J4 ›› 2014, Vol. 41 ›› Issue (5): 74-78.doi: 10.3969/j.issn.1001-2400.2014.05.013

• 研究论文 • 上一篇    下一篇



  1. (1. 西安电子科技大学 天线与微波技术重点实验室,陕西 西安  710071;
    2. 中国电子科学研究院,北京  100041)
  • 收稿日期:2013-05-28 出版日期:2014-10-20 发布日期:2014-11-27
  • 通讯作者: 吕政良
  • 作者简介:吕政良(1986-),男,西安电子科技大学博士研究生,E-mail:zhenglianglv@stu.xidian.edu.cn.
  • 基金资助:

    国家自然科学基金资助项目(61201023);新世纪优秀人才支持计划资助项目(NCET-11-0690); 高等学校博士学科点专项科研基金资助项目(20120203120011)

Wide-band analysis using the modified IE-FFT and physical optical hybrid method

Lü Zhengliang1,2;GONG Shuxi1;ZHANG Pengfei1;CHEN Wenfeng1;ZHAO Bo1   

  1. (1. Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an  710071, China;
    2. China Academy of Electronics and Information Technology, Beijing  100041, China)
  • Received:2013-05-28 Online:2014-10-20 Published:2014-11-27
  • Contact: Lü Zhengliang



关键词: 矩量法, 物理光学, 积分方程-傅里叶变换, 自适应频率采样, 宽带分析


A highly efficient computational electromagnetic technique based upon the well known PO formulation combined with the modified IE-FFT and adaptive Stoer-Bulirsch frequency-sampling method is applied to wide-band analysis of antennas radiating in the presence of electrically large conducting platforms. By interpolating Green's function and introducing the concept of empty groups, the modified single-level FFT algorithm which is based on the subdomain FFT acceleration is employed to reduce matrix storage and to accelerate all the matrix-vector multiplications in both the linear system for moments and the iterative solver. Otherwise, the correction of the near-interaction is avoided. For the frequency response of electric currents, the SB algorithm using the rational approximation solution and the recursive rules is utilized to achieve fast frequency sweeping. Due to the above modifications, the PO hybrid method utilizes fewer unknowns and requires less solution time. Numerical examples are given to verify its validity.

Key words: method of moments, physical optics, integral equation fast Fourier transform(IE-FFT), adaptive frequency-sampling, wide-band analysis