一种小型超宽带平面倒锥形单极子天线  

A miniaturized ultra-wideband printed PICA-like monopole antenna

作　　者：董兴超[1] 刘运林[1] 吕春燕[1] 王宁[1] 

机构地区：[1]西南交通大学电磁场与微波研究所,四川成都610031

出　　处：《现代电子技术》2013年第21期93-95,共3页Modern Electronics Technique

摘　　要：提出了一种小型超宽带平面倒锥形单极子天线。采用微带线对倒锥形辐射贴片进行馈电，背面采用相似形缺陷地结构窗口。天线总体尺寸为25 mm ×23 mm ×1.6 mm，较之前同类天线尺寸缩小了约33%。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。经优化后，该天线10 dB回波损耗带宽为3~11 GHz，阻抗带宽达到114%，覆盖了整个UWB频段。天线在整个频带内增益为3~4 dB。A miniaturized ultra-wideband（UWB）printed PICA（planar inverted cone antenna）-like monopole antenna is presented. The radiating element of this antenna is made up of PICA-like patch which is fed by microstrip line. The window of the defected ground structure（DGS） is etched on the ground plane. The antenna has a small overall size of 25 mm × 23 mm × 1.6 mm. Compared with the previous antenna,the size was decreased by about 33%. The impedance bandwidth,radiation pat-terns and gain characteristic of the antenna were analyzed and optimized The results show that the 10 dB return-loss bandwidth is from 3 GHz to 11 GHz and the relative impedance bandwidth is about 114%,which covers up the total UWB frequency band. The consistent gain in the total frequency band is 3-4 dB.

关 键 词：小型化天线 超宽带 倒锥形天线 单极子天线 

分 类 号：TN823.153.4[电子电信—信息与通信工程]