超宽带小型印刷对数周期天线设计  

Design of Compact Ultra-wideband Printed Log Periodic Antenna

作　　者：李振亚 竺小松 张建华 LI Zhenya;ZHU Xiaosong;ZHANG Jianhua(College of Electronic Countermeasure, National University of Defense Technology, Hefei, 230037, CH)

机构地区：[1]国防科技大学电子对抗学院,合肥230037

出　　处：《固体电子学研究与进展》2018年第3期192-196,共5页Research & Progress of SSE

基　　金：国家自然科学基金资助项目(61671454)

摘　　要：针对频率较低时对数周期天线(LPDA)具有较大纵向尺寸,设计了一种小型化的超宽带印刷对数周期天线。通过在长阵子上加载T型结构的方式,有效地减小了天线的尺寸,实现了小型化。该天线工作的绝对带宽可以达到7.4GHz,倍频带宽超过了10∶1,且剖面较低。仿真与实侧结果表明:天线在整个频带(0.8~8.2GHz)内具有稳定的定向辐射方向图和较高的天线增益。设计的天线适于应用在导航、探侧以及超宽带(UWB)通信等领域。Since the log periodic dipole antenna（LPDA）for lower frequencies usually requires large longitudinal size,a compact ultra-wideband printed log periodic antenna was designed.The antenna size was effectively reduced and the miniaturization was realized by loading the T type structure on the long beam.The absolute bandwidth of the antenna reached 7.4 GHz,the frequency doubling bandwidth was higher than 10∶1 and the profile was low.The simulated and measured results show that the antenna has a stable directional radiation pattern and high gain in the whole frequency band（0.8 GHz to 8.2 GHz）.The designed antenna is suitable for applications in navigation,detection,ultra-wideband（UWB）communications and etc.

关 键 词：对数周期天线 小型化 超宽带 加载 

分 类 号：TN82[电子电信—信息与通信工程]