一种具有三陷波特性的超宽带印刷天线设计  

Design of a UWB Printed Antenna with Triple-Band Notched Characteristic

作　　者：袁耿[1,2] 林嘉扬[2] 李铂[1] 

机构地区：[1]西安电子科技大学天线与微波技术重点实验室 [2]中国人民解放军92146部队修理所

出　　处：《电子科技》2013年第1期71-73,共3页Electronic Science and Technology

摘　　要：提出了一种新型的具有三陷波特性的超宽带印刷天线。大钱形的辐射贴片和共面波导传输线馈电,可以保证在相当宽的3个频带内具有良好的阻抗匹配。回波损耗S11<-10 dB的阻抗带宽是3.1～10.6 GHz,除了其中3.3～3.7 GHz的WiMAX,5.15～5.825 GHz的WLAN和7.25～8.4 GHz的X波段下行频段3个陷波频段。这些陷波的频段可以通过在天线的辐射贴片上增加长条裂缝和U形缝隙实现。加工和测试结果表明,该天线具有很好的阻抗带宽和全向辐射方向图。A novel printed ultra-wideband （UWB） antenna for triple-band notched characteristic is proposed. Good impedance matching in a wide triple-band can be achieved by a copper coins shaped radiating patch and a co- planar waveguide （CPW） transmission line. It yields impedance bandwidth of 3.1 - 10. 6 GHz with return loss S11 〈 - 10 dB, except for the three subbands of 3.3 - 3.7 GHz for WiMAX, 5.15 - 5. 825 GHz for WLAN and 7.25 8.4 GHz for downlink of X-band. These notched subbands are obtained by etching slits and U-shaped slots on the ra- diating patch. The antenna was successfully fabricated and measured, showing broadband matched impedance and nearly omnidirectional radiation pattern.

关 键 词：超宽带天线 陷波特性 小型化 无线通信 

分 类 号：TN822.8[电子电信—信息与通信工程]