超宽带天线口径辐射效应的时域研究  

A Research on the Radiation Effect of Ultra Wide-band Aperture in Time-domain

作　　者：王向晖[1] 蒋延生[1] 汪文秉[1] 

机构地区：[1]西安交通大学微波所,西安710049

出　　处：《现代雷达》2003年第9期38-41,共4页Modern Radar

基　　金：国家自然科学基金 (6983 10 2 0 );国家重点基础研究发展规划 (973 )项目 (2 0 0 1CB3 0 940 5 )资助

摘　　要：如何高效而又有较少拖尾地将信号辐射出去是超宽带天线的设计关键 ,本文利用FDTD方法研究了在口径面上设定场值的情况下口径形状和激励脉冲的脉宽与辐射波形之间的关系 ,得出在不同口径形状的情况下口径辐射的两个主轴面的辐射情况。Ringing in the antenna, antenna bandwidth and the capability of radiating a clean pulse are important parameters for the design of ultra wide-band antenna .In this paper the FDTD (finite-difference time-domain) numerical method is used to study the relationship between the radiated waveform, the shape of aperture and the width of pulse under the condition of given source in the aperture. The radiated waveform in E-plane and H-plane for different aperture shape is obtained.

关 键 词：超宽带天线 FDTD 口径形状 辐射波形 高斯脉冲 

分 类 号：TN821[电子电信—信息与通信工程]