A compact wideband circularly polarized dipole antenna with wide beamwidth

被引：0
|
作者：
Chen, Ling-Lu [1 ]
Chang, Lei [1 ]
Zhang, Jian-Qiang [1 ]
机构：
[1] 36 Res Inst CETC, Jiaxing 314033, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2024年 / 66卷 / 01期
关键词：
circularly polarized (CP) antenna; dipole; wide beamwidth; wideband; MICROSTRIP ANTENNA;
D O I：
10.1002/mop.34026
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) dipole antenna with compact size and wide beamwidth is proposed. To achieve a wide half-power beamwidth (HPBW), the dipole is designed to be a folded bowtie, and four rotationally symmetric vertical metal plates are placed on the square ground plane. A circular parasitic patch above the dipole arms improves the impedance bandwidth. By using a 3-dB coupler, the proposed antenna achieves wideband CP performance. The measured results show that an impedance bandwidth for VSWR <= 2 and a 3-dB axial-ratio (AR) bandwidth are from 0.76 to 2.1 GHz (93.7%). Moreover, a bandwidth of HPBW >= 102 degrees is from 0.76 to 1.8 GHz (81.2%).
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页数：9
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