J4 ›› 2010, Vol. 37 ›› Issue (1): 148-151.doi: 10.3969/j.issn.1001-2400.2010.01.026

• 研究论文 • 上一篇    下一篇

一种改进的共面波导馈电圆极化天线阵

张厚1;郑宏兴2;王剑1
  

  1. (1. 空军工程大学 导弹学院,陕西 三原  713800;
    2. 天津工程师范学院 天线与微波技术研究所,天津  300222)
  • 收稿日期:2008-12-30 出版日期:2010-02-20 发布日期:2010-03-29
  • 作者简介:张厚(1962-),男,空军工程大学教授,E-mail: wamer88@163.com.
  • 基金资助:

    国家自然科学基金资助项目(60871026)

Improved CPW-fed circular polarization antenna array

ZHANG Hou1;ZHENG Hong-xing2;WANG Jian1   

  1. (1. Missile Inst. of Air Force Eng. Univ., San Yuan  713800, China;
    2. Inst. of Antenna and Microwave Tech., Tianjin Univ. of Tech. and Edu., Tianjin  300222, China)
  • Received:2008-12-30 Online:2010-02-20 Published:2010-03-29

摘要:

针对传统平面阵列天线圆极化轴比带宽窄的不足,将顺序旋转馈电技术与共面波导馈电相结合,对一种共面波导馈电的圆极化天线阵进行了改进,适当选择天线单元的旋转角度并对馈线进行相应的相位补偿,就可以增加圆极化天线阵的轴比带宽.仿真结果表明,改进后的阵列天线轴比带宽由传统的0.9%增加到3.7%,同时阵列天线的阻抗带宽也由传统的3.2%增加到6.9%.

关键词: 圆极化天线, 轴比, 带宽, 共面波导

Abstract:

The technique of sequentially rotating the feed position is introduced to increase the axial-ratio bandwidth of a circular polarized antenna array fed with a coplanar waveguide. The axial-ratio bandwidth can be increased by choosing the rotating angle of the antenna properly and compensating a corresponding phase to the feed line. Calculated results show that the axial-ratio bandwidth of the improved array is increased to 3.7%, while the axial-ratio bandwidth of the conventional array is only 0.9%. Meanwhile, the impedance bandwidth of the improved array is increased to 6.9%, compared with the conventional array whose impedance bandwidth is only 3.2%.

Key words: circular polarization antenna, axial-ratio, bandwidth, coplanar waveguide