having a flush top.To avoid the crosstalk with WLAN communication,F-shaped monopole structures were loaded in the multiport radiator to produce notched-characteristics at 2.4 and 5.2 GHz.Experimental results illustrate that the impedance bandwidth is from 1.7 to 2.37,2.64 to 4.96,and 5.6 to 6 GHz,mutual coupling are smaller than-15 dB,and ECC are below 0.01.When only a single port is excited,directional radiation covering the angular range between 60° and 90° in the elevation plane can be achieved;when four ports are simulataneously active,a vertically-polarized omnidirectional pattern can be obtained.更多还原