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应用科学学报 ›› 2009, Vol. 27 ›› Issue (4): 381-386.

• 电子技术 • 上一篇    下一篇

应用遗传算法的电大尺寸载体附近天线阵方向图综合

张凯 陈晨 郭陈江 许家栋   

  1. 西北工业大学电子信息学院，西安710072
  • 收稿日期:2008-12-16 修回日期:2009-06-14 出版日期:2009-07-30 发布日期:2009-07-30
  • 作者简介:张凯，博士生，研究方向：天线设计与优化、电子对抗，E-mail: zhangkai@mail.nwpu.edu.cn；郭陈江，教授，博导，研究方向：微波通信、电磁兼容、天线设计与优化，E-mail: cjguo@nwpu.edu.cn；许家栋，教授，博导，研究方向：电磁计算、天线设计与优化、微波测量，E-mail: jdxu@nwpu.edu.cn
  • 基金资助:
    陕西省自然科学基础研究计划基金(No.2006F15)资助项目

Synthesis of Radiation Pattern Using Genetic Algorithm for Antenna Array near Electrically Large Platform

  1. School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, China
  • Received:2008-12-16 Revised:2009-06-14 Online:2009-07-30 Published:2009-07-30

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1601

被引次数

2

摘要：

采用矩量法结合一致性几何绕射理论分析电大尺寸载体附近天线阵列的辐射方向图，并使用遗传算法对阵列的方向图进行综合. 以有限长圆柱导体附近由半波振子组成的十元天线阵为例，用这种方法对阵元馈电电压的幅度和相位进行优化，得到了预期的方向图. 与单纯的低频或者高频算法相比，该算法具有计算速度快、精确度高、优化效果好的特点.

关键词: 矩量法, 一致性几何绕射理论, 遗传算法, 方向图综合

Abstract:

A hybrid technique that combines the moment methods (MoM) with the uniform geometrical theory of diffraction (UTD) is presented. The method can accurately and efficiently compute the radiation pattern of an antenna array located near an electrically large platform. An optimization process based on the genetic algorithm(GA) is used to produce a desired radiation pattern. Usefulness of the proposed technique is shown by an example of a ten-element half-wavelength dipole array placed close to a finite-length PEC circular cylinder. Amplitude and phase of the element excited voltage are optimized using the method. Compared to other methods, the optimization technique based on GA and MoM-UTD is effective and accurate, and has high performance.

Key words: moment methods, uniform geometrical theory of diffraction, genetic algorithm, pattern synthesis

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