摘要
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1 4波长缝隙和地板上的一对1 4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。
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.
出处
《现代电子技术》
2014年第15期86-88,93,共4页
Modern Electronics Technique
基金
广州对外科技合作专项(2013J4500029)
关键词
超宽带天线
双陷波特性
缝隙天线
可控陷波带宽
ultra-wideband antenna
dual-band-notched characteristic
slot antenna
controllable notched bandwidth
