›› 2014, Vol. 27 ›› Issue (5): 56-.

• 论文 • 上一篇    下一篇

宽带高增益圆极化天线

文耀彤,刘能武,张志亚   

  1. (1.中兴通信股份有限公司 无线产品经营部,陕西 西安 710114;2.西安电子科技大学 电子工程学院,陕西 西安 710071)
  • 出版日期:2014-05-15 发布日期:2014-05-14
  • 作者简介:文耀彤(1968—),男,工程师。研究方向:基站射频电路,天线,软件无线电。E-mail:wenyaotong@zte.com.cn

Wideband Circularly Polarized Antenna with High Gain

WEN Yaotong,LIU Nengwu,ZHANG Zhiya   

  1. (1.Wireless Product Management Department,ZTE,Xi'an 710114,China;2.School of Electronic Engineering,Xidian University,Xi'an 710000,China)
  • Online:2014-05-15 Published:2014-05-14

摘要:

设计了一种宽带高增益圆极化天线。天线采用双同轴线激励以及威尔金森功分器和90°相位比较器的馈电网络形式实现了天线的宽带圆极化特性。该馈电网络形式能在较宽的频带范围内保持稳定的幅度和相位。通过在蝶形天线外围引入方形环,增加了天线的有效辐射面积,从而显著提高了天线的增益。测试结果显示,该圆极化天线VSWR<1.5的阻抗带宽达到63.6%,3 dB轴比带宽达到66.7%,且在1.1~1.6 GHz频段范围内,右旋圆极化增益>9.4 dB。

关键词: 天线, 圆极化, 馈电网络, 高增益

Abstract:

A wideband circular polarization antenna with high gain is designed.The antenna is excited by two coaxial baluns,and the feed network consists of a Wilkinson power divider and a 90°phase difference comparator,which can provide equal amplitude but in phase quadrature in the wideband frequency and improve the impedance bandwidth and AR bandwidth.By adding a rectangular ring around the bowtie dipoles,the effective radiation area is enhanced,and thus the gain of the antenna is improved.The measured results show that the proposed antenna can achieve a measured impedance bandwidth of 63.6% for VSWR≤1.5 and a 3-dB axial ratio bandwidth of 66.7%.The antenna has a stable peak circularly polarized gain better than 9.4 dBi ranging from 1.1 GHz to 1.6 GHz.

Key words: antenna;circular polarization;feed network;high gain

中图分类号: 

  • TN821+.1