P波段小型化锯齿缝隙超宽带天线设计

P波段小型化锯齿缝隙超宽带天线设计

内容简介：设计了一种P波段小型化超宽带天线。该天线采用微带线对五边形辐射单元进行馈电,接地板上蚀刻了锯齿形边沿的矩形宽缝。通过天线参数的仿真优化,最终实现了相对带宽约95%、尺寸为0.27λ×0.17λ(λ为低频点的自由空间波长)的超宽带 P 波段小型化印刷天线。仿真结果表明：天线的工作频带为300.5~848.8 MHz,带内回波损耗均在-10 dB以下,整个频段内天线的增益均在3 dBi以上,天线为全向辐射。该天线具有平面结构,形状简单,易于共形的特征。最后制作了天线样件并进行了测试,测量结果与仿真结果吻合较好。

Abstract：A miniaturized ultra-wideband antenna is designed in P band.The antenna is fed by a pentagon coupled feeding structure.An improved rectangular slot with saw-tooth edge is etched on the ground.The results of parameters show that the bandwidth of the designed antenna is 293.4~830.3 MHz with relative bandwidth 95% and the return loss is less than -10 dB.The size of the antenna is (is the wavelength of the lowest frequency).The average gain is over 3dBi in the operating range and the antenna is a kind of omni antenna.The antenna is a planar construction and is simple in shape and easy in conformation.A sample antenna is fabricated and tested.The experimental results are in good agreement with the simula-tion results.

作者：郭蓉, 曹祥玉, 李思佳, 张昭, 徐雪飞,

关键词：印刷宽缝天线, 小型化, P波段, 超宽带,