基于交叉缝隙的陷波可重构超宽带天线

Band-Notched Reconfigurable Ultra Wideband Antenna Based on Cross Slot

本文设计了一种基于交叉缝隙的陷波可重构超宽带天线.通过采用3×3圆形超表面,有效拓展了天线的工作带宽.通过在矩形接地面上刻蚀两组交叉缝隙,并控制缝隙中设置的二极管的通断实现了天线的陷波可重构.所设计的天线尺寸较小,控制方式简单.结果表明,所设计的天线可以工作在超宽带和陷波模式下,超宽带模式的-10 dB带宽为3.5 GHz~8 GHz,涵盖了L波段、S波段以及C波段;陷波模式包括3.9 GHz,4.9 GHz和5.6 GHz处的单陷波模式,以及4.9 GHz和5.6 GHz处的双陷波模式.天线工作在陷波模式下可以有效抑制WiMAX和WLAN系统的干扰.

A band-notched reconfigurable Ultra wideband antenna based on cross slot is designed in this paper.By using 3×3 circular metasurface,the working bandwidth of the antenna is effectively expanded.Through etching two sets of cross slots on the rectangular ground plane and adjusting the on-off state of the eight PIN diodes in the cross slot,the reconfigurable notched band are formed.The proposed antenna can be simply controlled with small size.The results indicate that the antenna can work in the Ultra wideband and band-notched modes.The-10 dB bandwidth of the Ultra wideband mode is 3.5 GHz~8 GHz,covering L-band,S-band and C-band.The band-notched modes include the single band-notched modes at 3.9 GHz,4.9 GHz and 5.6 GHz,as well as the double band-notched mode at 4.9 GHz and 5.6 GHz.The antenna working in the band-notched modes can effectively suppress the interference from WiMAX and WLAN system.