J4 ›› 2015, Vol. 42 ›› Issue (2): 152-156.doi: 10.3969/j.issn.1001-2400.2015.02.025

• 研究论文 • 上一篇    下一篇

一种低副瓣锐截止波束赋形阵列天线设计

高军;周禹龙;杨群;曹祥玉   

  1. (空军工程大学 信息与导航学院,陕西 西安 710077)
  • 收稿日期:2013-11-04 修回日期:2014-01-07 出版日期:2015-04-20 发布日期:2015-04-14
  • 通讯作者: 高军
  • 作者简介:高军(1962-),男,教授, E-mail: gjgj9694@sina.com.
  • 基金资助:
    基于分形人工电磁材料的阵列天线RCS缩减技术研究;基于新型人工国家自然科学基金资助项目(61271100,61471389);陕西省自然科学基金资助项目(2012JM8003)

Design of an array antenna with a low-sidelobe and sharp-cutoff pattern shaping

GAO Jun;ZHOU Yulong;YANG Qun;CAO Xiangyu   

  1. (Information and Navigation Institute, AFEU, Xi'an 710077, China)
  • Received:2013-11-04 Revised:2014-01-07 Online:2015-04-20 Published:2015-04-14
  • Contact: GAO Jun

摘要: 采用联合DFP和BFGS变尺度,结合全局寻优算法,通过优化阵列各单元馈电幅度和相位分布,设计了一种满足低副瓣锐截止波束赋形要求的阵列天线.该阵列由26个印刷振子单元天线组成,各单元馈电电路采用带状线环形桥.馈电电路网络采用带状线结构,整个馈电网络和印刷天线采用一体化设计,具有插入损耗小,结构紧凑的特点.实测表明,3dB波束宽度为11°,水平面锐截止为5.83dB/(°),副瓣低于-20dB.天线设计满足指标要求,并已获得应用.

关键词: 阵列天线, 波束赋形, 副瓣, 锐截止, 优化算法

Abstract: A compact array antenna is designed with variable metric algorithms, namely Davidon-Fletcher-Powell (DFP) and Broyden-Fletcher-Goldfarb-Shanno (BFGS). Using a global optimization method, the amplitude and phase distribution of current excitations are optimized to achieve a low-sidelobe and sharp-cutoff pattern shaping. The array, consisting of 26 parallel printed dipoles, is powered by a stripline-circuit distribute network connecting 26 individual stripline ring-hybrid feed circuits. The feed circuit network and the printed antenna are designed all together, leading to a low insertion loss and a compact size. Measurements show that the bandwidth is 11° at 3dB, that the sharp cutoff on the horizon is 5.83dB/(°), and that the sidelobes are less than -20dB. The array antenna meets and exceeds demanded parameters and has been applied to a certain microwave landing system.

Key words: array antenna, pattern shaping, sidelobe, sharp cutoff, optimization method

中图分类号: 

  • TN821.8