基于圆形天线阵的轨道角动量电磁波传播分析

Q2 Social Sciences

Advances in Engineering Education Pub Date : 2017-11-01 DOI:10.1109/PIERS-FALL.2017.8293208

Yuqi Yang, Wei Luo

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引用次数: 3

摘要

轨道角动量(OAM)电磁涡流技术是一种频谱效率高的通信复用技术。本文提出了一种用于微波中继通信的新型圆形天线阵列，它是OAM电磁波收发的硬件基础。该天线阵列由工作在e波段的喇叭天线组成，具有良好的极化纯度，可有效对抗无线信道中的极化衰落。通过天线形式和单元间距的优化设计，产生了具有圆极化和多模态涡旋OAM双重特性的电磁波。为了避免OAM模式在自由空间传输的退化，讨论了天线单元的数目以及电磁涡流波的传输距离与天线阵列形式的关系。通过对电磁波传播过程的仿真，得到了合理的OAM天线孔径。增益方向图和相位分布的稳定收敛性证明，结合先进的权值优化方法，圆形天线阵列可以应用于OAM中继通信。

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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Analysis of orbital angular momentum electromagnetic wave propagation based on circular antenna array

Orbital angular momentum (OAM) electromagnetic vortex technology is a kind of advantageous communication reuse technology with high spectral efficiency. This paper presents a novel circular antenna array for microwave relay communication, which is the transceiver hardware foundation of OAM electromagnetic wave. The antenna array is composed of horn antennas operating at E-Band, which has good polarization purity to effectively confront polarization fading in wireless channel. The electromagnetic waves with dual characteristics of circular polarization and multi-modal vortex OAM is generated with the optimization design of antenna forms and distance between the elements. In order to avoid the degradation of OAM mode transmission in the free space, the number of antenna elements and relation between transmission distance of electromagnetic vortex wave and antenna array form are discussed. A reasonable OAM antenna aperture is obtained based on the simulation of electromagnetic waves propagation. The stable convergence of gain pattern and phase distribution proves the circular antenna array could be applied to OAM relay communication by combining with advanced weights optimization method.

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来源期刊

Advances in Engineering Education Social Sciences-Education

CiteScore

2.90

自引率

0.00%

发文量

期刊介绍： The journal publishes articles on a wide variety of topics related to documented advances in engineering education practice. Topics may include but are not limited to innovations in course and curriculum design, teaching, and assessment both within and outside of the classroom that have led to improved student learning.