应用科学学报

• 信号与信息处理 • 上一篇    下一篇

带有寄生螺旋线的变升角轴向模螺旋天线

杨放 1;2, 张凯 1, 陈晨 1, 郭陈江 1, 许家栋 1   

  1. 1. 西北工业大学 电子信息学院, 陕西 西安 710072; 2. 西安建筑科技大学 信控学院, 陕西 西安 710055

  • 收稿日期:2008-06-27 修回日期:2008-09-08 出版日期:2008-12-10 发布日期:2008-12-10
  • 通信作者: 杨放

Axial Mode Helical Antenna with Variable Pitch Angle and Parasitic Helix Wire

YANG Fang 1;2, ZHANG Kai 1, CHEN Chen 1, GUO Chenjiang 1, XU Jia-dong 1   

  1. 1. School of Electronics and information, Northwestern Polytechnical University, Xi'an 710072, China; 2. School of Information and Control Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
  • Received:2008-06-27 Revised:2008-09-08 Online:2008-12-10 Published:2008-12-10
  • Contact: YANG Fang

摘要: 为了改善轴向模螺旋天线的辐射特性,把变升角和加绕寄生螺旋线两种方法结合起来,设计了一种带有附加螺旋线的变升角螺旋天线. 用FEKO软件对其辐射特性进行仿真,得到天线的方向图、增益和轴比等辐射特性. 结果表明,这种方法提高了天线的方向性系数,在较宽的频率范围内具有较好的圆极化特性,是改善轴向模螺旋天线辐射特性的一种简单且有效的办法.

关键词: 寄生螺旋线, 变升角, 螺旋天线

Abstract: A helical antenna with a variable pitch angle and a parasitic helix wire is designed to improve radiation performance of helical antennas. Its radiation properties including radiation patterns, power gain and axial ratio are simulated using the software FEKO. The results show that power gain can be improved. It is circularly polarized in a wide bandwidth. The method is simple and efficient for improving radiation performance of axial mode helical antennas.

Key words: parasitic helix wire, variable pitch angle, helical antenna

中图分类号: