一种基于仿生学的小型双陷波超宽带天线

Compact Double Band-Notched UWB Antenna Based on Bionics

基于仿生学原理,以对称牛头形设计了一款小型超宽带双陷波功能微带天线。该天线包括带有"牛角"的对称牛头形的主体辐射单元,采用共面波导结构进行馈电。通过仿真及实验验证可以看出该天线在3.3~3.8GHz和5.0~5.5GHz具有良好的陷波特性,天线的驻波比从2.1GHz覆盖到了14.4GHz(VSWR<2),相对阻抗带宽超过了149%。

In this paper a novel compact tauren double band-notched CPW fed antenna is proposed,which consists of a tauren-shaped monopole patch with U-shaped slot and two U-shaped branches,and both of the structures are printed on the same side of a substrate and fed by a coplanar waveguide( CPW). The simulated and experimental results demonstrate that the proposed antenna can obtain the double band-notched feature within the band width of 3. 3 ~ 3. 8GHz and 5. 0 ~ 5. 5GHz,the impedance bandwidth can achieve from 2. 1 to 14. 4GHz( VSWR < 2),which is more than 149%.