【摘要】 提出了一种新颖的小型平面超宽带(UWB)天线。该天线由微带槽天线的基本结构变形而来,为获得超宽带频率特性,设计时馈电微带线采用了渐变结构的叉形调谐支节,金属底板的开槽设计成对称多边形。首先通过数值计算来获得最佳的天线几何尺寸,并制作了实际的样品。对天线的反射特性、方向图以及增益都进行了测试,然后利用时域有限差分(FDTD)方法计算了天线收发脉冲信号的保真度。研究结果显示该天线具有良好的超宽带特性。更多还原

【Abstract】 A novel compact planar antenna for Ultra-wideband (UWB) applications is proposed in this paper. Similar to conventional microstrip slot antenna, a tapered microstrip folk-like shape stub is employed to achieve ultra-wideband characteristics. A symmetric polygon wide slot is etched on the ground of antenna, and the gain, reflection characteristics and direction pattern of antenna is tested. The transient pulse signal fidelity is simulated employing finite-difference time-domain (FDTD) method. The results show that the presented antenna design has promising characteristics for UWB applications.更多还原