An OAM Patch Antenna Design and Its Array for Higher Order OAM Mode Generation

被引：56

作者：

Guo, Chong ^{[1
]}

Zhao, Xunwang ^{[1
]}

Zhu, Cheng ^{[1
]}

Xu, Peng ^{[1
]}

Zhang, Yu ^{[1
]}

机构：

[1] Xidian Univ, Sch Elect Engn, Xian 710071, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2019年 / 18卷 / 05期

基金：

中国博士后科学基金;

关键词：

Characteristic mode analysis (CMA); circular polarization; orbital angular momentum (OAM); patch antenna; scalar beam; uniform circular array (UCA); vector beam; ORBITAL ANGULAR-MOMENTUM; METASURFACE;

D O I：

10.1109/LAWP.2019.2900265

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：

In this letter, a systematic design procedure is proposed on how to implement the characteristic mode analysis to design and optimize an orbital angular momentum (OAM) antenna with circular polarization. The main idea of this work is by combining proper high-order modes to fit the current distribution of the analytical model. It is shown that by using proper high-order modes, a single antenna element could act like an array making the antenna system more compact. As a prototype, a patch antenna working at the 2.4 GHz Wi-Fi bands to generate the right-hand circularly polarized OAM beam with topology charge l(OAM) = -1 is designed, fabricated, and measured to demonstrate the design method. In addition, an array composed by the proposed antenna element is designed and experimented. New physical phenomenon is found that the OAM modes of the antenna element and the array can be combined considering the multiplication theorem. The combination relaxes the restriction of vertical bar l(OAM)vertical bar < N/2 to some extent in comparison with the traditional uniform circular arrays for OAM generation.

引用

页码：816 / 820

页数：5

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