作　　者： ; ;

机构地区： 电子科技大学中山学院

出　　处： 《无线电通信技术》 2011年第2期32-34,共3页

摘　　要： 提出了一种新型的双分枝树形超宽带天线,该天线是在矩形树形天线基础上由阶梯形缺口构成,采用了部分接地面技术和分形概念,测量结果表明天线的输入阻抗带宽达71.4%(2.7～5.7 GHz),同时数值仿真表明阶梯形缺口有利于天线阻抗匹配的改善,该天线为全向辐射,方向图与偶极子天线类似,天线增益为2.16～4.49 dB(3～5 GHz),与矩形树形天线相比,双分枝树形辐射单元面积减少28.5%。 In this paper,a novel dual binary tree-shaped antenna configuration suitable for UWB applications is presented.The antenna based on rectangle tree-shaped antenna is composed of stepped appearance gaps,and the partial ground plane technique and the fractal concept is used.The measured result shows that input impedance bandwidth of proposed antenna is 71.4%（2.7～5.7 GHz）.Simulation results show that the level of impedance matching is improved with the stepped appearance gaps,the radiation pattern of this antenna with an omni-directional radiation pattern is similar to that of dipole antenna.The antenna gain is 2.16～4.49 dB（3～5 GHz）.Compared with rectangle tree-shaped antenna,the size of proposed antenna can be reduced by 28.5%.

关 键 词： 超宽带天线 树形 分形天线 部分接地面

领　　域： [电子电信]