用于 CubeSat 的紧凑型超高频圆极化多频四臂天线。

Compact UHF Circularly Polarized Multi-Band Quadrifilar Antenna for CubeSat.

机构信息

Universite Cote d'Azur, Laboratoire d'Electronique, Antennes et Telecommunications (LEAT), 06903 Sophia Antipolis, France.

Centre National de Recherche Scientifique (CNRS), UMR7248, 06903 Sophia Antipolis, France.

出版信息

Sensors (Basel). 2023 Jun 6;23(12):5361. doi: 10.3390/s23125361.

DOI:10.3390/s23125361

PMID:37420528

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10301042/

Abstract

This article presents a multi-band right-hand circularly polarized antenna designed for the Cube Satellite (CubeSat). Based on a quadrifilar structure, the antenna provides circular polarization radiation suitable for satellite communication. Moreover, the antenna is designed and fabricated using two 1.6 mm thickness FR4-Epoxy boards connected by metal pins. In order to improve the robustness, a ceramic spacer is placed in the centerboard, and four screws are added at the corners to fix the antenna to the CubeSat structure. These additional parts reduce antenna damage caused by vibrations in the launch vehicle lift-off stage. The proposal has a dimension of 77 × 77 × 10 mm and covers the LoRa frequency bands at 868 MHz, 915 MHz, and 923 MHz. According to the measurements in the anechoic chamber, antenna gains with the values of 2.3 dBic and 1.1 dBic are obtained for the 870 MHz and 920 MHz, respectively. Finally, the antenna is integrated into a 3U CubeSat that was launched by a Soyuz launch vehicle in September 2020. The terrestrial-to-space communication link was measured, and the antenna performance was confirmed in a real-life scenario.

摘要

这篇文章介绍了一种为 CubeSat（立方卫星）设计的多频右手圆极化天线。该天线基于四元结构，提供适用于卫星通信的圆极化辐射。此外，该天线使用两块 1.6 毫米厚的 FR4-环氧树脂板通过金属销连接来设计和制造。为了提高稳健性，在中板上放置了一个陶瓷垫片，并在四个角上增加了四个螺丝，将天线固定在 CubeSat 结构上。这些附加部件减少了由于运载火箭起飞阶段的振动而导致的天线损坏。该设计的尺寸为 77×77×10 毫米，覆盖了 LoRa 频段的 868 MHz、915 MHz 和 923 MHz。根据在消声室中的测量结果，在 870 MHz 和 920 MHz 处分别获得了 2.3 dBi 和 1.1 dBi 的天线增益。最后，该天线被集成到一个于 2020 年 9 月由联盟号运载火箭发射的 3U CubeSat 中。测量了地面到太空的通信链路，并在实际场景中确认了天线性能。