一种改进的小型化超宽带平面倒锥缝隙天线  

A Modified Miniature Ultrawideband (UWB) Printed PICA-like Slot Antenna

作　　者：张倩[1] 刘运林[1] 李智勇[1] 王汇龙[1] 

机构地区：[1]西南交通大学电磁场与微波研究所,成都610031

出　　处：《电讯技术》2010年第11期85-89,共5页Telecommunication Engineering

基　　金：教育部科技创新基金项目~~

摘　　要：提出了一种改进的超宽带平面倒锥缝隙贴片天线,通过调整倒锥缝隙和倒锥贴片的形状,在更小尺寸条件下,实现了超宽带性能。天线总体尺寸为40 mm×40 mm×1.5 mm。采用仿真软件分析了该天线的阻抗带宽、辐射方向图及增益特性。结果显示,该天线的回波损耗小于-10 dB的带宽为2.2 GHz到大于16 GHz,在低频段具有全向性,在314 GHz频段增益随频率的变化在47 dB之间。A modified ultrawideband（UWB） printed PICA（Planar Inverted Cone Antenna）-like slot antenna is presented.Through adjusting the shape of the solt and the patch,the proposed antenna performances an ultrawideband characteristic with the overall size of 40 mm×40 mm×1.5 mm.The impedance bandwidth,radiation patterns and gain are simulated.The results show that the proposed antenna achieves good impedance matching over an operating bandwidth of 2.2 GHz to more than 16 GHz.Good omnidirectional pattern is obtained at lower frequencies,and consistent gain（4～7 dB） is over 3～14 GHz.

关 键 词：超宽带天线 平面倒锥型天线 缝隙天线 小型化 

分 类 号：TN823[电子电信—信息与通信工程]