Generating Steering Orbital Angular Momentum Vortex Beams Using Conical Conformal Array Antenna

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-11-19 DOI:10.1109/LAWP.2024.3502398

Shilong Tan;Shixing Yu;Na Kou

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Abstract

In this letter, we propose using the conical conformal array antenna to launch the steering electromagnetic orbital angular momentum (OAM) vortex waves. First, the theoretical calculation method for generating the steering OAM beams using conical array antenna is deduced and the formula of compensated phase shift for each antenna unit located in the conical array is derived. In addition, a polarization correction approach is proposed to achieve better radiation characteristics of the OAM vortex beam. Next, a prototype of a conical conformal array antenna, which consists of 114 U-slot microstrip patch antennas, is fabricated and experimentally verified. The measured results indicate that using the conical array antenna to launch steering OAM vortex beams directed at the elevation angle of 0° to 60° can prevent significant distortion and guarantee high mode purity even though the scanning angle becomes large. This could serve as a reference for potential future applications of electromagnetic vortex communication on a conformal carrier.

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利用锥形共形阵列天线产生转向轨道角动量涡旋光束

本文提出利用锥形共形阵天线发射转向电磁轨道角动量涡旋波。首先，推导了圆锥阵列天线产生定向OAM波束的理论计算方法，推导了圆锥阵列中各天线单元的补偿相移公式；此外，提出了一种偏振校正方法，使涡旋光束具有更好的辐射特性。其次，制作了由114根u型槽微带贴片天线组成的锥形共形阵列天线样机，并进行了实验验证。测量结果表明，使用锥形阵列天线发射定向角为0°~ 60°的OAM涡旋波束，即使扫描角变大，也能防止明显的畸变，保证较高的模式纯度。这为未来在共形载波上应用电磁涡流通信提供了参考。

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.