具有三陷波特性的超宽带天线设计  

Design of ultra-wideband antenna with triple band-notched characteristics

作　　者：朱金中[1] 耿友林[1] 

机构地区：[1]杭州电子科技大学天线与微波技术研究所,杭州310018

出　　处：《强激光与粒子束》2012年第10期2411-2414,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60971047);浙江省重中之重学科--电路与系统开放基金项目

摘　　要：设计了一款基于共面波导(CPW)馈电小型化具有三陷波特性的超宽带天线。该天线采用矩形贴片组合作为辐射单元,通过在辐射贴片上开倒U型、圆弧形和S形缝隙来实现陷波功能,有效地抑制了WiMAX(3.3～3.7GHz),WLAN(5.150～5.825GHz)和X波段卫星通信系统下行频率段(7.25～7.75GHz)对超宽带系统的干扰。结果显示:该天线在3.1～12.0GHz内电压驻波比小于2,整个工作频段内具有稳定的增益和良好的辐射方向特性。A compact coplanar waveguide fed ultra wideband antenna with triple band-notched characteristics is designed. The antenna uses rectangle patches as a radiation unit. By etching nested inverted U-shaped, circular arc shaped and S-shaped slots, band notched function is achieved in the three subbands of 3.3-3.7 GHz for worldwide interoperability for microwave access （WiMAX）, 5. 150-5. 825 GHz for wireless local area networks（WLAN） and 7.25-7.75 GHz for the downlink of X-band satellite communication systems. The result shows that the voltage standing wave ratio（VSWR） of the antenna in the band of 3. 1-12.0 GHz is less than 2. The proposed antenna has a stable gain and almost omnidirectional radiation patterns.

关 键 词：超宽带天线 陷波特性 共面波导 电压驻波比 

分 类 号：TN82[电子电信—信息与通信工程]