Developing Wideband Dual-Circularly Polarized Antenna With Simple Feeds Using Magnetoelectric Dipoles
Developing Wideband Dual-Circularly Polarized Antenna With Simple Feeds Using Magnetoelectric Dipoles
复制标题
使用磁电偶极子开发具有简单馈电的宽带双圆极化天线
DOI：
10.1109/lawp.2020.2988560
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发表时间：
2020-06
影响因子：
4.2
通讯作者：
Zhou Jianyi
中科院分区：
文献类型：
--
作者：
Chen Weiheng;Yu Zhigiang;Zhai Jianfeng;Zhou Jianyi
本文提出了一种新型的宽带磁电（ME）偶极子天线，该天线具有双圆极化和单向辐射特性。所提出的天线基于两个相互垂直的子磁电偶极子，由四个V形贴片和四个V形……（此处“V - se”表述不完整，推测可能是“V - shaped slots”之类，暂按此翻译）V形缝隙实现。
A novel wideband magnetoelectric (ME) dipole antenna with dual circular polarization and unidirectional radiation is proposed in this letter. The proposed antenna is based on two perpendicular sub-ME dipoles realized by four V-shaped patches and four V-section columns, and each of them is composed of an electric dipole and a magnetic dipole in parallel. Fed by two simple Γ-shaped feeds, 90° phase difference between the electric dipole and the magnetic dipole in each of the sub-ME dipoles is achieved, hence the dual-circularly polarized radiation is generated. Wide impedance bandwidth is obtained in virtue of the two kinds of dipoles being excited simultaneously. The 3 dB axial-ratio (AR) bandwidth is enlarged by optimizing the V-section columns and a circular cavity. Besides, the port isolation is apparently enhanced by adding slits on the patches and elaborating different spacings between each feed and its two-sided columns. Measured results show that the proposed antenna has many appealing properties, such as a unidirectional radiation pattern, an impedance bandwidth (reflection coefficients ≤–10 dB and port isolation ≥ 10 dB) of 51.1% and a 3 dB AR bandwidth of 41.9%.
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