Circularly Polarized Folded Reflectarray Antenna

2023 International Microwave and Antenna Symposium (IMAS) Pub Date : 2023-02-07 DOI:10.1109/IMAS55807.2023.10066894

S. A. Soliman, Eman M. Eldesouki, A. Attiya, A. Freundorfer, Y. Antar

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引用次数: 1

Abstract

This paper presents the analysis and design of an integrated low-profile circularly-polarized folded reflectarray antenna (FRA) for wireless communication applications in the ku band. The proposed FRA consists of a main reflectarray (MR), a tilted linearly polarized (LP) planar dipole antenna and a transmitarray. The main reflectarray consists of 713 pentagonal patch elements on a grounded dielectric substrate. The reflecting elements are adjusted to produce a 90° phase shift between the reflection coefficients in the two principal planes. On the other hand, the transmitarray consists of conducting circular patches printed on a dielectric slab. The combination of the reflectarray and transmitarray are designed to convert the linearly polarized radiation of the feeding planar dipole antenna to circular polarization. In this work a small focal to diameter ratio (F/ D) is chosen to be 0. 4 to reduce the overall antenna size. This design operates in the band from 11.5 to 12.5 GHz and the results show that the maximum antenna gain 22 dBi and the AR is 1.17 dB at 12 GHz.

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圆极化折叠反射天线

本文分析和设计了一种用于ku波段无线通信的集成低轮廓圆极化折叠反射天线(FRA)。该天线由主反射天线(MR)、倾斜线极化平面偶极天线(LP)和发射阵列组成。主反射镜由713个在接地介质衬底上的五边形贴片元件组成。调整反射元件，使其在两个主平面的反射系数之间产生90°相移。另一方面，发射阵列由印刷在介电板上的导电圆形贴片组成。设计了反射阵与发射阵的组合，将进给平面偶极子天线的线极化辐射转换为圆极化辐射。在这项工作中，较小的焦径比(F/ D)被选择为0。4 .减小天线整体尺寸。本设计工作在11.5 ~ 12.5 GHz频段，结果表明，在12 GHz频段，天线最大增益为22 dBi, AR为1.17 dB。

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2023 International Microwave and Antenna Symposium (IMAS)

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