超宽带天线矩形口径辐射特性研究  

The study about radiated property of the UWB antennas rectangular aperture

作　　者：林春[1] 王绪本[1] 邹倩颖[1] 

机构地区：[1]成都理工大学地球探测与信息技术教育部重点实验室,成都610059

出　　处：《地球物理学进展》2007年第1期289-293,共5页Progress in Geophysics

基　　金：国家自然科学基金项目<城市灾害救助生命搜索的超宽带电磁探测方法研究>;NO:40374027资助

摘　　要：本文利用惠更斯等效原理,从时域和频域两方面研究了超宽带天线矩形口径的瞬态辐射特性,以及能量传播特性的解析解.最后利用二维模拟论证了激励脉冲在自由空间的传播特性与天线口径几何尺寸、形状和主辐射面、辐射波形之间的关系,得出轴线上的辐射波形与口径形状无关,与口径面积大小成正比的模拟结论,为设计超宽带天线口径和为进一步设计超宽带电磁辐射提供了理论依据.This paper, using Huygens＂ equivalent principle, study the UWB rectangular aerial ＂transient state both in time -domain and frequently-domain and the arithmetic formula of the energetic diffusion on the axis. In the end, the 2D simulation is utilized to prove the relation among spread characteristic in the free space of the encouraging pulse and aerial requirements geometry , the form ,main radiation , and the radiation wave form. And then we can get that the radiated waveform on the axis has nothing to do with the shape of the aperture , but in direct proportion to the size of the aperture. This research provided a theoretical basis for designing the radiated property of UWB aperture antennas and helping engineers to design UWB electromagnetic radiation.

关 键 词：超宽带天线 天线口径 UWB电磁脉冲 

分 类 号：P631[天文地球—地质矿产勘探]