超宽带共面波导缝隙天线的设计与分析

Design and Analysis of a CPW-Fed UWB Slot Antenna

设计了一种超宽带天线,采用介电常数为4.4,正切损耗角为0.02的FR4材料作为天线的介质基板.为了实现天线的超宽带特性,在共面波导地面上分别刻蚀一个L型槽,这两个L型槽构成对称阵子.利用高频电磁仿真软件HFSS对影响天线性能的参数进行分析,得到天线的最优尺寸.实验结果表明,在共面波导接地板上刻蚀L型缝隙,能够实现天线的超宽带设计,并且天线的尺寸也减小很多.

An ultra-wideband antenna is presented,which use the FR4 material of the dielectric constant 4.4 and the tangent loss angle 0.02,as the dielectric substrate of the antenna.The antenna for the ultra wideband characteristics is on both sides with two defected ground planes etching two L-shaped slots,which is based on the UWB printed monopole antenna forming the symmetric oscillator. With the simulation and optimization analysis by using simulation software HFSS to adjusting all parameters of the antenna,a group of optimal parameters of this antenna can be got.The results show that etching L-shaped slot on both floors,can realize the ultra-wideband antenna design,and the reduction of the antenna’s size.