P波段小型化锯齿缝隙超宽带天线设计  

A Design of P-band Miniaturized Saw-tooth-edged Ultra-wideband Antenna

作　　者：郭蓉[1] 曹祥玉[1] 李思佳[1] 张昭[1] 徐雪飞[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《空军工程大学学报（自然科学版）》2014年第3期66-70,共5页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61271100);陕西省自然科学基金资助项目(2010JZ010;2012JM8003);国家重点实验室基金资助项目(20131007)

摘　　要：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。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.

关 键 词：印刷宽缝天线 小型化 P波段 超宽带 

分 类 号：TN82[电子电信—信息与通信工程]