J4 ›› 2009, Vol. 36 ›› Issue (6): 1034-1038.

• 研究论文 • 上一篇    下一篇

一种新型超宽带渐变槽线天线设计

宋跃;焦永昌;张福顺;王乃彪   

  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)
  • 收稿日期:2008-10-06 出版日期:2009-12-20 发布日期:2010-01-20
  • 通讯作者: 宋跃
  • 作者简介:宋跃(1982-),男,西安电子科技大学博士研究生,E-mail: ysong@mail.xidian.edu.cn.

Design of a novel ultra-wideband tapered slot antenna

SONG Yue;JIAO Yong-chang;ZHANG Fu-shun;WANG Nai-biao   

  1. (Key Lab. of Antennas and Microwave Technology, Xidian Univ., Xi'an  710071, China)
  • Received:2008-10-06 Online:2009-12-20 Published:2010-01-20
  • Contact: SONG Yue

摘要:

设计并制作了一种新型微带馈电的渐变槽线天线.采用改进的微带-槽线过渡,更好地解决了超宽带天线的阻抗匹配问题.提出一种新型渐变辐射曲线,有效地改善了低频段的匹配特性.实物样机的测试结果表明,在 0.92~ 14.25GHz频带内该天线的电压驻波比小于 2.0∶1,带宽比达到 15.4∶1,而且其带内辐射方向图的前后比大于 15dB,交叉极化低于 -18dB.

关键词: 超宽带, 渐变槽线天线, 微带-槽线过渡

Abstract:

A microstrip fed ultra-wideband tapered slot antenna is designed and fabricated. The wideband impedance matching is obtained by the use of a modified microstrip/slotline transition. The improvement of impedance characteristics at the lower band is achieved by introducing a novel flare curve as a radiation part. The measured results of the proposed antenna demonstrate that this directional antenna achieves a ratio bandwidth of  15.4∶1 for VSWR≤2 from 0.92 to  14.25GHz. The front-to-back ratio and cross polarization ratio of its radiation patterns over the operating band are greater then 18 dB and less than  -18dB, respectively.

Key words: ultra-wideband, tapered slot antenna, microstrip-slot transition

中图分类号: 

  • TN823.24