一种微带馈电的双阻带超宽带天线设计

Design of a Dual Band-notched UWB Antenna Fed by Microstrip Line

摘要: 设计了一种具有双阻带的超宽带天线。该天线由一个梯形的辐射单元和一个开有矩形槽的地板构成。并且通过在地板上开L 型和U 型缝隙，实现双阻带特性。该结果表明，天线工作带宽（VSWR<2）为8.6 GHz（2.9～11.5 GHz），覆盖了UWB 频率范围，在3.2～3.9 GHz 和5～5.9 GHz 处形成了两个阻带，同时，这种天线在整个工作频率范围内有良好的辐射方向特性。

Abstract: In this paper, an ultra-wideband antenna with dual band-notch is proposed. It consist of a trapezoid radiationelement and rectangular slotted ground plane. The band-notched characteristic is achieved by inserting slots on the ground.From the results, bandwitdth （VSWR<2）of the proposed antenna is 8.6GHz（2.9GHz~11.5GHz）,which covers the whole rangeof UWB , and the two rejected band are formed at 3.2GHz~3.9GHz and5GHz~5.9GHz.Good radiation performance over theentire frequency range has also been achieved..