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一种轴比性能提升且臂长缩短的平面螺旋天线

发表时间:2015-09-30  浏览量:1389  下载量:560
全部作者: 黄惠芬,吴俊锋
作者单位: 华南理工大学电子与信息学院
摘 要: 提出了一种新型的平面螺旋天线。与传统阿基米德螺旋天线相比,新天线轴比性能得到提升,同时臂长更短。改进的天线结合了幂螺旋天线的低频特性和阿基米德螺旋天线的高频特性。天线外围部分与幂螺旋天线结构相似,目的在于改进低频特性,天线中心部分与阿基米德螺旋天线相似,目的在于保持高频特性。研究结果显示,改进的天线和传统阿基米德天线相比,低频端轴比有了明显的改进,幂螺旋天线高频端轴比退化的问题也得到了解决。新天线臂长比传统阿基米德天线缩短46.2%,比幂螺旋天线缩短63.5%.
关 键 词: 无线电波传播;平面螺旋天线; 轴比; 臂长
Title: A planar spiral antenna with improved axial ratio and shorted arm length
Author: HUANG Huifen, WU Junfeng
Organization: School of Electronic and Information Engineering, South China University of Technology
Abstract: A new spiral antenna is proposed in this paper. The developed antenna has improved axial ratio and shorted arm length, compared with the traditional Archimedes spiral antenna. The developed spiral antenna combines the low frequency characteristic of power spiral antenna and high frequency characteristic of Archimedean spiral antenna. The growth rate of radial distance at large winding angle is closed to power spiral for improved axial rate in low frequencies, and the growth rate at small winding angle is closed to Archimedean spiral for good axial rate in high frequencies. The results reveal that the developed spiral antenna has noticeable improved axial rate at low frequencies compared with Archimedean spiral antenna, and the problem of axial rate degradation of power spiral antenna is also solved. The arm length is shorted by 46.2% compared to conventional Archimedean spiral antenna, and 63.5% compared to power spiral antenna.
Key words: radio wave propagation; planar spiral antenna; axial ratio; arm length
发表期数: 2015年9月第18期
引用格式: 黄惠芬,吴俊锋. 一种轴比性能提升且臂长缩短的平面螺旋天线[J]. 中国科技论文在线精品论文,2015,8(18):1893-1898.
 
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