A Wideband Circularly Polarized Antenna with Characteristic Mode Analysis

被引：7
|
作者：
Chang, Lei [1 ]
Chen, Ling-Lu [1 ]
Zhang, Jian-Qiang [1 ]
Li, Dan [2 ]
机构：
[1] CETC, 36 Res Inst, Jiaxing 314033, Peoples R China
[2] Zhejiang Longyou Gongren Elect Co Ltd, Quzhou 324014, Longyou, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION | 2020年 / 2020卷
关键词：
PATCH ANTENNA; MICROSTRIP ANTENNA;
D O I：
10.1155/2020/5379892
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：
A wideband circularly polarized (CP) antenna is presented to achieve enhanced impedance, axial ratio (AR), and gain bandwidths. The antenna consists of two circular patches, a split-ring microstrip line with six probes, and a circular ground plane. By using these six probes which are placed in sequence on the split-ring microstrip line, the operating bandwidth of the proposed antenna is increased. The characteristic mode method is used to analyze different modes of the antenna and reveal the mechanism of extending the 3-dB AR bandwidth. Measured results show that the proposed antenna obtains an impedance bandwidth of 1.486-2.236 GHz (40.3%) forS(11) <= -18 dB, a 3-dB AR bandwidth of 1.6-2.2 GHz (31.6%), and a boresight gain of 8.89 +/- 0.87 dBic.
引用
收藏
页数：13
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