OAM waves with fewer redundant OAM modes generated by two circularly polarized antenna arrays

IF 4.1 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

ICT Express Pub Date : 2024-08-01 DOI:10.1016/j.icte.2024.02.004

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引用次数: 0

Abstract

Two circularly polarized antenna arrays, which reduce two redundant OAM modes, are proposed in this paper. One antenna array is composed of 8 right-handed circularly polarized (RHCP) antennas and radiates OAM mode $l$ in $x$ component, OAM mode $l$ in $y$ component and OAM mode $(l + 1)$ in $z$ component. The other antenna array has 8 left-handed circularly polarized (LHCP) antennas and transmits OAM mode $l$ in $x$ component, OAM mode $l$ in $y$ component and OAM mode $(l - 1)$ in $z$ component. The RHCP and LHCP antenna arrays produce OAM waves with fewer redundant OAM modes compared to the traditional single-direction antenna array. The feed excitations of the two circularly polarized antenna arrays have the same feeding system, which includes power dividers and phase shifters. The reflection coefficient parameters, radiation patterns and phase distributions are measured to display the radiated characteristics of the two proposed methods. Both the simulation and the experimental results demonstrate the effectiveness of the proposed methods.

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两个圆极化天线阵列产生的 OAM 波具有更少的冗余 OAM 模式

本文提出了两个圆极化天线阵列，可减少两种冗余 OAM 模式。其中一个天线阵列由 8 个右旋圆极化（RHCP）天线组成，在 x 分量中辐射 OAM 模式 l，在 y 分量中辐射 OAM 模式 l，在 z 分量中辐射 OAM 模式 (l+1)。另一个天线阵列有 8 个左旋圆极化（LHCP）天线，在 x 分量中发射 OAM 模式 l，在 y 分量中发射 OAM 模式 l，在 z 分量中发射 OAM 模式 (l-1)。与传统的单向天线阵列相比，RHCP 和 LHCP 天线阵列产生的 OAM 波具有更少的冗余 OAM 模式。两个圆极化天线阵列的馈电激励具有相同的馈电系统，包括功率分配器和移相器。对反射系数参数、辐射模式和相位分布进行了测量，以显示两种拟议方法的辐射特性。仿真和实验结果都证明了所提方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ICT Express Multiple-

CiteScore

10.20

自引率

1.90%

发文量

167

审稿时长

35 weeks

期刊介绍： The ICT Express journal published by the Korean Institute of Communications and Information Sciences (KICS) is an international, peer-reviewed research publication covering all aspects of information and communication technology. The journal aims to publish research that helps advance the theoretical and practical understanding of ICT convergence, platform technologies, communication networks, and device technologies. The technology advancement in information and communication technology (ICT) sector enables portable devices to be always connected while supporting high data rate, resulting in the recent popularity of smartphones that have a considerable impact in economic and social development.