| 一种宽带全向圆极化天线简 |
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| 引用本文： | 全旭林,李融林.一种宽带全向圆极化天线简[J].电子学报,2014,42(1):187-190. |
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| 作者姓名： | 全旭林 李融林 |
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| 作者单位： | 华南理工大学电子与信息学院, 广东广州 510640 |
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| 基金项目： | 国家自然科学基金（No.61372009）；中央高校业务费（No.2013ZP0014）；高等学校博士学科点专项科研基金（No.200805610007） |
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| 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.
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| 关 键 词： | 全向天线 圆极化天线 宽带天线 |
| 收稿时间： | 2012-08-06 |
A Broadband Omnidirectional Circularly Polarized Antenna |
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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. |
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| Authors: | QUAN Xu-lin LI Rong-lin |
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| Affiliation: | School of Electronic and Information Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China |
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| 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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| Keywords: | omnidirectional antenna circularly polarized antenna broadband antenna |
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