A loop antenna with enlarged bandwidth of circular polarization — its application in a comb-line antenna

被引:0
|
作者
Hirose K. [1 ]
Nakatsu M. [1 ]
Nakano H. [2 ]
机构
[1] College of Engineering, Shibaura Institute of Technology, Tokyo
[2] Science and Engineering, Hosei University, Tokyo
关键词
Antenna grounds - Directional patterns (antenna) - Bandwidth - Method of moments - Slot antennas;
D O I
10.2528/PIERC20071902
中图分类号
学科分类号
摘要
—Using the moment method, we analyze a loop antenna with a perturbation segment in the presence of a ground plane. First, the radiation characteristics versus loop height above the ground plane are investigated. It is found that as the loop height increases to more than 0.2 wavelengths, a novel antenna other than a conventional one can exist, showing an enlarged bandwidth of 9% for a 3 dB axial-ratio criterion. Next, the radiation mechanism of the novel antenna is compared with that of the conventional one. Last, the novel loop is used in a comb-line antenna as a radiation element. It is found that the CP wave bandwidth is five times as wide as that of a conventional comb-line antenna. The analysis results are verified by experimental work. © 2020, Electromagnetics Academy. All rights reserved.
引用
收藏
页码:175 / 184
页数:9
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