一种小型的“Y”形超宽带天线

摘要

A new design of compact microstrip⁃fed ultrawideband(UWB)antenna is presented,whose total size is 30 mm× 30 mm. The antenna consists of a Y⁃shaped radiating patch,a pair of“8”⁃shaped resonance chips and a grounding plane with a rectangular slot. The 3⁃D electromagnetic simulation software is applied to simulating the parameters such as return loss,gain and radiation pattern of the antenna. Simulated results show that the antenna′s frequency band range is 3.06~13.98 GHz,whose voltage standing wave ratio(VSWR)is less than 2,which can provide a wide usable bandwidth of 10.83 GHz. The antenna re⁃veals a good omni⁃directional radiation characteristic. The antenna configuration is simple,easy to fabricate,and can be integrated into UWB systems.%提出了一种以微带线馈电的小型“Y”形超宽带天线，尺寸为30 mm×30 mm。天线由“Y”形辐射贴片，双“8”字形谐振片以及带矩形槽的接地面三部分构成。利用三维电磁仿真软件对天线的回波损耗、增益、方向图等参数进行了仿真，达到电压驻波比（VSWR）<2的频带范围为3.06~13.89 GHz，频带宽度达到了10.83 GHz，并且天线显示出较好的全向辐射特性，天线的结构简单，易于制作，可用于超宽带通信系统。