| 一种用于GPS的小型化全向圆极化天线设计 |
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| 引用本文： | 王晨阳,刘英,贾永涛,王侃.一种用于GPS的小型化全向圆极化天线设计[J].南京气象学院学报,2019,11(1):53-56. |
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| 作者姓名： | 王晨阳 刘英 贾永涛 王侃 |
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| 作者单位： | 西安电子科技大学 天线与微波技术重点实验室, 西安, 710071,西安电子科技大学 天线与微波技术重点实验室, 西安, 710071,西安电子科技大学 天线与微波技术重点实验室, 西安, 710071,南京电子技术研究所, 南京, 210039 |
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| 基金项目： | 国家自然科学基金（61871309，61801346） |
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| 摘 要： | 圆极化天线在卫星导航通信、雷达及信息对抗上有非常重要的作用.本文提出了一种工作在GPS L1频段（1.575 GHz）上的小型圆极化天线，它具有较低的剖面和较小的尺寸，结构紧凑、馈电简单，并呈现良好的全向圆极化特性.天线的辐射结构由一个4轴弧形贴片和直接馈电的金属柱组成，同时，贴片内环引入额外的弧形枝节，外环枝节的末端引入4个短路探针来实现天线的小型化.通过Ansoft HFSS 16.1对该天线进行仿真验证，结果表明，该圆极化天线在1.575 GHz频段上具有良好的驻波特性，且工作频带内的轴比<3 dB，最高增益达到0.2 dBic.
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| 关 键 词： | 全向圆极化 短路针 轴比 低剖面 |
| 收稿时间： | 2018/11/29 0:00:00 |
A miniaturized omnidirectional circularly polarized antenna design for GPS applications |
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| WANG Chenyang,LIU Ying,JIA Yongtao and WANG Kan.A miniaturized omnidirectional circularly polarized antenna design for GPS applications[J].Journal of Nanjing Institute of Meteorology,2019,11(1):53-56. |
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| Authors: | WANG Chenyang LIU Ying JIA Yongtao and WANG Kan |
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| Institution: | Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi''an 710071,Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi''an 710071,Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi''an 710071 and Nanjing Research Institute of Electronics and Technology, Nanjing 210039 |
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| Abstract: | Circularly polarized antennas play an important role in communication through satellite navigation, radar, and information confrontation. In this letter, a miniaturized circularly polarized antenna operating in the GPS L1 band (1.575 GHz) is proposed. The proposed antenna possesses the advantages of having a low profile, small size, and compact structure, which in turn imply superior omnidirectional circular polarization. The radiation structure of the proposed antenna comprises a four-axis arched patch and a direct feeding metallic pin. Four inner additional arcs and four shorting pins were introduced for achieving the antenna miniaturization. The proposed design was verified by employing the Ansoft HFSS 16.1 simulation tool. The simulation results indicate that the proposed circularly polarized antenna matches well at the frequency of 1.575 GHz. Furthermore, the axial ratio is found to be less than 3 dB at the operating frequency band and the peak gain can reach a value of 0.2 dBic. |
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| Keywords: | omnidirectional circular polarization shorting pins axial ratio low-profile |
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