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文章提出了一种低剖面超宽带(UWB)双陷波天线。为使该天线具有超宽带特性,采用微带线馈电的圆形单极子作为辐射贴片,通过在圆弧形地板上开矩形槽和辐射贴片上切角来提高阻抗带宽。此外,为了使天线在UWB工作带宽内不受无线城域网(WiMAX)和无线局域网(WLAN)工作频段的干扰,在圆形辐射贴片上加入了两条曲折线型缝隙,使其在WiMAX和WLAN频段内具有陷波功能。通过对设计的天线进行实物加工和测试分析,结果表明实测与仿真结果较好吻合。该天线具有良好的性能,且结构简单,便于加工,适用于超宽带通信的实际应用中。
This paper presents a low profile UWB double-notch antenna. In order to make the antenna have ultra-wide band characteristics, a circular monopole fed by a microstrip line is used as a radiation patch, and the impedance bandwidth is increased by opening a rectangular groove on the arc-shaped floor and cutting the upper corner of the radiation patch. In addition, two zigzag-shaped slits are added to the circular radiating patch in order to keep the antenna from interfering with the working frequency band of the wireless metropolitan area network (WiMAX) and the wireless local area network (WLAN) in the UWB working bandwidth, And WLAN band with notch function. Through the actual processing of the designed antenna and test analysis, the results show that the measured and simulated results are in good agreement. The antenna has good performance, and the structure is simple, easy to process, suitable for practical applications of ultra-wideband communications.