小型渐变微波带线馈电平面超宽带天线

为有效地对共面波导馈电超宽带(UWB)天线进行小型化,提出了一种新型的小型渐变微波带线馈电平面UWB天线,其尺寸只有11 × 22.6 mm2,天线的小型化过程是利用了锥形的馈带、渐变缝隙结构和对传统共面波导天线直接切半的思路相结合,不仅大大减少了天线的尺寸,并且提高升了天线的频带阻抗特性.测量结果证明,天线阻抗带宽为2.33 到16 GHz,同时,该天线在3.1-11.6 GHz的频段内,具有良好的全向辐射特,测量结果与仿真结果吻合良好.该天线的尺寸小于USB A型公口的宽度,远远小于目前大部分UWB天线,可容易的集成到USB无线通信设备里面,有着广泛的应用前景.

A novel compact tapered MCS-fed plane UWB antenna

A novel tapered MCS-fed planar printed antenna was presented in this paper. The edge-fed tapered MCS structure including with the tapered fed strip and gradient gap reduces the dimensions into half and improves impedance bandwidth dramatically. The measured bandwidth defined by return loss greater than 10 dB was from 2.33 to more than 16 GHz, as well as the radiation pattern exhibits a nearly omni-directional character. Its dimension was as small as 11 mm ?22.6 mm ?1.6 mm. As a result, it can be easily integrated into the wireless USB equipments and suitable for various wideband applications.