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应用科学学报 ›› 2006, Vol. 24 ›› Issue (6): 653-655.

• 研究简报 • 上一篇    下一篇

基于奇、偶模技术的FDTD分析对称结构频率选择表面

周永刚1, 徐金平2   

  1. 1. 南京航空航天大学信息科学与技术学院, 江苏南京 210016;
    2. 东南大学毫米波国家重点实验室, 江苏南京 210096
  • 收稿日期:2005-09-05 修回日期:2005-11-17 出版日期:2006-11-30 发布日期:2006-11-30
  • 作者简介:周永刚,博士生,讲师,研究方向:计算电磁学、电磁兼容,E-mail:zyg405@nuaa.edu.cn;徐金平,教授,博导,研究方向:计算电磁学、毫米波技术及其应用,E-mail:jpxu@seu.edu.cn
  • 基金资助:
    航空科学基金(03F52043);武器装备预研基金(514470502JW0601)资助项目

FDTD Analysis of Symmetrical FSS Based on Even-Odd Mode

ZHOU Yong-gang1, XU Jin-ping2   

  1. 1. College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. StateKey Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
  • Received:2005-09-05 Revised:2005-11-17 Online:2006-11-30 Published:2006-11-30

PDF

79

被引次数

2

摘要： 推导了在单色波奇模和偶模入射情况下,周期边界条件的时域形式,并采用基于该奇、偶模周期边界条件的时域有限差分法(FDTD),对一个介质基片上的金属条带所构成的二维频率选择表面(FSS)在斜入射情况下的散射场进行了计算,数值结果与传统的双平面波法的计算结果吻合,而所需内存节约了50%,计算效率提高了一倍.

关键词: 奇、偶模方法, 时域有限差分法, 频率选择表面

Abstract: In this paper, periodic boundary conditions in the time-domain excited by single frequency odd mode and even mode incidence are derived.The scattered field of a 2-D FSS formed by infinite-periodic strip grating with a dielectric support and excited by a single-frequency obliquely incident plane wave is simulated with FDTD based on the odd-andeven mode technique.Compared with the dual-plane wave method, perfect agreement between numerical results is achieved.At the same time, the required memory size is reduced by 50% and the computation efficiency is improved by 100%.Validity and applications of the proposed method is demonstrated.

Key words: odd-even mode, FDTD, frequency selective surface (FSS)

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