具有优越陷波选择性和带宽的超宽带缝隙天线

具有优越陷波选择性和带宽的超宽带缝隙天线

内容简介：提出一种具有改善陷波特性的超宽带缝隙天线，该天线由T形微带枝节馈电的矩形缝隙天线来实现超宽频阻抗带宽，由嵌入在T形枝节上的14波长缝隙和地板上的一对14波长的缝隙构成两阶滤波器，实现陷波优越的选择形和带宽特性。另外，可以通过调整所嵌入的缝隙的宽度和位置来调节陷波的带宽。该天线具有较好的全向辐射特性，可以应用在各种超宽带通信系统中。

Abstract：A UWB slot antenna with the improved band-notched characteristics is presented. A rectangular slot antenna fed by a T-shaped micro-strip stub is adopted in the antenna to realize an UWD impedance matching bandwidth. The second-order notch filter is composed of a pair of 1/4 wavelength slits embedded on the ground and a 1/4 wavelength slit on the T-shaped stub to achieve superior trap selection and bandwidth characteristics. Moreover,the band-notched bandwidth can be controlled by ad-justing the position and width of the silts. The proposed antenna has a nearly omni-directional radiation characteristics,and can be applied to various portable UWB antennas.

作者：张涌萍, 杨汝,

关键词：超宽带天线, 双陷波特性, 缝隙天线, 可控陷波带宽,