A Loop-Line Antenna with Enhanced Bandwidth of Circular Polarization

被引：1

作者：

Hirose, Kazuhide ^{[1
]}

Nakatsu, Motoshi ^{[1
]}

Nakano, Hisamatsu ^{[2
]}

机构：

[1] Shibaura Inst Technol, Coll Engn, Tokyo 1358548, Japan

[2] Hosei Univ, Sci & Engn, Tokyo 1848584, Japan

来源：

INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION | 2020年 / 2020卷

关键词：

We investigate a circularly polarized (CP) transmission-line antenna composed of loop radiation elements; called a loop-line antenna. To enhance the CP wave bandwidth; an isolated loop radiation element is first analyzed using the method of moments. It is found that a CP wave bandwidth for a 3 dB axial-ratio criterion has a maximum value of 8%. On the basis of the analysis results; we design the loop-line antenna. It is found that the antenna shows a CP wave bandwidth of 6%; which is twice as wide as that of a conventional loop-line antenna. The analysis results are verified with experimental ones. In addition; a condition for wideband CP radiation is discussed and found to be a composite radiation element consisting of two CP loops. © 2020 Kazuhide Hirose et al;

D O I：

10.1155/2020/5216132

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We investigate a circularly polarized (CP) transmission-line antenna composed of loop radiation elements, called a loop-line antenna. To enhance the CP wave bandwidth, an isolated loop radiation element is first analyzed using the method of moments. It is found that a CP wave bandwidth for a 3 dB axial-ratio criterion has a maximum value of 8%. On the basis of the analysis results, we design the loop-line antenna. It is found that the antenna shows a CP wave bandwidth of 6%, which is twice as wide as that of a conventional loop-line antenna. The analysis results are verified with experimental ones. In addition, a condition for wideband CP radiation is discussed and found to be a composite radiation element consisting of two CP loops.

引用

页数：6