As the “right-hand man” to space communications, navigation, environmental monitoring, and other satellite systems, the space active phased array antenna is capable of scanning and covering long distances and large scale ranges through its complex deployment mechanism, large physical aperture, and lightweight structural design. In comparison with mechanical scanning antennas, the space active phased array antennas can realize flexible beam scanning through the active phased array principle, while simultaneously achieving a high gain, low sidelobe, high resolution, and high reliability. Improving the comprehensive performance of the satellite is crucial with the rapid development requirement and large application field. In this article, the development history of the space active phased array antennas is summarized, and these antennas are characterized by the following structural features: large aperture, deployment mechanism, and lightweight configuration. The state of the art of space deployable active phased array antennas is also presented. Furthermore, seven crucial design technologies of antenna essential components are discussed, and the development trends of structural technologies of the space deployable active phased array antenna are demonstrated.

中文翻译：

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空间相控阵天线的发展：结构设计的观点

作为空间通信、导航、环境监测等卫星系统的“得力助手”，空间有源相控阵天线凭借其复杂的部署机制、大物理孔径、和轻量化的结构设计。与机械扫描天线相比，空间有源相控阵天线可以通过有源相控阵原理实现灵活的波束扫描，同时实现高增益、低旁瓣、高分辨率和高可靠性。卫星的发展要求快，应用领域大，提高卫星的综合性能至关重要。本文总结了空间有源相控阵天线的发展历程，这些天线具有以下结构特点：大口径、部署机制和轻量化配置。还介绍了空间可部署有源相控阵天线的最新技术。此外，还讨论了天线关键部件的七项关键设计技术，展示了空间可部署有源相控阵天线结构技术的发展趋势。