具有带阻功能的超宽带印刷天线  

Ultra-Wideband Printed Antenna with Band-Notch Function

作　　者：金骏[1] 钟顺时[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072

出　　处：《上海大学学报（自然科学版）》2007年第2期111-115,共5页Journal of Shanghai University:Natural Science Edition

基　　金：国家自然科学基金资助项目(60571053);上海市重点学科建设资助项目(T0102)

摘　　要：提出一种具有带阻功能的超宽带印刷天线,天线采用矩形金属贴片作为辐射单元,并由同一面上的共面波导进行馈电,通过在贴片上开2个倒L形槽来实现带阻功能,对槽的各个参数对阻带性能的影响进行了研究.仿真结果显示,阻带的中心频率由槽的长度所决定,槽的宽度、形状、位置则会对阻带带宽产生影响.实验结果表明,该天线阻抗频带覆盖了3.1-10.6 GHz的频率范围,并有效地阻隔了5.15-5.35 GHz的WLAN频段.该天线适用于蜂窝系统和超宽带系统的应用.A band-notched ultra-wideband （UWB） printed antenna is introduced. The radiation element is a rectangular patch fed by a coplanar waveguide （CPW）, both etched on the same side of a substrate. The band- notch characteristic is realized by cutting two L-shaped slots in the radiation element. A detailed parametric study of the slots is presented. Simulation results show that the slot length determines the center frequency of the notch band, and the width, shape and position of the slots affect the notch bandwidth. The antenna impedance bandwidth covers the 3.1 - 10.6 GHz frequency range and effectively eliminates the 5.15 -5.35 GHz WLAN range. The proposed antenna is suitable for applications in cellular systems and UWB systems.

关 键 词：超宽带天线 带阻功能 单极天线 印刷天线 

分 类 号：TN822.4[电子电信—信息与通信工程]