A Low-Profile and Broadband Circularly Polarized Folded Transmitarray Antenna Using Metasurfaces

IF 4.6 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-07-23 DOI:10.1109/LAWP.2026.3716693

Yan Liu;Lei Quan;Fangfang Duan;Bingqi Li;Kai Xie

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引用次数: 0

Abstract

This letter presents a low-profile and broadband folded transmitarray antenna for linear-to-circular polarization conversion using metasurfaces (MSs). The antenna consists of a top and a bottom MSs, along with an open waveguide feed located within the top MS. The top MS is designed to reflect linearly polarized waves and convert them into circularly polarized waves for full transmission, whereas the bottom MS enables a 90

$^\circ$

polarization rotation of incident linear polarization waves. Operating at a central frequency of 10.5 GHz, the electromagnetic waves emitted by the feed undergo three reflections between the top and bottom MSs, effectively reducing the antenna profile height to one-fourth that of traditional focusing transmitarray antennas. Excellent agreement is observed between the simulation and measurement results, demonstrating a 3 dB axial ratio bandwidth of 27%, a 3 dBi gain bandwidth of 28.7%, and a peak gain of 20.6 dBi at 10.5 GHz. The proposed folded array antenna shows substantial potential for applications in circularly polarized satellite communications.

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基于超表面的低轮廓宽带圆极化折叠发射阵列天线

这封信提出了一种低轮廓和宽带折叠发射阵列天线，用于使用超表面（MSs）进行线性到圆极化转换。该天线由顶部和底部的MS组成，以及位于顶部MS内的开放式波导馈电。顶部MS被设计用于反射线极化波并将其转换为圆极化波以实现完全传输，而底部MS使入射线极化波具有90$^\circ$极化旋转。馈源发射的电磁波工作在10.5 GHz的中心频率，在顶部和底部的MSs之间进行三次反射，有效地将天线轮廓高度降低到传统聚焦发射阵列天线的四分之一。仿真结果与测量结果非常吻合，在10.5 GHz时，3db轴比带宽为27%，3dbi增益带宽为28.7%，峰值增益为20.6 dBi。所提出的折叠阵列天线在圆极化卫星通信中显示出巨大的应用潜力。

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

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.