A Broadband Omnidirectional Circularly Polarized Antenna

QUAN Xu-lin; LI Rong-lin

doi:10.3969/j.issn.0372-2112.2014.01.030

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A Broadband Omnidirectional Circularly Polarized Antenna

更新时间：2025-07-16

- A Broadband Omnidirectional Circularly Polarized Antenna
- Acta Electronica Sinica Vol. 42, Issue 1, Pages: 187-190(2014)
- 作者机构：
  
  华南理工大学电子与信息学院,广东,广州,510640
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61372009);Funds for the Central Universities (No.2013ZP0014);Research Fund for the Doctoral Program of Higher Education of China (No.200805610007)
- DOI：10.3969/j.issn.0372-2112.2014.01.030
  CLC： TN82
- Published：2014
- 稿件说明：
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QUAN Xu-lin, LI Rong-lin. A Broadband Omnidirectional Circularly Polarized Antenna[J]. Acta Electronica Sinica, 2014, 42(1): 187-190.
DOI：

QUAN Xu-lin, LI Rong-lin. A Broadband Omnidirectional Circularly Polarized Antenna[J]. Acta Electronica Sinica, 2014, 42(1): 187-190. DOI： 10.3969/j.issn.0372-2112.2014.01.030.

摘要

基于环天线-偶极子模型，本文提出一种宽带全向圆极化天线.天线包含四对围绕圆柱放置的倾斜振子和一个宽带馈电网络.每对振子包含一个主辐射振子和一个用以增加带宽的寄生振子.馈电网络包括四个宽带巴伦和一个阻抗匹配电路.实验结果表明，该天线15-dB回波损耗带宽和3-dB轴比带宽分别为31%（1.68-2.31GHz）和30%（1.7-2.3GHz），水平面不圆度小于1dB.

Abstract

This paper proposes a broadband omnidirectional circularly polarized (CP) antenna based on a loop-dipole configuration.The antenna consists of four pairs of titled dipoles and a broadband feeding network.The four pairs of titled dipoles are wrapped around a cylinder.Each pair of titled dipoles includes a driven dipole and a parasitic element which is introduced to enhance the bandwidth.The feeding network is composed of four broadband baluns and an impedance matching circuit.Experimental results show that this CP antenna has a 15-dB return loss bandwidth of 31%(1.68-2.31GHz) and a 3-dB axial ratio bandwidth of 30%(1.7-2.3GHz).The gain variation in the horizontal plane is less than 1dB

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