印刷型多频缝隙天线的设计与实现  

Design and Implementation of Printed Multi-frequency Slot Antenna

作　　者：蔡润南[1] 高嘉楠[2] 刘晓锋[1] 

机构地区：[1]哈尔滨工业大学通信技术研究所,哈尔滨150080 [2]江苏科技大学环境工程系,镇江212003

出　　处：《科学技术与工程》2012年第28期7216-7220,共5页Science Technology and Engineering

摘　　要：设计了一种可以同时工作在四个频带的印刷型缝隙天线,该天线是在三角形辐射单元的基础上加载水平缝隙得到的。馈电结构为共面波导形式。采用电磁仿真软件CST Microwave StudioR○软件分析了天线的表面电流,并得到了缝隙结构参数对天线通频带的影响。设计了一个可以工作于四个频段(1.8/2.4/3.5/5.2 GHz)的多频天线,制作了天线样机并在微波暗室内进行测试。仿真与实验结果表明,该型天线能够工作在4个频段,天线在工作频带内具有H面的全向辐射特性.该天线的尺寸仅为44 mm×48 mm,且为单面印刷形式,具有小型化、低层本和易于加工的特点,可以广泛应用于移动通信系统的无线终端。A printed slot antenna which can work at four frequency bands at the same time is designed. Such antenna is achieved by adding a horizontal slot on a triangular radiating unit, and the feeding part is a co-planar waveguide structure. The surface current on the antenna is analyzed through the CST Microwave Studio software, and the influence of the slot structural parameters on the pass band of the antenna is achieved. Then the designed multi-frequency antenna which can work at four frequencies （1.8/2. 4/3. 5/5. 2 GHz） is manufactured and tested in the microwave anechoic chamber. The simulation and measurement results show that such antenna can work at four frequency bands and has om- ni-directional radiation characteristic on the H plane in the working frequency bands. The size of such antenna is 44 mm x48 mm and follows single-side printing form. Besides, it has characteristics of miniaturization, low cost and easy fabrication. And it can be widely applied to the wireless terminals of the mobile communication system.

关 键 词：印刷天线 多频天线 缝隙天线 

分 类 号：TN823.24[电子电信—信息与通信工程]