一种共面波导馈电的三阻带超宽带天线设计与研究

内容简介：设计了一种共面波导馈电的超宽带天线（UWB）,该天线的辐射体和地板分别由具有渐变结构的类圆辐射贴片和梯形组成,具有良好的宽带阻抗匹配特性。通过在贴片的不同位置上嵌入3种不同形状的缝隙,实现了天线的3陷波特性。并利用HFSS 12软件对所设计的天线进行仿真测试,仿真计算和实测结果表明,该天线在WiMax（3.3～3.7G）、Wlan（5.15～5.825GHz）以及ITU（8.025～8.4GHz）3个频段内具有良好的陷波特性,并且该天线在其它通带频段具有良好的辐射特性和稳定的增益。天线的尺寸仅有25mm×29mm×1mm,利于与微波器件的集成。

Abstract：A coplanar waveguide-fed ultra-wideband （UWB） antenna was presented in this paper. The radiation body and the ground of the antenna are separately consist of a kind of circle-like with gradient structure and trapezoids, it has good wide bandwidth impedance characteristic. The triple band-notched characteristics are achieved by inserting three different- shaped slots in the radiating element. Besides, according to the emulative calculating and realistic measurement by HFSS 12, the antenna has great band-notched characteristics in the frequency bands of WiMax（3.3～3.7GHz） ,Wlan（5. 125～5.825GHz） and 1TU（8.025～8.4GHz）, and it has good radiation characteristics and gain in the rest operating frequency bands. The whole size of this antenna is only 25mm×29mm×lmm, and is easy to be integrated with microwave component.

作者：李昊然, 黄志祥, 吴先良, 李屾,

关键词：超宽带天线, 陷波特性, 共面波导馈电, HFSS仿真,