The ultra-large microwave-transmitting antenna has attracted great research interest in Space Solar Power Station (SSPS). This study aims to explore the design of a new type of ultra-large planar deployable structures for SSPS. This structure has the merits of a large folding ratio and reliable new driving/locking systems with high stiffness. The primary novelty is the new planar deployable structure, of which the basic module is composed of three square units. On the opposite sides of the square unit, torsion springs in the driving/locking systems provide the driving force for deployment. There are three types of driving/locking systems and two types of member bars in each planar deployable structure, which can deploy in both horizontal and vertical directions from the initial folded state. In the thickness direction, there exists an option between deployable (with driving/locking systems) and undeployable (without driving/locking systems) scheme. We describe the design details and working principle of driving/locking systems. The deployment of the basic module is then simulated. Considering the carrying capacity of the future heavy launchers, a large deployable subarray, which consists of the repeating modules, with a full length of 50 m and a width of 7 m is designed and analyzed. Moreover, the initial folded size of the subarray is only 4.8 m × 4.8 m. Finally, we propose a SSPS model with one 200 m-caliber antenna composed of multiple subarrays and two 600 m-length solar cell arrays. Dynamic analysis for this SSPS model shows that the stiffness of this basic deployable structure satisfies the requirements of ultra-large SSPS's performance.

超大型微波传输天线引起了太空太阳能电站（SSPS）的巨大研究兴趣。这项研究旨在探索用于SSPS的新型超大型平面可展开结构的设计。这种结构的优点是折叠比大，并且具有高刚性的可靠的新型驱动/锁定系统。主要的新颖之处在于新的平面可展开结构，其基本模块由三个正方形单元组成。在方形单元的相对两侧，驱动/锁定系统中的扭力弹簧为展开提供了驱动力。每个平面可展开结构中有三种类型的驱动/锁定系统和两种类型的杆，它们可以从初始折叠状态开始在水平和垂直方向上展开。在厚度方向上 在可部署（具有驱动/锁定系统）和不可部署（没有驱动/锁定系统）方案之间存在一个选择。我们描述了驱动/锁定系统的设计细节和工作原理。然后模拟基本模块的部署。考虑到未来重型发射器的承载能力，设计并分析了一个大型可部署子阵列，该子阵列由重复模块组成，全长为50 m，宽度为7 m。此外，子阵列的初始折叠大小仅为4.8 m×4.8 m。最后，我们提出了一个SSPS模型，该模型具有一个200 m口径的天线，该天线由多个子阵列和两个600 m长度的太阳能电池阵列组成。对此SSPS模型的动态分析表明，这种基本的可展开结构的刚度可以满足超大型SSPS性能的要求。