具有带阻特性的超宽带天线

Ultra-wideband antenna with band-notchcharacteristics

提出了一种新型共面波导(CPW)馈电的,具有带阻特性的平面单极子超宽带(UWB)天线.为了抑制与WLAN、WiMax系统的干扰,通过在天线平面上开槽,从而达到了在天线频段上的带阻特性.该天线回波损耗S11≤-10dB的工作频带带宽达到了2.75～11GHz,并且在2.75～3.29GHz、4.1～4.9GHz、6.08～8GHz频带内形成阻带.利用电磁仿真软件优化,并绘出天线的方向图,结果表明该设计方法的有效性.

A new planar monopole UWB antenna with CPW-fed and sharp band notch characteristics is proposed. To suppress interference from the WLAN and WiMax system,notches are cut in the planar antenna and a frequency band notch function is thus created in the WLAN frequency range. The antenna offers an excellent operating frequency range from 2.75 GHz to 11 GHz（Su 〈-10 dB）,and possesses band notch from 2.75-3.29 GHz,4.1-4. 9 GHz,and 6.08-8 GHz. The radiation patterns of the antenna are illustrated with the electron magnetic simulation software CST and the results indicate the design is reasonable.