Modulated Frequency-Selective Doubly Curved Sub-Reflector for a Dual-Band Multiple Spot Beam Communication Satellite Antenna System

IF 4.6 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-15 DOI:10.1109/TAP.2024.3476944

Andreas Ericsson;Min Zhou;Stig B. Sørensen;Tonny Rubæk;Mathieu Riel;Nelson J. G. Fonseca

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Abstract

An antenna solution for broadband communication satellite applications is presented. The proposed antenna design provides a full dual-band (Tx/Rx) four-color multibeam coverage of Europe in K/Ka-band while utilizing only a single main reflector aperture. This solution is especially relevant for smaller platforms and secondary payloads. The antenna system consists of an offset Cassegrain antenna combining two multiple-feed-per-beam (MFB) feed clusters and a doubly curved modulated modulated frequency surface (FSS) sub-reflector, which is the key enabling technology validated in this work. By utilizing a modulated FSS design, the antenna system fulfills all radio frequency (RF) requirements that were specified on the antenna coverage parameters. An engineering model (EM) of the doubly curved FSS sub-reflector has been designed and fabricated. Its RF performance was characterized experimentally, and good agreement has been observed between simulations and measurements, thus validating the proposed concept.

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双频多点波束通信卫星天线系统的调制选频双弯曲副反射器

提出了一种宽带通信卫星天线解决方案。所提出的天线设计在K/ ka波段提供全双频（Tx/Rx）四色多波束覆盖欧洲，同时仅利用单个主反射器孔径。这种解决方案尤其适用于较小的平台和次要有效载荷。天线系统由一个偏移卡塞格伦天线组成，该天线结合了两个多波束馈电（MFB）馈电簇和一个双弯曲调制调制频率面（FSS）副反射器，这是本工作中验证的关键使能技术。通过使用调制FSS设计，天线系统满足天线覆盖参数上指定的所有射频（RF）要求。设计并制作了双曲面FSS副反射镜的工程模型。实验对其射频性能进行了表征，仿真结果与测量结果吻合良好，从而验证了所提出的概念。

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来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques