共面波导馈电的超宽带天线研究  

Research on a CPW-fed ultra-wideband antenna

作　　者：李迎松[1] 杨晓冬[1] 刘乘源[1] 牛朝[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《电子测量与仪器学报》2010年第9期819-823,共5页Journal of Electronic Measurement and Instrumentation

基　　金：黑龙江省科技攻关基金(编号:GC05A119);科技部中小企业技术创新基金(编号:08C26212301759);哈尔滨市科技创新人才专项基金(编号:2009RFKXG010)

摘　　要：设计了一种共面波导馈电的超宽带（UWB）天线,其阻抗带宽达到341%。所设计的天线印刷在尺寸为28mm×21mm×1.6mm,介电常数为2.65的聚四氟乙烯介质基板上。同时为了实现该天线与WLAN（5.725~5.825GHz）系统的协同工作,本文在共面波导的地面上刻蚀一个矩形槽,实现UWB与WLAN系统的兼容。利用高频结构仿真软件HFSS对影响天线性能的主要物理参数进行仿真、分析和优化,得到天线的优化尺寸。实验结果表明,该天线比传统微带贴片天线性能有了较大的提高,从而表明了利用共面波导馈电和刻蚀矩形槽的天线设计方法实现多种宽带通信系统兼容的可行性和有效性。A coplanar waveguide-fed ultra-wideband（UWB）antenna is presented in the paper.The impedancebandwidth is about 341%.The proposed antenna was printed on 28×21×1.6 mm3 poly tetrafluoroethylene with relativedielectric constant 2.65.The antenna is compatible with the WLAN（5.725~5.825 GHz）by cutting a rectangle notch inthe ground of the CPW.The key parameters are simulated,analyzed and optimized using High Frequency StructureSimulator（HFSS）.The optimized dimensions of the antenna are obtained.The results show that the performance ofCPW broadband microstrip slot antennas can be greatly improved compared to traditional microstrip patch antennas,and the feasibility and effectiveness of the CPW feed and the rectangle slot was also verified.

关 键 词：共面波导 超宽带天线 刻痕带宽 微带天线 HFSS仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]