矩形波导斜切口面辐射特性的FDTD分析  

Analysis of an Inclined Aperture Antenna Based on an Open-Ended Rectangular Waveguide Using FDTD Method

作　　者：高文军[1] 吕善伟[1] 

机构地区：[1]北京航空航天大学电子工程系,北京100083

出　　处：《电子学报》2001年第z1期1912-1913,共2页Acta Electronica Sinica

摘　　要：应用时域有限差分 (FDTD)法 ,结合时域近场 远场转换公式 ,分析矩形波导斜切口面的辐射特性 .分析的斜切口面是把矩形波导管两个窄边同时渐削 ,宽边尺寸保持不变形成的辐射口面 .应用FDTD法分析 ,较精确地解决了波导边缘的绕射问题 .计算了主模激励时主面辐射方向图 ,与实验结果基本吻合 .本文为这种波导斜切口面天线的分析设计提供了一种较精确。An inclined aperture antenna based on an open ended rectangular waveguide was analyzed using FDTD method in conjunction with the time domain near zone to far zone transformation.The antenna is tapered at the opening on both narrow sides of a rectangular waveguide,while the wide sides are maintained.The deffraction field of the fringe is calculated using FDTD and the field pattern excited by the dominant mode is validated.

关 键 词：口面天线 FDTD 波导 天线方向图 

分 类 号：TN823[电子电信—信息与通信工程] TM15[电气工程—电工理论与新技术]