具有陷波特性的超宽带印刷天线设计  

Design of Ultra-wideband Printed Antenna with Band-Notched Characteristic

作　　者：周锋[1] 钱祖平[1] 彭川[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《现代电子技术》2010年第8期127-129,共3页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(6087204)

摘　　要：设计一种具有陷波特性的超宽带印刷天线，天线采用圆形金属贴片作为辐射单元，采用微带线进行馈电，通过在贴片上开四个对称T形槽来实现陷波功能。利用仿真软件HFSS10．0对其进行计算，对天线的阻抗特性、方向图和增益进行了研究。运算结果表明，该天线在2．26～4．94GHz和6～11．68GHz的工作频带范围内电压驻波比（VSWR）小于2；在4．94～6GHz的阻带范围内具有良好的陷波特性；在阻带中心频率（5．48GHz）处，电压驻波比高达40。A ultra-wideband （UWB） printed antenna with notching characteristic is proposed. A circle metal patch fed by a microstrip is taken as a radiation element. The band-notched function is realized by cutting four symmetrical T-shaped slots in the patch. It was studied experimentally for its impedance bandwidth, radiation patterns and gain by using HFSS software. Simulation results show that within the operation band-width of 2.26 GHz-4.9 GHz and 6.2 GHz- 11.68 GHz, the voltage stand wave ratio（VSWR） is lower than 2; within the stop band of 4.9 GHz-6.2 GHz it has a good notching characteristic; and at the center frequency（5.48 GHz） of the stop band, the VSWR is up to 40.

关 键 词：超宽带天线 陷波特性 印刷天线 辐射单元 

分 类 号：TN821[电子电信—信息与通信工程]